TY  - JOUR
AU  - Stojiljković, Nenad
AU  - Radojković, Dragan
AU  - Luković, Zoran
AU  - Gogić, Marija
AU  - Radović, Čedomir
AU  - Popovac, Mladen
AU  - Škorput, Dubravko
PY  - 2022
UR  - https://www.mdpi.com/2076-2615/12/19/2688
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6201
AB  - This study investigated the influence of the degree of connectedness on the reliability of the estimated breeding values (EBVs). The focal trait in the study was the number of piglets born alive (NBA) from sows of the highly prolific Large White and Landrace sows. An analysis included total of 58,043 farrowing’s during the 2008–2020 period. BLUP procedure was used to estimate the breeding values for NBA for the three herds separately and after merging all three herds into one herd. The model for EBV estimation included the following fixed factors: parity, genotype, seasons, litter sire, herds, sow age at farrowing, weaning-conception interval, length of previous lactation, and the following random effects: common litter environment, permanent litter environment, and direct additive genetic effect of animal. Heritability values for NBA ranged from 0.048 to 0.097, depending on the data included in the analysis. The connectedness between herds was analysed using the connectedness rating (CR) and the gene flow (GF) methods. CR among the observed herds ranged from 0.245 to 0.994%, depending on the data included. The exchange of genetic material between all three herds was determined using GF method. The high degree of connectedness determined by the CR and GF method had a strong effect on EBV reliability. The average EBV reliability ranged from 0.520 to 0.867, depending on the data included. The increase in average reliability was observed in both cases when the data were added, both in the analysis of average reliability for purebred animals and when crossbreeds were added, where an increase in this value was also observed. The increase in average EBV reliability is a consequence of the greater amount of information included in the joint evaluation. In conclusion, we believe that our research will improve EBV reliability and help in further selection work in the Republic of Serbia.
T2  - Animals
T2  - Animals
T1  - Case Study on Increasing Breeding Value Estimation Reliability of Reproductive Traits in Serbian Highly Prolific Large White and Landrace Sows
IS  - 19
SP  - 2688
VL  - 12
DO  - 10.3390/ani12192688
ER  - 

@article{
author = "Stojiljković, Nenad and Radojković, Dragan and Luković, Zoran and Gogić, Marija and Radović, Čedomir and Popovac, Mladen and Škorput, Dubravko",
year = "2022",
abstract = "This study investigated the influence of the degree of connectedness on the reliability of the estimated breeding values (EBVs). The focal trait in the study was the number of piglets born alive (NBA) from sows of the highly prolific Large White and Landrace sows. An analysis included total of 58,043 farrowing’s during the 2008–2020 period. BLUP procedure was used to estimate the breeding values for NBA for the three herds separately and after merging all three herds into one herd. The model for EBV estimation included the following fixed factors: parity, genotype, seasons, litter sire, herds, sow age at farrowing, weaning-conception interval, length of previous lactation, and the following random effects: common litter environment, permanent litter environment, and direct additive genetic effect of animal. Heritability values for NBA ranged from 0.048 to 0.097, depending on the data included in the analysis. The connectedness between herds was analysed using the connectedness rating (CR) and the gene flow (GF) methods. CR among the observed herds ranged from 0.245 to 0.994%, depending on the data included. The exchange of genetic material between all three herds was determined using GF method. The high degree of connectedness determined by the CR and GF method had a strong effect on EBV reliability. The average EBV reliability ranged from 0.520 to 0.867, depending on the data included. The increase in average reliability was observed in both cases when the data were added, both in the analysis of average reliability for purebred animals and when crossbreeds were added, where an increase in this value was also observed. The increase in average EBV reliability is a consequence of the greater amount of information included in the joint evaluation. In conclusion, we believe that our research will improve EBV reliability and help in further selection work in the Republic of Serbia.",
journal = "Animals, Animals",
title = "Case Study on Increasing Breeding Value Estimation Reliability of Reproductive Traits in Serbian Highly Prolific Large White and Landrace Sows",
number = "19",
pages = "2688",
volume = "12",
doi = "10.3390/ani12192688"
}

Stojiljković, N., Radojković, D., Luković, Z., Gogić, M., Radović, Č., Popovac, M.,& Škorput, D.. (2022). Case Study on Increasing Breeding Value Estimation Reliability of Reproductive Traits in Serbian Highly Prolific Large White and Landrace Sows. in Animals, 12(19), 2688.
https://doi.org/10.3390/ani12192688

Stojiljković N, Radojković D, Luković Z, Gogić M, Radović Č, Popovac M, Škorput D. Case Study on Increasing Breeding Value Estimation Reliability of Reproductive Traits in Serbian Highly Prolific Large White and Landrace Sows. in Animals. 2022;12(19):2688.
doi:10.3390/ani12192688 .

Stojiljković, Nenad, Radojković, Dragan, Luković, Zoran, Gogić, Marija, Radović, Čedomir, Popovac, Mladen, Škorput, Dubravko, "Case Study on Increasing Breeding Value Estimation Reliability of Reproductive Traits in Serbian Highly Prolific Large White and Landrace Sows" in Animals, 12, no. 19 (2022):2688,
https://doi.org/10.3390/ani12192688 . .

TY  - JOUR
AU  - Popovac, Mladen
AU  - Miletić, Aleksandar
AU  - Raguz, Nikola
AU  - Beskorovajni, Radmila
AU  - Stanojević, Dragan
AU  - Radivojević, Mihailo
AU  - Micić, Nenad
AU  - Durić, Nenad
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5269
AB  - The objective of this paper was to study variability, heritability and correlation of the three production traits in 1409 first-calf heifers of Holstein-Friesian breed; including the determination of the quantity of milk during lactation (ML), the quantity of milk fat during lactation (MM) and the quantity of protein during lactation (PR). According to the obtained results it could be concluded that there were statistically significant differences (P lt 0.01, P lt 0.05, P lt 0.001) between ML, MM and PR regarding the effect of season of the first calving and the length of the first lactation. In addition, there were also significant differences (P lt 0.01, P lt 0.001) between ML and PR with respect to the effect of farm on which animals were raised, while on MM variability the year and age at first calving had a significant effect (P lt 0.05). A share of Holstein genes and the ration which animals were fed had no effect (P>0.05) on variability of any of the examined traits, while the farm on which animals were raised had no effect (P>0.05) on MM, and year and age at first calving did not demonstrate (P>0.05) statistically significant effect on ML and PR. By applying the animal model, based on the use of kinship matrix which involved 3867 animals, by help of REML methodology following heritability coefficients were evaluated: ML h(2) = 0.25; MM h(2) = 0.40; PR h(2) = 037. Coefficients determined for genetic and phenotypic correlations indicated existence of complete and positive correlations between these traits the interval of values being from r(g )= 0.96 between ML and MM to r(g) = 1.00 between ML and PR.
PB  - Croatian Dairy Union, Zagreb
T2  - Mljekarstvo
T1  - Phenotypic and genetic parameters of milk yield traits in first-calf heifers of Holstein-Friesian breed
EP  - 102
IS  - 2
SP  - 93
VL  - 70
DO  - 10.15567/mljekarstvo.2020.0203
ER  - 

@article{
author = "Popovac, Mladen and Miletić, Aleksandar and Raguz, Nikola and Beskorovajni, Radmila and Stanojević, Dragan and Radivojević, Mihailo and Micić, Nenad and Durić, Nenad",
year = "2020",
abstract = "The objective of this paper was to study variability, heritability and correlation of the three production traits in 1409 first-calf heifers of Holstein-Friesian breed; including the determination of the quantity of milk during lactation (ML), the quantity of milk fat during lactation (MM) and the quantity of protein during lactation (PR). According to the obtained results it could be concluded that there were statistically significant differences (P lt 0.01, P lt 0.05, P lt 0.001) between ML, MM and PR regarding the effect of season of the first calving and the length of the first lactation. In addition, there were also significant differences (P lt 0.01, P lt 0.001) between ML and PR with respect to the effect of farm on which animals were raised, while on MM variability the year and age at first calving had a significant effect (P lt 0.05). A share of Holstein genes and the ration which animals were fed had no effect (P>0.05) on variability of any of the examined traits, while the farm on which animals were raised had no effect (P>0.05) on MM, and year and age at first calving did not demonstrate (P>0.05) statistically significant effect on ML and PR. By applying the animal model, based on the use of kinship matrix which involved 3867 animals, by help of REML methodology following heritability coefficients were evaluated: ML h(2) = 0.25; MM h(2) = 0.40; PR h(2) = 037. Coefficients determined for genetic and phenotypic correlations indicated existence of complete and positive correlations between these traits the interval of values being from r(g )= 0.96 between ML and MM to r(g) = 1.00 between ML and PR.",
publisher = "Croatian Dairy Union, Zagreb",
journal = "Mljekarstvo",
title = "Phenotypic and genetic parameters of milk yield traits in first-calf heifers of Holstein-Friesian breed",
pages = "102-93",
number = "2",
volume = "70",
doi = "10.15567/mljekarstvo.2020.0203"
}

Popovac, M., Miletić, A., Raguz, N., Beskorovajni, R., Stanojević, D., Radivojević, M., Micić, N.,& Durić, N.. (2020). Phenotypic and genetic parameters of milk yield traits in first-calf heifers of Holstein-Friesian breed. in Mljekarstvo
Croatian Dairy Union, Zagreb., 70(2), 93-102.
https://doi.org/10.15567/mljekarstvo.2020.0203

Popovac M, Miletić A, Raguz N, Beskorovajni R, Stanojević D, Radivojević M, Micić N, Durić N. Phenotypic and genetic parameters of milk yield traits in first-calf heifers of Holstein-Friesian breed. in Mljekarstvo. 2020;70(2):93-102.
doi:10.15567/mljekarstvo.2020.0203 .

Popovac, Mladen, Miletić, Aleksandar, Raguz, Nikola, Beskorovajni, Radmila, Stanojević, Dragan, Radivojević, Mihailo, Micić, Nenad, Durić, Nenad, "Phenotypic and genetic parameters of milk yield traits in first-calf heifers of Holstein-Friesian breed" in Mljekarstvo, 70, no. 2 (2020):93-102,
https://doi.org/10.15567/mljekarstvo.2020.0203 . .

TY  - JOUR
AU  - Stanojević, Dragan
AU  - Djedović, Radica
AU  - Bogdanović, Vladan
AU  - Raguz, Nikola
AU  - Kučević, Denis
AU  - Popovac, Mladen
AU  - Stojić, Petar
AU  - Samolovac, Ljiljana
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4691
AB  - This research was conducted with the aim of estimating genetic trend for a functional length of productive life (FLPL) in the population of Black and White cattle in Serbia. Research and bulls genetic evaluation for functional longevity were performed on a set of data provided by Agricultural Corporation Belgrade AD (PKB) which contained data on longevity and origin of 22109 cows out of which 26% records were right-censored. Functional length of productive life (FPLP) represents a time period from the first calving to culling or censoring corrected for milk production. Breeding values were estimated using Weibull method of proportional risks within survival analysis a genetic trend for FLPL was calculated using of a regression analysis. The cows included in the analysis were on average first calved in the age of 809 days and had an average share of 81.9% genes of Holstein Friesian breed. An average length of productive life was 1267 days (41.6 months). Distribution of bull standardised breeding values did not statistically significantly differ from normal distribution. An average standardised breeding value was 99. A slightly positive genetic trend was determined, that is, the length of functional productive life was by selection increased by 0.021 day at an annual level while a reliability of estimated breeding values showed a negative trend.
PB  - Društvo genetičara Srbije, Beograd
T2  - Genetika
T1  - Genetic trend of functional productive life in the population of black and white cattle in Serbia
EP  - 862
IS  - 3
SP  - 855
VL  - 50
DO  - 10.2298/GENSR1803855S
ER  - 

@article{
author = "Stanojević, Dragan and Djedović, Radica and Bogdanović, Vladan and Raguz, Nikola and Kučević, Denis and Popovac, Mladen and Stojić, Petar and Samolovac, Ljiljana",
year = "2018",
abstract = "This research was conducted with the aim of estimating genetic trend for a functional length of productive life (FLPL) in the population of Black and White cattle in Serbia. Research and bulls genetic evaluation for functional longevity were performed on a set of data provided by Agricultural Corporation Belgrade AD (PKB) which contained data on longevity and origin of 22109 cows out of which 26% records were right-censored. Functional length of productive life (FPLP) represents a time period from the first calving to culling or censoring corrected for milk production. Breeding values were estimated using Weibull method of proportional risks within survival analysis a genetic trend for FLPL was calculated using of a regression analysis. The cows included in the analysis were on average first calved in the age of 809 days and had an average share of 81.9% genes of Holstein Friesian breed. An average length of productive life was 1267 days (41.6 months). Distribution of bull standardised breeding values did not statistically significantly differ from normal distribution. An average standardised breeding value was 99. A slightly positive genetic trend was determined, that is, the length of functional productive life was by selection increased by 0.021 day at an annual level while a reliability of estimated breeding values showed a negative trend.",
publisher = "Društvo genetičara Srbije, Beograd",
journal = "Genetika",
title = "Genetic trend of functional productive life in the population of black and white cattle in Serbia",
pages = "862-855",
number = "3",
volume = "50",
doi = "10.2298/GENSR1803855S"
}

Stanojević, D., Djedović, R., Bogdanović, V., Raguz, N., Kučević, D., Popovac, M., Stojić, P.,& Samolovac, L.. (2018). Genetic trend of functional productive life in the population of black and white cattle in Serbia. in Genetika
Društvo genetičara Srbije, Beograd., 50(3), 855-862.
https://doi.org/10.2298/GENSR1803855S

Stanojević D, Djedović R, Bogdanović V, Raguz N, Kučević D, Popovac M, Stojić P, Samolovac L. Genetic trend of functional productive life in the population of black and white cattle in Serbia. in Genetika. 2018;50(3):855-862.
doi:10.2298/GENSR1803855S .

Stanojević, Dragan, Djedović, Radica, Bogdanović, Vladan, Raguz, Nikola, Kučević, Denis, Popovac, Mladen, Stojić, Petar, Samolovac, Ljiljana, "Genetic trend of functional productive life in the population of black and white cattle in Serbia" in Genetika, 50, no. 3 (2018):855-862,
https://doi.org/10.2298/GENSR1803855S . .

TY  - JOUR
AU  - Radojković, Dragan
AU  - Savić, Radomir
AU  - Popovac, Mladen
AU  - Radović, Čedomir
AU  - Gogić, Marija
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4809
AB  - The share of variance components and correlations between the most important sow production traits (namely duration of fattening - DF, backfat thickness - BF and number of liveborn piglets - NBA) included in the pig breeding selection programme of the Republic of Serbia were estimated in this paper. The litter size at repeated farrowings (NBA1,..., NBA6) was treated as a separate trait (the multi-trait model), whereas the litter size at birth was treated as a trait repeated a number of times (the repeatability model)). The estimation of dispersion parameters was performed using the Restricted Maximum Likelihood (REML) method. The heritability of DF accounted for 23.5%, i.e. 23.3% depending on the model used, whereas BF accounted for 40.4% in both cases. The heritability of the litter size in consecutive farrowings (the multi-trait model) were in intervals ranging between 0.104 (NBA1) and 0.136 (NBA5). The heritability of NBA in the repeatability treatment accounted for 0.106, whereas the common litter environment and the permanent sow influence contributed to the total variability with 1.1% and 5.6%, respectively. Genetic correlations between the traits examined were not determined, with the exception of consecutive farrowings in the multi-trait treatment of the litter size. The genetic correlations recorded in this case proved positive and complete, with the exception of the correlation between the first and subsequent farrowings (farrowings 3 to 6) and the correlation between the second and the last farrowings (farrowings 5 and 6), which proved very strong.
PB  - Univerzitet u Novom Sadu - Poljoprivredni fakultet, Novi Sad i Naučni institut za ratarstvo i povrtarstvo, Novi Sad
T2  - Contemporary Agriculture
T1  - The Share of Variance Components and Correlations Between Sow Production Traits in Different Treatments of the Litter Size (The Repeatability and Multi-Trait Models)
EP  - 214
IS  - 3-4
SP  - 207
VL  - 67
DO  - 10.1515/contagri-2018-0030
ER  - 

@article{
author = "Radojković, Dragan and Savić, Radomir and Popovac, Mladen and Radović, Čedomir and Gogić, Marija",
year = "2018",
abstract = "The share of variance components and correlations between the most important sow production traits (namely duration of fattening - DF, backfat thickness - BF and number of liveborn piglets - NBA) included in the pig breeding selection programme of the Republic of Serbia were estimated in this paper. The litter size at repeated farrowings (NBA1,..., NBA6) was treated as a separate trait (the multi-trait model), whereas the litter size at birth was treated as a trait repeated a number of times (the repeatability model)). The estimation of dispersion parameters was performed using the Restricted Maximum Likelihood (REML) method. The heritability of DF accounted for 23.5%, i.e. 23.3% depending on the model used, whereas BF accounted for 40.4% in both cases. The heritability of the litter size in consecutive farrowings (the multi-trait model) were in intervals ranging between 0.104 (NBA1) and 0.136 (NBA5). The heritability of NBA in the repeatability treatment accounted for 0.106, whereas the common litter environment and the permanent sow influence contributed to the total variability with 1.1% and 5.6%, respectively. Genetic correlations between the traits examined were not determined, with the exception of consecutive farrowings in the multi-trait treatment of the litter size. The genetic correlations recorded in this case proved positive and complete, with the exception of the correlation between the first and subsequent farrowings (farrowings 3 to 6) and the correlation between the second and the last farrowings (farrowings 5 and 6), which proved very strong.",
publisher = "Univerzitet u Novom Sadu - Poljoprivredni fakultet, Novi Sad i Naučni institut za ratarstvo i povrtarstvo, Novi Sad",
journal = "Contemporary Agriculture",
title = "The Share of Variance Components and Correlations Between Sow Production Traits in Different Treatments of the Litter Size (The Repeatability and Multi-Trait Models)",
pages = "214-207",
number = "3-4",
volume = "67",
doi = "10.1515/contagri-2018-0030"
}

Radojković, D., Savić, R., Popovac, M., Radović, Č.,& Gogić, M.. (2018). The Share of Variance Components and Correlations Between Sow Production Traits in Different Treatments of the Litter Size (The Repeatability and Multi-Trait Models). in Contemporary Agriculture
Univerzitet u Novom Sadu - Poljoprivredni fakultet, Novi Sad i Naučni institut za ratarstvo i povrtarstvo, Novi Sad., 67(3-4), 207-214.
https://doi.org/10.1515/contagri-2018-0030

Radojković D, Savić R, Popovac M, Radović Č, Gogić M. The Share of Variance Components and Correlations Between Sow Production Traits in Different Treatments of the Litter Size (The Repeatability and Multi-Trait Models). in Contemporary Agriculture. 2018;67(3-4):207-214.
doi:10.1515/contagri-2018-0030 .

Radojković, Dragan, Savić, Radomir, Popovac, Mladen, Radović, Čedomir, Gogić, Marija, "The Share of Variance Components and Correlations Between Sow Production Traits in Different Treatments of the Litter Size (The Repeatability and Multi-Trait Models)" in Contemporary Agriculture, 67, no. 3-4 (2018):207-214,
https://doi.org/10.1515/contagri-2018-0030 . .

TY  - JOUR
AU  - Miletić, Aleksandar
AU  - Stojanović, Bojan
AU  - Grubić, Goran
AU  - Stojić, Petar
AU  - Radivojević, Mihailo
AU  - Joksimović-Todorović, Mirjana
AU  - Popovac, Mladen
AU  - Obradović, Saša
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4370
AB  - The aim of this study was to investigate the effects of the use of soybean molasses in the nutrition of lactating cows on their performance and some blood and rumen content parameters. Treatments included isoenergetic and isoprotein rations: total mixed ration (TMR) which included 1 kg of soybean molasses and TMR without soybean molasses. The use of soybean molasses in TMR for lactating cows increased yield of 4 % FCM (5.03 %). There was no difference in milk fat content and yield between treatments. The use of soybean molasses increased the concentration (3.45 vs 3.32 %) and yield (from 0.81 to 0.88 kg/day) of milk protein. Improved utilization of consumed ration dry matter (DM), energy and crude protein by 4.60, 4.81 and 7.82 %, respectively, was confirmed. There was no significant effect of including soybean molasses in TMR on ruminal pH value, number and structure of protozoa population nor on their motility. Soybean molasses had a positive effect on decrease of the urea blood concentration (5.45 vs 6.30 mmol/L) while no significant effects were observed for the concentrations of glucose, Ca and P in blood. Results of this study indicate that soybean molasses, as a source of readily available energy, can be used successfully in rations for lactating cows.
PB  - Croatian Dairy Union, Zagreb
T2  - Mljekarstvo
T1  - The soybean molasses in diets for dairy cows
EP  - 225
IS  - 3
SP  - 217
VL  - 67
DO  - 10.15567/mljekarstvo.2017.0306
ER  - 

@article{
author = "Miletić, Aleksandar and Stojanović, Bojan and Grubić, Goran and Stojić, Petar and Radivojević, Mihailo and Joksimović-Todorović, Mirjana and Popovac, Mladen and Obradović, Saša",
year = "2017",
abstract = "The aim of this study was to investigate the effects of the use of soybean molasses in the nutrition of lactating cows on their performance and some blood and rumen content parameters. Treatments included isoenergetic and isoprotein rations: total mixed ration (TMR) which included 1 kg of soybean molasses and TMR without soybean molasses. The use of soybean molasses in TMR for lactating cows increased yield of 4 % FCM (5.03 %). There was no difference in milk fat content and yield between treatments. The use of soybean molasses increased the concentration (3.45 vs 3.32 %) and yield (from 0.81 to 0.88 kg/day) of milk protein. Improved utilization of consumed ration dry matter (DM), energy and crude protein by 4.60, 4.81 and 7.82 %, respectively, was confirmed. There was no significant effect of including soybean molasses in TMR on ruminal pH value, number and structure of protozoa population nor on their motility. Soybean molasses had a positive effect on decrease of the urea blood concentration (5.45 vs 6.30 mmol/L) while no significant effects were observed for the concentrations of glucose, Ca and P in blood. Results of this study indicate that soybean molasses, as a source of readily available energy, can be used successfully in rations for lactating cows.",
publisher = "Croatian Dairy Union, Zagreb",
journal = "Mljekarstvo",
title = "The soybean molasses in diets for dairy cows",
pages = "225-217",
number = "3",
volume = "67",
doi = "10.15567/mljekarstvo.2017.0306"
}

Miletić, A., Stojanović, B., Grubić, G., Stojić, P., Radivojević, M., Joksimović-Todorović, M., Popovac, M.,& Obradović, S.. (2017). The soybean molasses in diets for dairy cows. in Mljekarstvo
Croatian Dairy Union, Zagreb., 67(3), 217-225.
https://doi.org/10.15567/mljekarstvo.2017.0306

Miletić A, Stojanović B, Grubić G, Stojić P, Radivojević M, Joksimović-Todorović M, Popovac M, Obradović S. The soybean molasses in diets for dairy cows. in Mljekarstvo. 2017;67(3):217-225.
doi:10.15567/mljekarstvo.2017.0306 .

Miletić, Aleksandar, Stojanović, Bojan, Grubić, Goran, Stojić, Petar, Radivojević, Mihailo, Joksimović-Todorović, Mirjana, Popovac, Mladen, Obradović, Saša, "The soybean molasses in diets for dairy cows" in Mljekarstvo, 67, no. 3 (2017):217-225,
https://doi.org/10.15567/mljekarstvo.2017.0306 . .

TY  - JOUR
AU  - Stanojević, Dragan
AU  - Djedović, Radica
AU  - Bogdanović, Vladan
AU  - Raguz, Nikola
AU  - Popovac, Mladen
AU  - Janković, Dobrila
AU  - Strbac, Ljuba
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4064
AB  - Assessment of the heritability coefficients of longevity traits in the population of Black and White cows was performed on a data set that included production results of 16,539 of black and white culled cows, which reached a total of 50,382 lactations in the period from 1985 to 2012. The cows were grown on 7 farms of the Agricultural Corporation Belgrade and are progeny of 277 bulls. The analysis covered the following traits: length of productive life (LPL), lifetime milk yield (LMY) and number of lactations (NL). Variance components of longevity traits were estimated using a BLUP linear mixed model with animal as a random effect. Cows included in the analysis calved for the first time in the average age of 26.86 months, while the average length of productive life amounted to 1,299.9 days and during that time the animals achieved an average of 3.04 lactations and life time production of 21,016 kg of milk. The values of the heritability coefficients of longevity traits ranged from 0.066; 0.061 and 0.074 regarding the length of productive life, lifetime milk yield and number of lactations respectively.
PB  - Croatian Dairy Union, Zagreb
T2  - Mljekarstvo
T1  - Evaluation of the heritability coefficients of longevity in the population of Black and White cows in Serbia
EP  - 329
IS  - 4
SP  - 322
VL  - 66
DO  - 10.15567/mljekarstvo.2016.0408
ER  - 

@article{
author = "Stanojević, Dragan and Djedović, Radica and Bogdanović, Vladan and Raguz, Nikola and Popovac, Mladen and Janković, Dobrila and Strbac, Ljuba",
year = "2016",
abstract = "Assessment of the heritability coefficients of longevity traits in the population of Black and White cows was performed on a data set that included production results of 16,539 of black and white culled cows, which reached a total of 50,382 lactations in the period from 1985 to 2012. The cows were grown on 7 farms of the Agricultural Corporation Belgrade and are progeny of 277 bulls. The analysis covered the following traits: length of productive life (LPL), lifetime milk yield (LMY) and number of lactations (NL). Variance components of longevity traits were estimated using a BLUP linear mixed model with animal as a random effect. Cows included in the analysis calved for the first time in the average age of 26.86 months, while the average length of productive life amounted to 1,299.9 days and during that time the animals achieved an average of 3.04 lactations and life time production of 21,016 kg of milk. The values of the heritability coefficients of longevity traits ranged from 0.066; 0.061 and 0.074 regarding the length of productive life, lifetime milk yield and number of lactations respectively.",
publisher = "Croatian Dairy Union, Zagreb",
journal = "Mljekarstvo",
title = "Evaluation of the heritability coefficients of longevity in the population of Black and White cows in Serbia",
pages = "329-322",
number = "4",
volume = "66",
doi = "10.15567/mljekarstvo.2016.0408"
}

Stanojević, D., Djedović, R., Bogdanović, V., Raguz, N., Popovac, M., Janković, D.,& Strbac, L.. (2016). Evaluation of the heritability coefficients of longevity in the population of Black and White cows in Serbia. in Mljekarstvo
Croatian Dairy Union, Zagreb., 66(4), 322-329.
https://doi.org/10.15567/mljekarstvo.2016.0408

Stanojević D, Djedović R, Bogdanović V, Raguz N, Popovac M, Janković D, Strbac L. Evaluation of the heritability coefficients of longevity in the population of Black and White cows in Serbia. in Mljekarstvo. 2016;66(4):322-329.
doi:10.15567/mljekarstvo.2016.0408 .

Stanojević, Dragan, Djedović, Radica, Bogdanović, Vladan, Raguz, Nikola, Popovac, Mladen, Janković, Dobrila, Strbac, Ljuba, "Evaluation of the heritability coefficients of longevity in the population of Black and White cows in Serbia" in Mljekarstvo, 66, no. 4 (2016):322-329,
https://doi.org/10.15567/mljekarstvo.2016.0408 . .

TY  - THES
AU  - Popovac, Mladen
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/48
AB  - The trial was conducted on one of the pig farms in the Republic of Serbia and included production results of 4768 breeding females (gilts and sows) of the Swedish Landrace breed and their F1 generation crossbreds with Great Yorkshire breed. The trial included four groups of traits such as follows: the traits of weight gain and quality of gilt carcass and the traits of the size of litter and longevity of sows. In total following nine traits were analysed: gilts lifetime daily weight gain (ŽDP), gilts age at the end of test (UKT), average thickness of bacon in gilts (DS), depth of MLD in gilts (DM), percentage of meat in gilt carcass (PM), number of live-born piglets in sow litter (BŽP), length of sow productive life (DPŽ), total number of sows farrowing (UBP) and total number of live-born piglets per sow (UBŽP). Following average values of studied traits were determined: ŽDP 525,51 g/day; UKT 189,53 day; DS 14,50 mm; DM 47,43 mm; PM 56,44 %; BŽP 10,31; DPŽ 739,92 day; UBP 5,14 and UBŽP 52,85. In the analysis of systematic part of model which involved all studied traits we have used the Least Square Method while longevity traits, besides aforementioned methodological procedure, were analysed also by means of the survival analysis method (Weibull model) in order to determine statistical significance and level of risk for these traits manifestation per studied variability factors. ŽDP, UKT, DS, DM and PM statistically significantly varied under the influence of season of the end of performance test, as well as under the influence of gilt genotype with the exception of DM where statistical significance of the effect of this factor was not determined. Regression influence of finishing body mass in test was significant in all traits in which it was included in the model (ŽDP, DS, DM, PM). BŽP statistically significantly varied under the impact of all studied fixed and regression factors (order of farrowing, season of successful conception, sow genotype, sire of the litter, class of duration of previous period weaning - conception, age of sow at farrowing, length of previous lactation). DPŽ, UBP and UBŽP statistically significantly varied under the influence of sow genotype, season of the first successful conception, number of live-born piglets in the first litter, age at the mass of 100 kg, average thickness of bacon at the mass of 100 kg and age of sow at the first farrowing...
AB  - Istraživanje je sprovedeno na jednoj farmi svinja u Republici Srbiji i obuhvatilo je proizvodne rezultate 4768 plotkinja (nazimica ili krmača) rase švedski landras i njihovih meleza F1 generacije sa rasom veliki jorkšir. Ispitivanjem je bilo obuhvaćeno četri grupe osobina i to: osobine porasta i kvaliteta trupa nazimica i osobine veličine legla i dugovečnosti krmača. Ukupno je analizirano devet osobina: životni dnevni prirast nazimica (ŽDP), uzrast na kraju testa nazimica (UKT), prosečna debljina slanine nazimica (DS), dubina MLD – a nazimica (DM), procenat mesa u trupu nazimica (PM), broj živorođene prasadi u leglu krmača (BŽP), dužina produktivnog života krmača (DPŽ), ukupan broj prašenja krmača (UBP) i ukupan broj živorođene prasadi krmača (UBŽP). Utvrđene su sledeće prosešne vrednosti ispitivanih osobina: ŽDP 525,51 g/dan; UKT 189,53 dan; DS 14,50 mm; DM 47,43 mm; PM 56,44 %; BŽP 10,31; DPŽ 739,92 dan; UBP 5,14 i UBŽP 52,85. U analizi sistematskog dela modela svih ispitivanih osobina korišćene je metod najmanjih kvadrata, dok je kod osobina dugovečnosti pored navedenog metodološkog postupka korišćen i metod analize preživljvanja (Vejbulov model - Weibull model) kako bi se utvrdila statistička značajnost i nivo rizika za ispoljenost ovih osobina po ispitivanim faktorima varijabilnosti. ŽDP, UKT, DS, DM i PM su statistički značajno varilali pod uticajem sezone kraja performans tetsta, kao i pod uticajem genotipa nazimice, sa izuzetkom DM gde nije ustanovljena statistička značajnost delovanja ovog faktora. Regresijski uticaj završne telesne mase u testu bio je značajan kod svih osobina kod kojih je bio uključen u model (ŽDP, DS, DM, PM). BŽP je statistički značajno varirao pod uticajem svih ispitivanih fiksnih i regresijskih faktora (redosled prašenja, sezona uspešne oplodnje, genotip krmače, otac legla, klasa trajanja prethodnog perioda zalučenje - oplodnja, starost krmače unutar prašenja, trajanje prethodne laktacije). DPŽ, UBP i UBŽP su statistički značajno varirali pod uticajem genotipa krmače, sezone prve uspešne oplodnje, broja živorođene prasadi u prvom legu, uzrasta pri masi od 100 kg, prosečne debljine slanine pri masi od 100 kg i starosti krmače pri prvom prašenju...
PB  - Univerzitet u Beogradu, Poljoprivredni fakultet
T1  - Phenotypic and genetic variability of sows productive and longevity traits
T1  - Fenotipska i genetska varijabilnost proizvodnih i osobina dugovečnosti krmača
UR  - https://hdl.handle.net/21.15107/rcub_nardus_8011
ER  - 

@phdthesis{
author = "Popovac, Mladen",
year = "2016",
abstract = "The trial was conducted on one of the pig farms in the Republic of Serbia and included production results of 4768 breeding females (gilts and sows) of the Swedish Landrace breed and their F1 generation crossbreds with Great Yorkshire breed. The trial included four groups of traits such as follows: the traits of weight gain and quality of gilt carcass and the traits of the size of litter and longevity of sows. In total following nine traits were analysed: gilts lifetime daily weight gain (ŽDP), gilts age at the end of test (UKT), average thickness of bacon in gilts (DS), depth of MLD in gilts (DM), percentage of meat in gilt carcass (PM), number of live-born piglets in sow litter (BŽP), length of sow productive life (DPŽ), total number of sows farrowing (UBP) and total number of live-born piglets per sow (UBŽP). Following average values of studied traits were determined: ŽDP 525,51 g/day; UKT 189,53 day; DS 14,50 mm; DM 47,43 mm; PM 56,44 %; BŽP 10,31; DPŽ 739,92 day; UBP 5,14 and UBŽP 52,85. In the analysis of systematic part of model which involved all studied traits we have used the Least Square Method while longevity traits, besides aforementioned methodological procedure, were analysed also by means of the survival analysis method (Weibull model) in order to determine statistical significance and level of risk for these traits manifestation per studied variability factors. ŽDP, UKT, DS, DM and PM statistically significantly varied under the influence of season of the end of performance test, as well as under the influence of gilt genotype with the exception of DM where statistical significance of the effect of this factor was not determined. Regression influence of finishing body mass in test was significant in all traits in which it was included in the model (ŽDP, DS, DM, PM). BŽP statistically significantly varied under the impact of all studied fixed and regression factors (order of farrowing, season of successful conception, sow genotype, sire of the litter, class of duration of previous period weaning - conception, age of sow at farrowing, length of previous lactation). DPŽ, UBP and UBŽP statistically significantly varied under the influence of sow genotype, season of the first successful conception, number of live-born piglets in the first litter, age at the mass of 100 kg, average thickness of bacon at the mass of 100 kg and age of sow at the first farrowing..., Istraživanje je sprovedeno na jednoj farmi svinja u Republici Srbiji i obuhvatilo je proizvodne rezultate 4768 plotkinja (nazimica ili krmača) rase švedski landras i njihovih meleza F1 generacije sa rasom veliki jorkšir. Ispitivanjem je bilo obuhvaćeno četri grupe osobina i to: osobine porasta i kvaliteta trupa nazimica i osobine veličine legla i dugovečnosti krmača. Ukupno je analizirano devet osobina: životni dnevni prirast nazimica (ŽDP), uzrast na kraju testa nazimica (UKT), prosečna debljina slanine nazimica (DS), dubina MLD – a nazimica (DM), procenat mesa u trupu nazimica (PM), broj živorođene prasadi u leglu krmača (BŽP), dužina produktivnog života krmača (DPŽ), ukupan broj prašenja krmača (UBP) i ukupan broj živorođene prasadi krmača (UBŽP). Utvrđene su sledeće prosešne vrednosti ispitivanih osobina: ŽDP 525,51 g/dan; UKT 189,53 dan; DS 14,50 mm; DM 47,43 mm; PM 56,44 %; BŽP 10,31; DPŽ 739,92 dan; UBP 5,14 i UBŽP 52,85. U analizi sistematskog dela modela svih ispitivanih osobina korišćene je metod najmanjih kvadrata, dok je kod osobina dugovečnosti pored navedenog metodološkog postupka korišćen i metod analize preživljvanja (Vejbulov model - Weibull model) kako bi se utvrdila statistička značajnost i nivo rizika za ispoljenost ovih osobina po ispitivanim faktorima varijabilnosti. ŽDP, UKT, DS, DM i PM su statistički značajno varilali pod uticajem sezone kraja performans tetsta, kao i pod uticajem genotipa nazimice, sa izuzetkom DM gde nije ustanovljena statistička značajnost delovanja ovog faktora. Regresijski uticaj završne telesne mase u testu bio je značajan kod svih osobina kod kojih je bio uključen u model (ŽDP, DS, DM, PM). BŽP je statistički značajno varirao pod uticajem svih ispitivanih fiksnih i regresijskih faktora (redosled prašenja, sezona uspešne oplodnje, genotip krmače, otac legla, klasa trajanja prethodnog perioda zalučenje - oplodnja, starost krmače unutar prašenja, trajanje prethodne laktacije). DPŽ, UBP i UBŽP su statistički značajno varirali pod uticajem genotipa krmače, sezone prve uspešne oplodnje, broja živorođene prasadi u prvom legu, uzrasta pri masi od 100 kg, prosečne debljine slanine pri masi od 100 kg i starosti krmače pri prvom prašenju...",
publisher = "Univerzitet u Beogradu, Poljoprivredni fakultet",
title = "Phenotypic and genetic variability of sows productive and longevity traits, Fenotipska i genetska varijabilnost proizvodnih i osobina dugovečnosti krmača",
url = "https://hdl.handle.net/21.15107/rcub_nardus_8011"
}

Popovac, M.. (2016). Phenotypic and genetic variability of sows productive and longevity traits. 
Univerzitet u Beogradu, Poljoprivredni fakultet..
https://hdl.handle.net/21.15107/rcub_nardus_8011

Popovac M. Phenotypic and genetic variability of sows productive and longevity traits. 2016;.
https://hdl.handle.net/21.15107/rcub_nardus_8011 .

Popovac, Mladen, "Phenotypic and genetic variability of sows productive and longevity traits" (2016),
https://hdl.handle.net/21.15107/rcub_nardus_8011 .

TY  - JOUR
AU  - Perišić, Predrag
AU  - Bogdanović, Vladan
AU  - Mekić, Cvijan
AU  - Ružić-Muslić, Dragana
AU  - Stanojević, Dragan
AU  - Popovac, Mladen
AU  - Stepić, Stefan
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3867
AB  - This research paper gives an analysis on the size of world's domestic buffalo populations, their milk production and the size of buffalo population in Serbia. Population of domestic buffalo in the world is constantly increasing so that in 2013 there were 199 783 549 individuals, out of which in India in the same year they raised 57.77% of buffalo world population, in Pakistan 18.87%, and in China 11.64%. The share of total world production of buffalo milk in total world milk production in 2012 was 12.92 % or 97 417 135 t out of which 67.76% was produced in India. In Serbia buffalo is raised in the regions of Raška (about 1000 individuals) and Kosovo. Populations of buffalo in central Serbia show a tendency of decreasing in size what was the reason to start a programme of in situ conservation 10 years ago. On the sample of buffalo population encompassed by the programme of conservation the body measures were analysed indicating that the population of buffalo is quite unequalised and that average values obtained for exterior measures are similar to the results obtained by the authors of earlier period for the population of buffalo in the area of former Yugoslavia.
AB  - U radu je analizirano brojno stanje domaćih bivola u svetu, proizvodnja mleka bivola, kao i stanje populacije bivola u Srbiji. Populacija domaćih bivola u svetu stalno raste i 2013. godine bilo je 199.783.549 grla, a od tog broja u Indiji je u 2013. godini gajeno 57,77% svetske populacije bivola, u Pakistanu 18,87%, a u Kini 11,64%. Učešće ukupne svetske proizvodnje bivoljeg mleka u ukupnoj svetskoj proizvodnji mleka 2012. godine bilo je 12,92 % ili 97.417.135 t, a od toga je 67,76% proizvedeno u Indiji. U Srbiji bivoli se gaje u području Raške oblasti (oko 1000 bivola) i na području Kosova. Populacija bivola u centralnoj Srbiji ima tendenciju smanjenja veličine, zbog čega je pre 10 godina počeo da se sprovodi program konzervacije. Na uzorku populacije (37 bivolica) obuhvaćene programom in situ konzervacije utvrđene su prosečne vrednosti za telesne mere. Visina grebena bivolica u populaciji koja je merena bila je 125,97 cm, visina krsta 126,98cm, dužina trupa 142,19cm, dubina grudi 68,75 cm, širina grudi 44,48cm, a obim grudi 184,25 cm. Populacija bivolica je bila dosta neujednačena što ukazuje na odsustvo odgajivačko-selekcijskog rada kod bivola u Srbiji u prethodnim decenijama.
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - The importance of buffalo in milk production and buffalo population in Serbia
T1  - Značaj bivola u proizvodnji mleka i stanje populacije u Srbiji
EP  - 263
IS  - 2
SP  - 255
VL  - 31
DO  - 10.2298/BAH1502255P
ER  - 

@article{
author = "Perišić, Predrag and Bogdanović, Vladan and Mekić, Cvijan and Ružić-Muslić, Dragana and Stanojević, Dragan and Popovac, Mladen and Stepić, Stefan",
year = "2015",
abstract = "This research paper gives an analysis on the size of world's domestic buffalo populations, their milk production and the size of buffalo population in Serbia. Population of domestic buffalo in the world is constantly increasing so that in 2013 there were 199 783 549 individuals, out of which in India in the same year they raised 57.77% of buffalo world population, in Pakistan 18.87%, and in China 11.64%. The share of total world production of buffalo milk in total world milk production in 2012 was 12.92 % or 97 417 135 t out of which 67.76% was produced in India. In Serbia buffalo is raised in the regions of Raška (about 1000 individuals) and Kosovo. Populations of buffalo in central Serbia show a tendency of decreasing in size what was the reason to start a programme of in situ conservation 10 years ago. On the sample of buffalo population encompassed by the programme of conservation the body measures were analysed indicating that the population of buffalo is quite unequalised and that average values obtained for exterior measures are similar to the results obtained by the authors of earlier period for the population of buffalo in the area of former Yugoslavia., U radu je analizirano brojno stanje domaćih bivola u svetu, proizvodnja mleka bivola, kao i stanje populacije bivola u Srbiji. Populacija domaćih bivola u svetu stalno raste i 2013. godine bilo je 199.783.549 grla, a od tog broja u Indiji je u 2013. godini gajeno 57,77% svetske populacije bivola, u Pakistanu 18,87%, a u Kini 11,64%. Učešće ukupne svetske proizvodnje bivoljeg mleka u ukupnoj svetskoj proizvodnji mleka 2012. godine bilo je 12,92 % ili 97.417.135 t, a od toga je 67,76% proizvedeno u Indiji. U Srbiji bivoli se gaje u području Raške oblasti (oko 1000 bivola) i na području Kosova. Populacija bivola u centralnoj Srbiji ima tendenciju smanjenja veličine, zbog čega je pre 10 godina počeo da se sprovodi program konzervacije. Na uzorku populacije (37 bivolica) obuhvaćene programom in situ konzervacije utvrđene su prosečne vrednosti za telesne mere. Visina grebena bivolica u populaciji koja je merena bila je 125,97 cm, visina krsta 126,98cm, dužina trupa 142,19cm, dubina grudi 68,75 cm, širina grudi 44,48cm, a obim grudi 184,25 cm. Populacija bivolica je bila dosta neujednačena što ukazuje na odsustvo odgajivačko-selekcijskog rada kod bivola u Srbiji u prethodnim decenijama.",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "The importance of buffalo in milk production and buffalo population in Serbia, Značaj bivola u proizvodnji mleka i stanje populacije u Srbiji",
pages = "263-255",
number = "2",
volume = "31",
doi = "10.2298/BAH1502255P"
}

Perišić, P., Bogdanović, V., Mekić, C., Ružić-Muslić, D., Stanojević, D., Popovac, M.,& Stepić, S.. (2015). The importance of buffalo in milk production and buffalo population in Serbia. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 31(2), 255-263.
https://doi.org/10.2298/BAH1502255P

Perišić P, Bogdanović V, Mekić C, Ružić-Muslić D, Stanojević D, Popovac M, Stepić S. The importance of buffalo in milk production and buffalo population in Serbia. in Biotechnology in Animal Husbandry. 2015;31(2):255-263.
doi:10.2298/BAH1502255P .

Perišić, Predrag, Bogdanović, Vladan, Mekić, Cvijan, Ružić-Muslić, Dragana, Stanojević, Dragan, Popovac, Mladen, Stepić, Stefan, "The importance of buffalo in milk production and buffalo population in Serbia" in Biotechnology in Animal Husbandry, 31, no. 2 (2015):255-263,
https://doi.org/10.2298/BAH1502255P . .

TY  - JOUR
AU  - Stanojević, Dragan
AU  - Djedović, Radica
AU  - Bogdanović, Vladan
AU  - Popovac, Mladen
AU  - Perišić, Predrag
AU  - Beskorovajni, Radmila
AU  - Lazarević, M.
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3900
AB  - The conducted research was aimed at constructing equations of selection index that would be used in the selection of the Holstein-Friesian breed animals in Serbia. The construction of the selection index includes the most important milk traits observed in standard lactation: milk yield (MY305), milk fat content (% MF305) and protein content (% MP305). The variance and covariance necessary for the construction of selection index are calculated using the mixed model by the method of least squares. The economic value of traits is expressed as a ratio of relative changes in costs per unit of traits included in the selection index. Livestock included in the research produced, in the first standard lactation, an average of 7681 kg of milk with 3.58% milk fat and 3.28% protein. The equation of the selection index presented in the paper is selected from the group of equations of selection index, as an equation with the highest correlation between the equation and the aggregate genotype, which amounted to 0.2156.
AB  - Sprovedeno istraživanje imalo je za cilj konstruisanje jednačine selekcijskog indeksa koja bi se koristila u odabiru grla holštajn-frizijske rase u Srbiji. U konstrukciju selekcijskog indeksa uključene su najvažnije osobine mlečnosti posmatrane u standardnoj laktaciji: prinos mleka (PM305), sadržaj mlečne masti (%MM305) i sadržaj proteina (%MP305). Varijanse i kovarijanse neophodne za konstrukciju selekcijskog indeksa izračunate su primenom mešovitog modela metodom najmanjih kvadrata. Ekonomska vrednost osobina je izražena kao odnos relativne promene troškova po jedinici osobina uključenih u selekcijski indeks. Grla obuhvaćena istraživanjem prosečno su proizvela u prvoj standardnoj laktaciji 7681 kg mleka sa 3,58 % mlečne masti i 3,28% proteina. Jednačina selekcijskog indeksa prikazana u radu odabrana je iz grupe jednačina selekcijskog indeksa, kao jednačina sa najvećom korelacijom između jednačine i agregatnog genotipa, koja je iznosila 0,2156. .
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - The potentials of using selection index in the assessment of breeding values of Holstein breeds in Serbia
T1  - Mogućnosti upotrebe selekcijskog indeksa u proceni priplodne vrednosti krava Holštajn rase u Srbiji
EP  - 532
IS  - 4
SP  - 523
VL  - 31
DO  - 10.2298/bah1504523S
ER  - 

@article{
author = "Stanojević, Dragan and Djedović, Radica and Bogdanović, Vladan and Popovac, Mladen and Perišić, Predrag and Beskorovajni, Radmila and Lazarević, M.",
year = "2015",
abstract = "The conducted research was aimed at constructing equations of selection index that would be used in the selection of the Holstein-Friesian breed animals in Serbia. The construction of the selection index includes the most important milk traits observed in standard lactation: milk yield (MY305), milk fat content (% MF305) and protein content (% MP305). The variance and covariance necessary for the construction of selection index are calculated using the mixed model by the method of least squares. The economic value of traits is expressed as a ratio of relative changes in costs per unit of traits included in the selection index. Livestock included in the research produced, in the first standard lactation, an average of 7681 kg of milk with 3.58% milk fat and 3.28% protein. The equation of the selection index presented in the paper is selected from the group of equations of selection index, as an equation with the highest correlation between the equation and the aggregate genotype, which amounted to 0.2156., Sprovedeno istraživanje imalo je za cilj konstruisanje jednačine selekcijskog indeksa koja bi se koristila u odabiru grla holštajn-frizijske rase u Srbiji. U konstrukciju selekcijskog indeksa uključene su najvažnije osobine mlečnosti posmatrane u standardnoj laktaciji: prinos mleka (PM305), sadržaj mlečne masti (%MM305) i sadržaj proteina (%MP305). Varijanse i kovarijanse neophodne za konstrukciju selekcijskog indeksa izračunate su primenom mešovitog modela metodom najmanjih kvadrata. Ekonomska vrednost osobina je izražena kao odnos relativne promene troškova po jedinici osobina uključenih u selekcijski indeks. Grla obuhvaćena istraživanjem prosečno su proizvela u prvoj standardnoj laktaciji 7681 kg mleka sa 3,58 % mlečne masti i 3,28% proteina. Jednačina selekcijskog indeksa prikazana u radu odabrana je iz grupe jednačina selekcijskog indeksa, kao jednačina sa najvećom korelacijom između jednačine i agregatnog genotipa, koja je iznosila 0,2156. .",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "The potentials of using selection index in the assessment of breeding values of Holstein breeds in Serbia, Mogućnosti upotrebe selekcijskog indeksa u proceni priplodne vrednosti krava Holštajn rase u Srbiji",
pages = "532-523",
number = "4",
volume = "31",
doi = "10.2298/bah1504523S"
}

Stanojević, D., Djedović, R., Bogdanović, V., Popovac, M., Perišić, P., Beskorovajni, R.,& Lazarević, M.. (2015). The potentials of using selection index in the assessment of breeding values of Holstein breeds in Serbia. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 31(4), 523-532.
https://doi.org/10.2298/bah1504523S

Stanojević D, Djedović R, Bogdanović V, Popovac M, Perišić P, Beskorovajni R, Lazarević M. The potentials of using selection index in the assessment of breeding values of Holstein breeds in Serbia. in Biotechnology in Animal Husbandry. 2015;31(4):523-532.
doi:10.2298/bah1504523S .

Stanojević, Dragan, Djedović, Radica, Bogdanović, Vladan, Popovac, Mladen, Perišić, Predrag, Beskorovajni, Radmila, Lazarević, M., "The potentials of using selection index in the assessment of breeding values of Holstein breeds in Serbia" in Biotechnology in Animal Husbandry, 31, no. 4 (2015):523-532,
https://doi.org/10.2298/bah1504523S . .

TY  - JOUR
AU  - Stanojević, Dragan
AU  - Djedović, Radica
AU  - Bogdanović, Vladan
AU  - Popovac, Mladen
AU  - Perišić, Predrag
AU  - Beskorovajni, Radmila
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3946
AB  - The objective of this study was a construction of selection index on the basis of whose score the cows could be graded during their selection and formation of parent pairs. The most important milk yield traits in standard lactation: milk yield (PM305), milk fat content (%MM305) and protein content (%MP305) were included in the construction of selection index. Variances and covariances deemed necessary for construction of selection index were calculated by use of the mixed model of the Least Squares method. Economic value of the traits was expressed as a relationship of relative cost changes per unit of the traits included in the selection index. The individuals included in the trial on average produced 8261 kg milk with 294.14 kg milk fat and 270.07 kg protein in standard lactation. Equation of selection index used in this study was chosen from a set of selection index equations, as an equation having the highest correlation between the equation and aggregate genotype which amounted to 0.4275.
AB  - Cilj istraživanja bila je konstrukcija selekcijskog indeksa, na osnovu čijeg skora bi se mogle rangirati krave prilikom njihovog odabira i formiranja roditeljskih parova. U konstrukciju selekcijskog indeksa uključene su najvažnije osobine mlečnosti posmatrane u standardnoj laktaciji: prinos mleka (PM305), sadržaj mlečne masti (%MM305) i sadržaj proteina (%MP305). Varijanse i kovarijanse neophodne za konstrukciju selekcijskog indeksa izračunate su primenom mešovitog modela metodom najmanjih kvadrata. Ekonomska vrednost osobina je izražena kao odnos relativne promene troškova po jedinici osobina uključenih u selekcijski indeks. Grla obuhvaćena istraživanjem prosečno su proizvela u standardnoj laktaciji 8261 kg mleka sa 294,14 kg mlečne masti i 270,07 kg proteina. Jednačina selekcijskog indeksa prikazana u radu odabrana je iz grupe jednacina selekcijskog indeksa, kao jednacina sa najvećom korelacijom između jednačine i agregatnog genotipa, koja je iznosila 0,4275.
PB  - Institut PKB Agroekonomik, Padinska skela
T2  - Zbornik naučnih radova Instituta PKB Agroekonomik
T1  - The assessment of breeding value in black and white cattle by use of selection index
T1  - Procena priplodne vrednosti krava crno-bele rase upotrebom selekcijskog indeksa
EP  - 45
IS  - 3-4
SP  - 39
VL  - 21
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3946
ER  - 

@article{
author = "Stanojević, Dragan and Djedović, Radica and Bogdanović, Vladan and Popovac, Mladen and Perišić, Predrag and Beskorovajni, Radmila",
year = "2015",
abstract = "The objective of this study was a construction of selection index on the basis of whose score the cows could be graded during their selection and formation of parent pairs. The most important milk yield traits in standard lactation: milk yield (PM305), milk fat content (%MM305) and protein content (%MP305) were included in the construction of selection index. Variances and covariances deemed necessary for construction of selection index were calculated by use of the mixed model of the Least Squares method. Economic value of the traits was expressed as a relationship of relative cost changes per unit of the traits included in the selection index. The individuals included in the trial on average produced 8261 kg milk with 294.14 kg milk fat and 270.07 kg protein in standard lactation. Equation of selection index used in this study was chosen from a set of selection index equations, as an equation having the highest correlation between the equation and aggregate genotype which amounted to 0.4275., Cilj istraživanja bila je konstrukcija selekcijskog indeksa, na osnovu čijeg skora bi se mogle rangirati krave prilikom njihovog odabira i formiranja roditeljskih parova. U konstrukciju selekcijskog indeksa uključene su najvažnije osobine mlečnosti posmatrane u standardnoj laktaciji: prinos mleka (PM305), sadržaj mlečne masti (%MM305) i sadržaj proteina (%MP305). Varijanse i kovarijanse neophodne za konstrukciju selekcijskog indeksa izračunate su primenom mešovitog modela metodom najmanjih kvadrata. Ekonomska vrednost osobina je izražena kao odnos relativne promene troškova po jedinici osobina uključenih u selekcijski indeks. Grla obuhvaćena istraživanjem prosečno su proizvela u standardnoj laktaciji 8261 kg mleka sa 294,14 kg mlečne masti i 270,07 kg proteina. Jednačina selekcijskog indeksa prikazana u radu odabrana je iz grupe jednacina selekcijskog indeksa, kao jednacina sa najvećom korelacijom između jednačine i agregatnog genotipa, koja je iznosila 0,4275.",
publisher = "Institut PKB Agroekonomik, Padinska skela",
journal = "Zbornik naučnih radova Instituta PKB Agroekonomik",
title = "The assessment of breeding value in black and white cattle by use of selection index, Procena priplodne vrednosti krava crno-bele rase upotrebom selekcijskog indeksa",
pages = "45-39",
number = "3-4",
volume = "21",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3946"
}

Stanojević, D., Djedović, R., Bogdanović, V., Popovac, M., Perišić, P.,& Beskorovajni, R.. (2015). The assessment of breeding value in black and white cattle by use of selection index. in Zbornik naučnih radova Instituta PKB Agroekonomik
Institut PKB Agroekonomik, Padinska skela., 21(3-4), 39-45.
https://hdl.handle.net/21.15107/rcub_agrospace_3946

Stanojević D, Djedović R, Bogdanović V, Popovac M, Perišić P, Beskorovajni R. The assessment of breeding value in black and white cattle by use of selection index. in Zbornik naučnih radova Instituta PKB Agroekonomik. 2015;21(3-4):39-45.
https://hdl.handle.net/21.15107/rcub_agrospace_3946 .

Stanojević, Dragan, Djedović, Radica, Bogdanović, Vladan, Popovac, Mladen, Perišić, Predrag, Beskorovajni, Radmila, "The assessment of breeding value in black and white cattle by use of selection index" in Zbornik naučnih radova Instituta PKB Agroekonomik, 21, no. 3-4 (2015):39-45,
https://hdl.handle.net/21.15107/rcub_agrospace_3946 .

TY  - JOUR
AU  - Savić, Radomir
AU  - Petrović, M.
AU  - Radojković, Dragan
AU  - Radović, Čedomir
AU  - Parunović, Nenad
AU  - Popovac, Mladen
AU  - Gogić, Marija
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3870
AB  - The main objective of this study was to assess the variability of ejaculate properties: volume of ejaculate (VOL, ml), sperm concentration (CON, spermatozoa/ml), total sperm count (NT) and the number of doses produced (NPD) per ejaculate under the influence of season, boar and the interval between two mounts. Reproductive efficiency of boars was analysed based on the farrowing rate (FR). The study included 341 ejaculates from seven Large White boars. Impact assessment was carried out by applying the GLM procedure of the statistical package SAS 9.1.3. The average values of VOL, CON, NT, NPD and FR were: 244.28 ml, 203.77x106 spermatozoa/ml, 43.48x109 spermatozoa, 17.39 doses and 67.58%. Ejaculate properties varied under the influence of season (P lt 0.01, P lt 0.001). The interval between two mounts did not affect only the variability of CON. The difference between the best and worst boars was 91.99x106 spermatozoa/ml of ejaculate (P lt 0.001). During summer VOL ejaculate was the lowest (191.36 ml). The highest NPD (19.04 doses) was produced during the autumn months, and during the same period the highest concentration of sperm was recorded (242.16x106 spermatozoa/ml). Regardless of the differences in the farrowing rate between boars not being statistically significant (P=0.0882), it is necessary to perform the ranking and promptly identify boars with farrowing rate below average.
AB  - Osnovni cilj istraživanja bio je da se oceni varijabilnost osobina ejakulata: volumen ejakulata(VOL, ml), koncentracija sperme (CON, spermatozoida/ml), ukupan broj spermatozoida (NT) i broj proizvedenih doza (NPD) po ejakulatu pod uticajem nerasta, sezone i intervala izmedju dva skoka. Reproduktivna efikasnost nerasta analizirana je na osnovu procenta prašenja (FR). Istraživanjem je bio obuhvaćen 341 ejakulat sedam nerasta velikog jorkšira. Ocena uticaja je izvršena primenom GLM procedure u statističkom paketu SAS 9.1.3. Prosečne vrednosti VOL, CON, NT, NPD i FR bile su: 244,28 ml, 203,77x106 spermatozoida/ml, 43,48x109 spermatozoida, 17,39 doza i 67,58%. Osobine ejakulata varirale su pod uticajem sezone (P lt 0,01; P lt 0,001). Interval između dva skoka nije uticao jedino na varijabilnost CON. Razlika izmedju najboljeg i najlošijeg nerasta bila je 91,99x106 spermatozoida/ml ejakulata (P lt 0,001). Tokom letnjih meseci VOL ejakulata bio je najmanji (191,36 ml). Najveći NPD (19,04 doza) proizveden je tokom jesenjih meseci, a tokom istog perioda bila je i najveća koncentracija sperme (242,16x106 spermatozoida/ml). Bez obzira što razlike u procentu prašenja između nerasta nisu bile statistički značajne (P=0,0882), potrebno je vršiti rangiranje i pravovremeno identifikovati neraste sa procentom prašenja ispod proseka.
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - Ejaculate properties and reproductive efficiency of large White boars during exploitation
T1  - Osobine ejakulata i reproduktivna efikasnost nerasta velikog jorkšira tokom iskorišćavanja
EP  - 405
IS  - 3
SP  - 397
VL  - 31
DO  - 10.2298/BAH1503397S
ER  - 

@article{
author = "Savić, Radomir and Petrović, M. and Radojković, Dragan and Radović, Čedomir and Parunović, Nenad and Popovac, Mladen and Gogić, Marija",
year = "2015",
abstract = "The main objective of this study was to assess the variability of ejaculate properties: volume of ejaculate (VOL, ml), sperm concentration (CON, spermatozoa/ml), total sperm count (NT) and the number of doses produced (NPD) per ejaculate under the influence of season, boar and the interval between two mounts. Reproductive efficiency of boars was analysed based on the farrowing rate (FR). The study included 341 ejaculates from seven Large White boars. Impact assessment was carried out by applying the GLM procedure of the statistical package SAS 9.1.3. The average values of VOL, CON, NT, NPD and FR were: 244.28 ml, 203.77x106 spermatozoa/ml, 43.48x109 spermatozoa, 17.39 doses and 67.58%. Ejaculate properties varied under the influence of season (P lt 0.01, P lt 0.001). The interval between two mounts did not affect only the variability of CON. The difference between the best and worst boars was 91.99x106 spermatozoa/ml of ejaculate (P lt 0.001). During summer VOL ejaculate was the lowest (191.36 ml). The highest NPD (19.04 doses) was produced during the autumn months, and during the same period the highest concentration of sperm was recorded (242.16x106 spermatozoa/ml). Regardless of the differences in the farrowing rate between boars not being statistically significant (P=0.0882), it is necessary to perform the ranking and promptly identify boars with farrowing rate below average., Osnovni cilj istraživanja bio je da se oceni varijabilnost osobina ejakulata: volumen ejakulata(VOL, ml), koncentracija sperme (CON, spermatozoida/ml), ukupan broj spermatozoida (NT) i broj proizvedenih doza (NPD) po ejakulatu pod uticajem nerasta, sezone i intervala izmedju dva skoka. Reproduktivna efikasnost nerasta analizirana je na osnovu procenta prašenja (FR). Istraživanjem je bio obuhvaćen 341 ejakulat sedam nerasta velikog jorkšira. Ocena uticaja je izvršena primenom GLM procedure u statističkom paketu SAS 9.1.3. Prosečne vrednosti VOL, CON, NT, NPD i FR bile su: 244,28 ml, 203,77x106 spermatozoida/ml, 43,48x109 spermatozoida, 17,39 doza i 67,58%. Osobine ejakulata varirale su pod uticajem sezone (P lt 0,01; P lt 0,001). Interval između dva skoka nije uticao jedino na varijabilnost CON. Razlika izmedju najboljeg i najlošijeg nerasta bila je 91,99x106 spermatozoida/ml ejakulata (P lt 0,001). Tokom letnjih meseci VOL ejakulata bio je najmanji (191,36 ml). Najveći NPD (19,04 doza) proizveden je tokom jesenjih meseci, a tokom istog perioda bila je i najveća koncentracija sperme (242,16x106 spermatozoida/ml). Bez obzira što razlike u procentu prašenja između nerasta nisu bile statistički značajne (P=0,0882), potrebno je vršiti rangiranje i pravovremeno identifikovati neraste sa procentom prašenja ispod proseka.",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "Ejaculate properties and reproductive efficiency of large White boars during exploitation, Osobine ejakulata i reproduktivna efikasnost nerasta velikog jorkšira tokom iskorišćavanja",
pages = "405-397",
number = "3",
volume = "31",
doi = "10.2298/BAH1503397S"
}

Savić, R., Petrović, M., Radojković, D., Radović, Č., Parunović, N., Popovac, M.,& Gogić, M.. (2015). Ejaculate properties and reproductive efficiency of large White boars during exploitation. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 31(3), 397-405.
https://doi.org/10.2298/BAH1503397S

Savić R, Petrović M, Radojković D, Radović Č, Parunović N, Popovac M, Gogić M. Ejaculate properties and reproductive efficiency of large White boars during exploitation. in Biotechnology in Animal Husbandry. 2015;31(3):397-405.
doi:10.2298/BAH1503397S .

Savić, Radomir, Petrović, M., Radojković, Dragan, Radović, Čedomir, Parunović, Nenad, Popovac, Mladen, Gogić, Marija, "Ejaculate properties and reproductive efficiency of large White boars during exploitation" in Biotechnology in Animal Husbandry, 31, no. 3 (2015):397-405,
https://doi.org/10.2298/BAH1503397S . .

TY  - CONF
AU  - Popovac, M.
AU  - Radojković, D.
AU  - Petrović, M.
AU  - Gogić, M.
AU  - Savić, R.
AU  - Stanojević, D.
AU  - Miletić, A.
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5540
AB  - The goal of this research paper was to assess the breeding value of first farrowed Swedish Landrace sows by the means of selection indices method. The traits on the basis of which the breeding value of animals was assessed are following: daily  liveweight gain, average thickness of collected back fat measured at five sites and number of liveborn piglets in the first litter. The liveweight gain and carcass quality traits determined at the end of performance test were corrected for the body mass of 100kg by the method of basic indexes and following mean values were determined: for corrected daily liveweight gain (KZDP) 499.92g/day and for corrected average collected backfat thickness (KSL) 20.01mm. The first farrowed sows on average produced 8.09 liveborn piglets in the litter. Studying the effect of the gilts` birth year and season on KZDP and KSL it was determined that the gilts` birth year and season had no statistically significant influence (P>0.05) on KZDP variation but they had a statistically significant effect on KSL (P lt 0.01). The year and the season of farrowing and the class of backfat thickness in performance test did not display any statistically significant effect (P>0.05) on BZPL, while the KZDP class and the age at first farrowing had a statistically significant effect on the variability of these trait (P lt 0.05; P lt 0.01). All studied traits varied statistically significantly (P lt 0.01) under the impact of the gilts` sire or dam. Heritability coefficients were: h2= 0.402 for KZDP, h2= 0.261 for KSL and h2= 0.177 for BZPL. The relation between KZDP and KSL was of a medium strength both at phenotype and genetic levels (rph=0.491; rg=0.411), while the relation of these traits with BZPL did not exist, except for the genetic relationship between KSL and KZDP which was of a medium strength (rg=0.252). Three equations for the selection indexes were constructed among which as the most optimal was chosen the one which includes all three traits (KZDP, KSL and BZPL) and whose correlation coefficent of selection index and aggregate  genotype was rIAG = 0.5473.
C3  - International Symposium on Animal Science 2014, 23-25th September 2014, Belgrade, Serbia
T1  - The Assessment of Breeding Value of First Farrowed Sows by the Method of Selection Indices
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_5540
ER  - 

@conference{
author = "Popovac, M. and Radojković, D. and Petrović, M. and Gogić, M. and Savić, R. and Stanojević, D. and Miletić, A.",
year = "2014",
abstract = "The goal of this research paper was to assess the breeding value of first farrowed Swedish Landrace sows by the means of selection indices method. The traits on the basis of which the breeding value of animals was assessed are following: daily  liveweight gain, average thickness of collected back fat measured at five sites and number of liveborn piglets in the first litter. The liveweight gain and carcass quality traits determined at the end of performance test were corrected for the body mass of 100kg by the method of basic indexes and following mean values were determined: for corrected daily liveweight gain (KZDP) 499.92g/day and for corrected average collected backfat thickness (KSL) 20.01mm. The first farrowed sows on average produced 8.09 liveborn piglets in the litter. Studying the effect of the gilts` birth year and season on KZDP and KSL it was determined that the gilts` birth year and season had no statistically significant influence (P>0.05) on KZDP variation but they had a statistically significant effect on KSL (P lt 0.01). The year and the season of farrowing and the class of backfat thickness in performance test did not display any statistically significant effect (P>0.05) on BZPL, while the KZDP class and the age at first farrowing had a statistically significant effect on the variability of these trait (P lt 0.05; P lt 0.01). All studied traits varied statistically significantly (P lt 0.01) under the impact of the gilts` sire or dam. Heritability coefficients were: h2= 0.402 for KZDP, h2= 0.261 for KSL and h2= 0.177 for BZPL. The relation between KZDP and KSL was of a medium strength both at phenotype and genetic levels (rph=0.491; rg=0.411), while the relation of these traits with BZPL did not exist, except for the genetic relationship between KSL and KZDP which was of a medium strength (rg=0.252). Three equations for the selection indexes were constructed among which as the most optimal was chosen the one which includes all three traits (KZDP, KSL and BZPL) and whose correlation coefficent of selection index and aggregate  genotype was rIAG = 0.5473.",
journal = "International Symposium on Animal Science 2014, 23-25th September 2014, Belgrade, Serbia",
title = "The Assessment of Breeding Value of First Farrowed Sows by the Method of Selection Indices",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_5540"
}

Popovac, M., Radojković, D., Petrović, M., Gogić, M., Savić, R., Stanojević, D.,& Miletić, A.. (2014). The Assessment of Breeding Value of First Farrowed Sows by the Method of Selection Indices. in International Symposium on Animal Science 2014, 23-25th September 2014, Belgrade, Serbia.
https://hdl.handle.net/21.15107/rcub_agrospace_5540

Popovac M, Radojković D, Petrović M, Gogić M, Savić R, Stanojević D, Miletić A. The Assessment of Breeding Value of First Farrowed Sows by the Method of Selection Indices. in International Symposium on Animal Science 2014, 23-25th September 2014, Belgrade, Serbia. 2014;.
https://hdl.handle.net/21.15107/rcub_agrospace_5540 .

Popovac, M., Radojković, D., Petrović, M., Gogić, M., Savić, R., Stanojević, D., Miletić, A., "The Assessment of Breeding Value of First Farrowed Sows by the Method of Selection Indices" in International Symposium on Animal Science 2014, 23-25th September 2014, Belgrade, Serbia (2014),
https://hdl.handle.net/21.15107/rcub_agrospace_5540 .

TY  - JOUR
AU  - Stanojević, Dragan
AU  - Djedović, Radica
AU  - Bogdanović, Vladan
AU  - Perišić, Predrag
AU  - Beskorovajni, Radmila
AU  - Popovac, Mladen
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3666
AB  - Well planned breeding program refers to achieving the advancement through selection of milking cattle. One of the most significant parameters of achieved results was the selection effect. The aim of this research was to show potential selection results which can be achieved in optimized breeding conditions for domestic population of milking cattle. Potential effects for the most important milk yield traits were estimated in standard lactation: milk yield, milk fat content and milk fat yield. Values of parameters that were used during the estimation were taken based on data from literature that engages in this type of research. Estimated selection effects in simulation I for milk yield, milk fat content and milk fat yield were 134,84 kg; 0,0258% i 4,95 kg. In second simulation estimated selection effect for same traits was: 217,55 kg; 0,029% i 7,87 kg. Results of conducted simulation point out at significant potential, meaning that in future period in order to put that potential to realization certain conditions have to be created by selective breeding work.
AB  - Dobro osmišljen odgajivački program ima za cilj postizanje selekcijskog napretka u populacijama mlečnih goveda. Jedan od najznačajnijih pokazatelja rezulata postignutih na ovaj način jeste efekat selekcije. Cilj rada bio je da prikaže potencijalne rezulate selekcije koji se mogu postići u domaćoj populaciji mlečnih goveda u optimizovanim uslovima odgajivanja. Procenjeni su potencijalni efekti za najvažnije osobine mlečnosti u standardnoj laktaciji: prinos mleka, sadržaj mlečne masti i prinos mlečne masti. Vrednosti parametara korišćenih prilikom procene uzeti su na osnovu podataka iz literature koja se bavi ovom problematikom. Procenjeni efekti selekcije u simulaciji I za osobine prinos mleka, sadržaj mlečne masti i prinos mlečne masti iznosili su 134,84 kg; 0,0258% i 4,95 kg. U smulaciji II procenjeni efekat selekcije za iste osobine bio je: 217,55 kg; 0,029% i 7,87 kg. Rezultati urađene simulacije ukazuju na značajan potencijal, te u narednom periodu trebalo bi odgajivačkim radom stvoriti uslove kako bi se značajan deo tog potencijala i realizovao.
PB  - Institut PKB Agroekonomik, Padinska skela
T2  - Zbornik naučnih radova Instituta PKB Agroekonomik
T1  - Estimation of the sellection effects on milk yield traits of black and white cattle in optimized breeding conditions
T1  - Procena efekata selekcije za osobine mlečnosti u optimizovanim uslovima odgajivanja u populaciji crno-belih goveda
EP  - 163
IS  - 1-4
SP  - 157
VL  - 20
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3666
ER  - 

@article{
author = "Stanojević, Dragan and Djedović, Radica and Bogdanović, Vladan and Perišić, Predrag and Beskorovajni, Radmila and Popovac, Mladen",
year = "2014",
abstract = "Well planned breeding program refers to achieving the advancement through selection of milking cattle. One of the most significant parameters of achieved results was the selection effect. The aim of this research was to show potential selection results which can be achieved in optimized breeding conditions for domestic population of milking cattle. Potential effects for the most important milk yield traits were estimated in standard lactation: milk yield, milk fat content and milk fat yield. Values of parameters that were used during the estimation were taken based on data from literature that engages in this type of research. Estimated selection effects in simulation I for milk yield, milk fat content and milk fat yield were 134,84 kg; 0,0258% i 4,95 kg. In second simulation estimated selection effect for same traits was: 217,55 kg; 0,029% i 7,87 kg. Results of conducted simulation point out at significant potential, meaning that in future period in order to put that potential to realization certain conditions have to be created by selective breeding work., Dobro osmišljen odgajivački program ima za cilj postizanje selekcijskog napretka u populacijama mlečnih goveda. Jedan od najznačajnijih pokazatelja rezulata postignutih na ovaj način jeste efekat selekcije. Cilj rada bio je da prikaže potencijalne rezulate selekcije koji se mogu postići u domaćoj populaciji mlečnih goveda u optimizovanim uslovima odgajivanja. Procenjeni su potencijalni efekti za najvažnije osobine mlečnosti u standardnoj laktaciji: prinos mleka, sadržaj mlečne masti i prinos mlečne masti. Vrednosti parametara korišćenih prilikom procene uzeti su na osnovu podataka iz literature koja se bavi ovom problematikom. Procenjeni efekti selekcije u simulaciji I za osobine prinos mleka, sadržaj mlečne masti i prinos mlečne masti iznosili su 134,84 kg; 0,0258% i 4,95 kg. U smulaciji II procenjeni efekat selekcije za iste osobine bio je: 217,55 kg; 0,029% i 7,87 kg. Rezultati urađene simulacije ukazuju na značajan potencijal, te u narednom periodu trebalo bi odgajivačkim radom stvoriti uslove kako bi se značajan deo tog potencijala i realizovao.",
publisher = "Institut PKB Agroekonomik, Padinska skela",
journal = "Zbornik naučnih radova Instituta PKB Agroekonomik",
title = "Estimation of the sellection effects on milk yield traits of black and white cattle in optimized breeding conditions, Procena efekata selekcije za osobine mlečnosti u optimizovanim uslovima odgajivanja u populaciji crno-belih goveda",
pages = "163-157",
number = "1-4",
volume = "20",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3666"
}

Stanojević, D., Djedović, R., Bogdanović, V., Perišić, P., Beskorovajni, R.,& Popovac, M.. (2014). Estimation of the sellection effects on milk yield traits of black and white cattle in optimized breeding conditions. in Zbornik naučnih radova Instituta PKB Agroekonomik
Institut PKB Agroekonomik, Padinska skela., 20(1-4), 157-163.
https://hdl.handle.net/21.15107/rcub_agrospace_3666

Stanojević D, Djedović R, Bogdanović V, Perišić P, Beskorovajni R, Popovac M. Estimation of the sellection effects on milk yield traits of black and white cattle in optimized breeding conditions. in Zbornik naučnih radova Instituta PKB Agroekonomik. 2014;20(1-4):157-163.
https://hdl.handle.net/21.15107/rcub_agrospace_3666 .

Stanojević, Dragan, Djedović, Radica, Bogdanović, Vladan, Perišić, Predrag, Beskorovajni, Radmila, Popovac, Mladen, "Estimation of the sellection effects on milk yield traits of black and white cattle in optimized breeding conditions" in Zbornik naučnih radova Instituta PKB Agroekonomik, 20, no. 1-4 (2014):157-163,
https://hdl.handle.net/21.15107/rcub_agrospace_3666 .

TY  - JOUR
AU  - Popovac, Mladen
AU  - Radojković, Dragan
AU  - Petrović, Milica D.
AU  - Gogić, Marija
AU  - Stanojević, Dragan
AU  - Stanišić, Nikola
AU  - Miletić, Aleksandar
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3631
AB  - The aim of this study was to evaluate the chemical composition of the back fat tissue of mangalitsa pig and meaty pig breeds and their crosses, and the pigs that were fed with feed that was enriched or unenriched with oil, from the aspect of the production of biodiesel, where the starting material for the fuel would be the fat tissue of pigs. By examining the impact of breed and oil content in feed, it was found that chemical parameters (fat, water, protein, saturated and unsaturated fatty acids) show statistically significant variation under the influence of these factors. The highest fat content (89.39%), which is essential for conversion of fat into biodiesel, was found in back adipose tissue of mangalitsa breed, while the lowest fat content (86.10%) was found in the back fat tissue of meaty breeds and their crosses. Favorable ratio of saturated to unsaturated fatty acids (37.92% : 62.07%), on which some physical properties of the fuel depend, was found in the back fat tissue of pigs that were fed with feed enriched with oil, and the largest proportion of saturated fatty acids, i.e. the most unfavorable fatty acid composition (40.90% : 59.09%) was found in the back fat tissues of pigs that were fed with feed unenriched with oil. The lowest content of saturated fatty acids and water (7.44%), as the key factors that determine the cetane number of the fuel and the fuel production process, indicates that the most suitable raw material for the production of biodiesel is the fat tissue of pigs that were fed with food that contained a certain amount of oil.
AB  - Cilj rada bio je da se ispita hemijski sastav leđnog masnog tkiva svinja rase mangulica i plemenitih mesnatih rasa i njihovih meleza, kao i svinja koje su hranjene hranom obogaćenom ili neobogaćenom uljem, a sve sa aspekta proizvodnje biodizela gde bi polazna sirovina za ovo gorivo bilo masno tkivo svinja. Ispitujući uticaj rase i sadržaja ulja u hrani ustanovljeno je statistički značajno variranje hemijskih karakteristika masnog tkiva svinja (sadržaja masti, vode, proteina, zasićenih i nezasićenih masnih kiselina) pod uticajem ovih faktora. Najveći sadržaj masti (89,39%) koji je ključni faktor konverzije sirovine u biodizel utvrđen je u leđnom masnom tkivu rase mangulica dok je najmanji sadržaj masti (86,10%) utvrđen u leđnoj slanini plemenitih mesnatih rasa i njihovih meleza. Najpovoljniji odnos zasićenih i nezasićenih masnih kiselina (37,92% : 62,07%) koje uslovljavaju neke fizičke osobine goriva utvrđen je u leđnoj slanini grla čija je hrana bila obogaćena uljem, a najveći udeo zasićenih masnih kiselina, odnosno najnepovoljniji masnokiselinski sastav (40,90% : 59,09%) utvrđen je u masnom tkivu grla koja su dobijala hranu siromašnu uljem. Najmanji sadržaj zasićenih masnih kiselina i vode (7,44%) kao ključnih faktora od kojih zavise cetanski broj i proces proizvodnje goriva ukazuje da je najpogodnija sirovina za proizvodnju biodizela masno tkivo grla čija je hrana sadržala određenu količinu ulja.
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd
T2  - Journal of Agricultural Sciences (Belgrade)
T1  - The effects of breed and feeding regime on the chemical composition of pig back fat as a potential raw material for biodiesel production
T1  - Uticaj rase i načina ishrane na hemijski sastav leđnog masnog tkiva svinja kao potencijalne sirovine za biodizel
EP  - 150
IS  - 2
SP  - 141
VL  - 59
DO  - 10.2298/jas1402141p
ER  - 

@article{
author = "Popovac, Mladen and Radojković, Dragan and Petrović, Milica D. and Gogić, Marija and Stanojević, Dragan and Stanišić, Nikola and Miletić, Aleksandar",
year = "2014",
abstract = "The aim of this study was to evaluate the chemical composition of the back fat tissue of mangalitsa pig and meaty pig breeds and their crosses, and the pigs that were fed with feed that was enriched or unenriched with oil, from the aspect of the production of biodiesel, where the starting material for the fuel would be the fat tissue of pigs. By examining the impact of breed and oil content in feed, it was found that chemical parameters (fat, water, protein, saturated and unsaturated fatty acids) show statistically significant variation under the influence of these factors. The highest fat content (89.39%), which is essential for conversion of fat into biodiesel, was found in back adipose tissue of mangalitsa breed, while the lowest fat content (86.10%) was found in the back fat tissue of meaty breeds and their crosses. Favorable ratio of saturated to unsaturated fatty acids (37.92% : 62.07%), on which some physical properties of the fuel depend, was found in the back fat tissue of pigs that were fed with feed enriched with oil, and the largest proportion of saturated fatty acids, i.e. the most unfavorable fatty acid composition (40.90% : 59.09%) was found in the back fat tissues of pigs that were fed with feed unenriched with oil. The lowest content of saturated fatty acids and water (7.44%), as the key factors that determine the cetane number of the fuel and the fuel production process, indicates that the most suitable raw material for the production of biodiesel is the fat tissue of pigs that were fed with food that contained a certain amount of oil., Cilj rada bio je da se ispita hemijski sastav leđnog masnog tkiva svinja rase mangulica i plemenitih mesnatih rasa i njihovih meleza, kao i svinja koje su hranjene hranom obogaćenom ili neobogaćenom uljem, a sve sa aspekta proizvodnje biodizela gde bi polazna sirovina za ovo gorivo bilo masno tkivo svinja. Ispitujući uticaj rase i sadržaja ulja u hrani ustanovljeno je statistički značajno variranje hemijskih karakteristika masnog tkiva svinja (sadržaja masti, vode, proteina, zasićenih i nezasićenih masnih kiselina) pod uticajem ovih faktora. Najveći sadržaj masti (89,39%) koji je ključni faktor konverzije sirovine u biodizel utvrđen je u leđnom masnom tkivu rase mangulica dok je najmanji sadržaj masti (86,10%) utvrđen u leđnoj slanini plemenitih mesnatih rasa i njihovih meleza. Najpovoljniji odnos zasićenih i nezasićenih masnih kiselina (37,92% : 62,07%) koje uslovljavaju neke fizičke osobine goriva utvrđen je u leđnoj slanini grla čija je hrana bila obogaćena uljem, a najveći udeo zasićenih masnih kiselina, odnosno najnepovoljniji masnokiselinski sastav (40,90% : 59,09%) utvrđen je u masnom tkivu grla koja su dobijala hranu siromašnu uljem. Najmanji sadržaj zasićenih masnih kiselina i vode (7,44%) kao ključnih faktora od kojih zavise cetanski broj i proces proizvodnje goriva ukazuje da je najpogodnija sirovina za proizvodnju biodizela masno tkivo grla čija je hrana sadržala određenu količinu ulja.",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd",
journal = "Journal of Agricultural Sciences (Belgrade)",
title = "The effects of breed and feeding regime on the chemical composition of pig back fat as a potential raw material for biodiesel production, Uticaj rase i načina ishrane na hemijski sastav leđnog masnog tkiva svinja kao potencijalne sirovine za biodizel",
pages = "150-141",
number = "2",
volume = "59",
doi = "10.2298/jas1402141p"
}

Popovac, M., Radojković, D., Petrović, M. D., Gogić, M., Stanojević, D., Stanišić, N.,& Miletić, A.. (2014). The effects of breed and feeding regime on the chemical composition of pig back fat as a potential raw material for biodiesel production. in Journal of Agricultural Sciences (Belgrade)
Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd., 59(2), 141-150.
https://doi.org/10.2298/jas1402141p

Popovac M, Radojković D, Petrović MD, Gogić M, Stanojević D, Stanišić N, Miletić A. The effects of breed and feeding regime on the chemical composition of pig back fat as a potential raw material for biodiesel production. in Journal of Agricultural Sciences (Belgrade). 2014;59(2):141-150.
doi:10.2298/jas1402141p .

Popovac, Mladen, Radojković, Dragan, Petrović, Milica D., Gogić, Marija, Stanojević, Dragan, Stanišić, Nikola, Miletić, Aleksandar, "The effects of breed and feeding regime on the chemical composition of pig back fat as a potential raw material for biodiesel production" in Journal of Agricultural Sciences (Belgrade), 59, no. 2 (2014):141-150,
https://doi.org/10.2298/jas1402141p . .

TY  - JOUR
AU  - Popovac, Mladen
AU  - Petrović, Milica
AU  - Radojković, Dragan
AU  - Stanojević, Dragan
AU  - Miletić, Aleksandar
AU  - Perišić, Predrag
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3432
AB  - The objective of this research paper was to make an assessment of breeding value of performance tested gilts of Swedish Landrace and F-1 crossbreds of Swedish Landrace and Great Yorkshire by the method of selection index. The traits on whose basis the breeding value was estimated were: daily liveweight gain, average backfat thickness measured at two sites and carcass meat percentage. These traits were corrected for body mass of 100kg by the method of base indexes and the following average values were determined: corrected daily liveweight gain (KZDP) 408.93g/day, corrected average backfat thickness measured at two sites (KSL) 9.77mm and corrected carcass meat percentage (KPM) 61.08%. Studying the effect of genotype, year and birth season of gilts a statistically significant variation (P>0.05) of these traits provoked by the mentioned factors was not determined while the gilts sire statistically highly significantly (P lt 0.001) influenced all studied traits. Heritability coefficients were: h(2)= 0.255 for KZDP, h(2)= 0.356 for KSL and h(2)= 0.349 for KPM. The four selection index equations were constructed among which as the most optimal was chosen the one which includes all three traits (KZDP, KSL and KPM) and whose coefficient of the correlation of selection index and aggregate genotype was r(IAG) = 0.594.
PB  - Društvo genetičara Srbije, Beograd
T2  - Genetika
T1  - The assessment of genetic potential in performance tested gilts by means of selection indexes method
EP  - 104
IS  - 1
SP  - 95
VL  - 46
DO  - 10.2298/GENSR1401095P
ER  - 

@article{
author = "Popovac, Mladen and Petrović, Milica and Radojković, Dragan and Stanojević, Dragan and Miletić, Aleksandar and Perišić, Predrag",
year = "2014",
abstract = "The objective of this research paper was to make an assessment of breeding value of performance tested gilts of Swedish Landrace and F-1 crossbreds of Swedish Landrace and Great Yorkshire by the method of selection index. The traits on whose basis the breeding value was estimated were: daily liveweight gain, average backfat thickness measured at two sites and carcass meat percentage. These traits were corrected for body mass of 100kg by the method of base indexes and the following average values were determined: corrected daily liveweight gain (KZDP) 408.93g/day, corrected average backfat thickness measured at two sites (KSL) 9.77mm and corrected carcass meat percentage (KPM) 61.08%. Studying the effect of genotype, year and birth season of gilts a statistically significant variation (P>0.05) of these traits provoked by the mentioned factors was not determined while the gilts sire statistically highly significantly (P lt 0.001) influenced all studied traits. Heritability coefficients were: h(2)= 0.255 for KZDP, h(2)= 0.356 for KSL and h(2)= 0.349 for KPM. The four selection index equations were constructed among which as the most optimal was chosen the one which includes all three traits (KZDP, KSL and KPM) and whose coefficient of the correlation of selection index and aggregate genotype was r(IAG) = 0.594.",
publisher = "Društvo genetičara Srbije, Beograd",
journal = "Genetika",
title = "The assessment of genetic potential in performance tested gilts by means of selection indexes method",
pages = "104-95",
number = "1",
volume = "46",
doi = "10.2298/GENSR1401095P"
}

Popovac, M., Petrović, M., Radojković, D., Stanojević, D., Miletić, A.,& Perišić, P.. (2014). The assessment of genetic potential in performance tested gilts by means of selection indexes method. in Genetika
Društvo genetičara Srbije, Beograd., 46(1), 95-104.
https://doi.org/10.2298/GENSR1401095P

Popovac M, Petrović M, Radojković D, Stanojević D, Miletić A, Perišić P. The assessment of genetic potential in performance tested gilts by means of selection indexes method. in Genetika. 2014;46(1):95-104.
doi:10.2298/GENSR1401095P .

Popovac, Mladen, Petrović, Milica, Radojković, Dragan, Stanojević, Dragan, Miletić, Aleksandar, Perišić, Predrag, "The assessment of genetic potential in performance tested gilts by means of selection indexes method" in Genetika, 46, no. 1 (2014):95-104,
https://doi.org/10.2298/GENSR1401095P . .

TY  - CONF
AU  - Radojković, Dragan
AU  - Petrović, M
AU  - Parunović, N
AU  - Radović, C
AU  - Radović, L
AU  - Popovac, Mladen
AU  - Savić, Radomir
AU  - Gogić, M
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5542
AB  - Variance components for sow litter size traits were estimated using the REML method. Number of live born piglets (NBA), number of still born piglets (NSB), number of total born piglets (NTB) and number of weaned piglets (NW) were treated as traits which repeated several times during sow lifetime - repeatability model. Results of the fertility of Swedish Landrace sows realized on three pig farms in the Republic of Serbia were presented in four data sets DS1 (farm 1), DS2 (farm 2), DS3 (farm 3) and DS23 (farms 2 and 3 together). Fixed part of the model for litter size traits at farrowing (NBA, NSB and NTB) included parity, mating season as year-month interaction, litter genotype and weaning to conception interval as class effects. The age at farrowing was modelled as a quadratic regression nested within parity, whereas preceding lactation length was included as linear regression.  In case of NW the model included parity, weaning season as year-month interaction, number of piglets in litter subsequent to crossfostering and litter genotype as class effects. The age at farrowing was included into the model in the same way as in case of previous traits. Random part of the model was the same for all analysed traits and represented as effect of common environment in litter where sows had been born, permanent effect of environment in sows’ litters and direct additive genetic effect. Heritability of NBA varied between 0.050 (DS2) and 0.076 (DS3), NSB between 0.004 (DS3) and 0.027 (DS2), NTB between 0.065 (DS2) and 0.073 (DS3) and of NW between 0.010 (DS2) and 0.028 (DS1). Share of permanent environment of sow in phenotypic variance was higher than share of litter effect and mostly lower than share of direct genetic effect.
C3  - International Symposium on Animal Science 2014, 23-25th September 2014, Belgrade, Serbia
T1  - Estimation of the Variance Components of the Sow Litter Size Traits Using Reml Method - Repeatability Model
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_5542
ER  - 

@conference{
author = "Radojković, Dragan and Petrović, M and Parunović, N and Radović, C and Radović, L and Popovac, Mladen and Savić, Radomir and Gogić, M",
year = "2014",
abstract = "Variance components for sow litter size traits were estimated using the REML method. Number of live born piglets (NBA), number of still born piglets (NSB), number of total born piglets (NTB) and number of weaned piglets (NW) were treated as traits which repeated several times during sow lifetime - repeatability model. Results of the fertility of Swedish Landrace sows realized on three pig farms in the Republic of Serbia were presented in four data sets DS1 (farm 1), DS2 (farm 2), DS3 (farm 3) and DS23 (farms 2 and 3 together). Fixed part of the model for litter size traits at farrowing (NBA, NSB and NTB) included parity, mating season as year-month interaction, litter genotype and weaning to conception interval as class effects. The age at farrowing was modelled as a quadratic regression nested within parity, whereas preceding lactation length was included as linear regression.  In case of NW the model included parity, weaning season as year-month interaction, number of piglets in litter subsequent to crossfostering and litter genotype as class effects. The age at farrowing was included into the model in the same way as in case of previous traits. Random part of the model was the same for all analysed traits and represented as effect of common environment in litter where sows had been born, permanent effect of environment in sows’ litters and direct additive genetic effect. Heritability of NBA varied between 0.050 (DS2) and 0.076 (DS3), NSB between 0.004 (DS3) and 0.027 (DS2), NTB between 0.065 (DS2) and 0.073 (DS3) and of NW between 0.010 (DS2) and 0.028 (DS1). Share of permanent environment of sow in phenotypic variance was higher than share of litter effect and mostly lower than share of direct genetic effect.",
journal = "International Symposium on Animal Science 2014, 23-25th September 2014, Belgrade, Serbia",
title = "Estimation of the Variance Components of the Sow Litter Size Traits Using Reml Method - Repeatability Model",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_5542"
}

Radojković, D., Petrović, M., Parunović, N., Radović, C., Radović, L., Popovac, M., Savić, R.,& Gogić, M.. (2014). Estimation of the Variance Components of the Sow Litter Size Traits Using Reml Method - Repeatability Model. in International Symposium on Animal Science 2014, 23-25th September 2014, Belgrade, Serbia.
https://hdl.handle.net/21.15107/rcub_agrospace_5542

Radojković D, Petrović M, Parunović N, Radović C, Radović L, Popovac M, Savić R, Gogić M. Estimation of the Variance Components of the Sow Litter Size Traits Using Reml Method - Repeatability Model. in International Symposium on Animal Science 2014, 23-25th September 2014, Belgrade, Serbia. 2014;.
https://hdl.handle.net/21.15107/rcub_agrospace_5542 .

Radojković, Dragan, Petrović, M, Parunović, N, Radović, C, Radović, L, Popovac, Mladen, Savić, Radomir, Gogić, M, "Estimation of the Variance Components of the Sow Litter Size Traits Using Reml Method - Repeatability Model" in International Symposium on Animal Science 2014, 23-25th September 2014, Belgrade, Serbia (2014),
https://hdl.handle.net/21.15107/rcub_agrospace_5542 .

TY  - JOUR
AU  - Stanojević, Dragan
AU  - Djedović, Radica
AU  - Bogdanović, Vladan
AU  - Perišić, Predrag
AU  - Beskorovajni, Radmila
AU  - Popovac, Mladen
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3366
AB  - In order to conduct selection on the larger number of traits, that are significant from the economic aspect, it is necessary to know the direction and strength of correlation between observed traits. In this research average values and variability of the most significant milk yield traits as well as coefficients of genetic and phenotype correlations are described. This research was conducted on 1369 cows that had finished their first three lactations in period from 2006 to 2010th year. Cattle were bread at 7 farms of Agricultural Corporation Belgrade and they are descendants of 29 bulls. The following traits were researched: milk yield, milk fat content and milk fat yield. Obtained genetic correlation values in this research were from -0.375 between milk fat content in entire lactation and milk yield in standard lactation, up to 0.998 for milk fat content in entire and standard lactation. Obtained phenotype correlation values were from -0.207 between milk yield in standard lactation and milk fat content in entire lactation up to 0.958 between milk yield and milk fat content in entire lactation.
AB  - U cilju sprovođenja selekcije na veći broj osobina, koje imaju primarni značaj sa ekonomskog aspekta proizvodnje mleka, neophodno je poznavanje smera i jačine povezanosti između osobina. U radu su prikazane prosečne vrednosti i varijabilnost najvažnijih osobina mlečnosti, kao i koeficijenti fenotipskih i genetskih korelacija. Istraživanjem je obuhvaćeno 1369 grla koja su imala zaključene prve tri laktacije u periodu od 2006. do 2010. godine. Grla su gajena na 7 farmi Poljoprivredne korporacije Beograd i potomci su 29 bikova-očeva. Istraživanjem su obuhvaćene sledeće osobine mlečnosti: prinos mleka, sadržaj mlečne masti i prinos mlečne masti. Vrednosti koeficijenata fenotipskih korelacija imali su vrednosti od - 0.207 između prinosa mleka u standardnoj laktaciji i sadržaja mlečne masti u celoj laktaciji, do 0.958 između prinosa mleka i prinosa mlečne masti u celoj laktaciji. Vrednosti genetskih korelacija utvrđeni u istraživanju imali su vrednosti od -0.375 između sadržaja mlečne masti u celoj laktaciji i prinosa mleka u standardnoj laktaciji, do 0.998 za sadržaj mlečne masti u celoj i standardnoj laktaciji.
PB  - Institut PKB Agroekonomik, Padinska skela
T2  - Zbornik naučnih radova Instituta PKB Agroekonomik
T1  - Phenotype and genetic correlation between milk yield traits in first three consecutive lactations of black and white cows
T1  - Fenotipska i genetska povezanost osobina mlečnosti u prve tri uzastopne laktacije crno belih krava
EP  - 24
IS  - 3-4
SP  - 17
VL  - 19
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3366
ER  - 

@article{
author = "Stanojević, Dragan and Djedović, Radica and Bogdanović, Vladan and Perišić, Predrag and Beskorovajni, Radmila and Popovac, Mladen",
year = "2013",
abstract = "In order to conduct selection on the larger number of traits, that are significant from the economic aspect, it is necessary to know the direction and strength of correlation between observed traits. In this research average values and variability of the most significant milk yield traits as well as coefficients of genetic and phenotype correlations are described. This research was conducted on 1369 cows that had finished their first three lactations in period from 2006 to 2010th year. Cattle were bread at 7 farms of Agricultural Corporation Belgrade and they are descendants of 29 bulls. The following traits were researched: milk yield, milk fat content and milk fat yield. Obtained genetic correlation values in this research were from -0.375 between milk fat content in entire lactation and milk yield in standard lactation, up to 0.998 for milk fat content in entire and standard lactation. Obtained phenotype correlation values were from -0.207 between milk yield in standard lactation and milk fat content in entire lactation up to 0.958 between milk yield and milk fat content in entire lactation., U cilju sprovođenja selekcije na veći broj osobina, koje imaju primarni značaj sa ekonomskog aspekta proizvodnje mleka, neophodno je poznavanje smera i jačine povezanosti između osobina. U radu su prikazane prosečne vrednosti i varijabilnost najvažnijih osobina mlečnosti, kao i koeficijenti fenotipskih i genetskih korelacija. Istraživanjem je obuhvaćeno 1369 grla koja su imala zaključene prve tri laktacije u periodu od 2006. do 2010. godine. Grla su gajena na 7 farmi Poljoprivredne korporacije Beograd i potomci su 29 bikova-očeva. Istraživanjem su obuhvaćene sledeće osobine mlečnosti: prinos mleka, sadržaj mlečne masti i prinos mlečne masti. Vrednosti koeficijenata fenotipskih korelacija imali su vrednosti od - 0.207 između prinosa mleka u standardnoj laktaciji i sadržaja mlečne masti u celoj laktaciji, do 0.958 između prinosa mleka i prinosa mlečne masti u celoj laktaciji. Vrednosti genetskih korelacija utvrđeni u istraživanju imali su vrednosti od -0.375 između sadržaja mlečne masti u celoj laktaciji i prinosa mleka u standardnoj laktaciji, do 0.998 za sadržaj mlečne masti u celoj i standardnoj laktaciji.",
publisher = "Institut PKB Agroekonomik, Padinska skela",
journal = "Zbornik naučnih radova Instituta PKB Agroekonomik",
title = "Phenotype and genetic correlation between milk yield traits in first three consecutive lactations of black and white cows, Fenotipska i genetska povezanost osobina mlečnosti u prve tri uzastopne laktacije crno belih krava",
pages = "24-17",
number = "3-4",
volume = "19",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3366"
}

Stanojević, D., Djedović, R., Bogdanović, V., Perišić, P., Beskorovajni, R.,& Popovac, M.. (2013). Phenotype and genetic correlation between milk yield traits in first three consecutive lactations of black and white cows. in Zbornik naučnih radova Instituta PKB Agroekonomik
Institut PKB Agroekonomik, Padinska skela., 19(3-4), 17-24.
https://hdl.handle.net/21.15107/rcub_agrospace_3366

Stanojević D, Djedović R, Bogdanović V, Perišić P, Beskorovajni R, Popovac M. Phenotype and genetic correlation between milk yield traits in first three consecutive lactations of black and white cows. in Zbornik naučnih radova Instituta PKB Agroekonomik. 2013;19(3-4):17-24.
https://hdl.handle.net/21.15107/rcub_agrospace_3366 .

Stanojević, Dragan, Djedović, Radica, Bogdanović, Vladan, Perišić, Predrag, Beskorovajni, Radmila, Popovac, Mladen, "Phenotype and genetic correlation between milk yield traits in first three consecutive lactations of black and white cows" in Zbornik naučnih radova Instituta PKB Agroekonomik, 19, no. 3-4 (2013):17-24,
https://hdl.handle.net/21.15107/rcub_agrospace_3366 .

TY  - JOUR
AU  - Stanojević, Dragan
AU  - Djedović, Radica
AU  - Bogdanović, Vladan
AU  - Popovac, Mladen
AU  - Perišić, Predrag
AU  - Beskorovajni, Radmila
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3074
AB  - Aim of this paper was to assess the values of genetic parameters which have crucial influence on selection effect. Values of phenotype variability as well as coefficient of heritability and correlations between milk yield traits analyzed in this research are shown in this paper. The paper includes 1109 first standard lactations of black and white breed cows, offspring of 9 fathers bred at 7 farms of Agricultural Corporation Belgrade during the year 2008. The paternal influence was researched as well as breeding farm, calving season influence to phenotype expression and variations of milk yield traits in standard lactation. Statistically very significant (p lt 0,01) influence of the bull, farm and calving season on phenotype expressiveness, variability of milk yield, milk fat yield and protein yield in standard lactation was determined. Determined values of heritability for milk yield traits, milk fat contents, protein contents in milk, milk fat yield and milk protein yield were: 0.115, 0.049, 0.017, 0.119. and 0.111, retrospectively. Genetic correlations coefficient values of milk yield traits were from: -0.746 (milk fat yield - protein content) to 0.983 (milk fat yield-protein yield).
AB  - Cilj rada bio je da se procene vrednosti genetskih parametara koji imaju presudan uticaj na efekat selekcije. U radu su prikazane vrednosti fenotipske varijabilnosti kao i koeficijenata naslednosti i povezanosti između osobina mlečnosti analiziranih u ovom istraživanju. U radu je obuhvaćeno 1109 prvih standardnih laktacija, krava crnobele rase, potomaka 9 očeva gajenih na 7 farmi Poljoprivredne korporacije Beograd u toku 2008. godine. U istraživanju je ispitan uticaj oca grla, farme na kojoj je grlo gajeno i sezone teljenja na fenotipsko ispoljavanje i variranje osobina mlečnosti u standardnoj laktaciji. Na fenotipsku ispoljenost i varijabilnost prinosa mleka, prinosa mlečne masti i prinosa proteina u standardnoj laktaciji, visoku statističku značajnost (p lt 0,01) ispoljili su otac grla, farma i sezona teljenja. Utvrđene vrednosti koeficijenata naslednosti za prinos mleka, sadržaj mlečne masti, sadržaj proteina u mleku, prinos mlečne masti, prinos proteina iznosile su: 0.115, 0.049, 0.017, 0.119. i 0.111, retrospektivno. Vrednosti koeficijenata genetskih korelacija osobina mlečnosti iznosile su od: -0.746 (prinos mlečne masti-sadržaj proteina) do 0.983 (prinos mlečne masti-prinos proteina).
PB  - Institut PKB Agroekonomik, Padinska skela
T2  - Zbornik naučnih radova Instituta PKB Agroekonomik
T1  - Phenotype and genotype variability and correlations between milk yield traits of black and white cattle breed primiparous cows
T1  - Fenotipska i genotipska varijabilnost i povezanost osobina mlečnosti prvotelki crno-bele rase
EP  - 22
IS  - 3-4
SP  - 15
VL  - 18
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3074
ER  - 

@article{
author = "Stanojević, Dragan and Djedović, Radica and Bogdanović, Vladan and Popovac, Mladen and Perišić, Predrag and Beskorovajni, Radmila",
year = "2012",
abstract = "Aim of this paper was to assess the values of genetic parameters which have crucial influence on selection effect. Values of phenotype variability as well as coefficient of heritability and correlations between milk yield traits analyzed in this research are shown in this paper. The paper includes 1109 first standard lactations of black and white breed cows, offspring of 9 fathers bred at 7 farms of Agricultural Corporation Belgrade during the year 2008. The paternal influence was researched as well as breeding farm, calving season influence to phenotype expression and variations of milk yield traits in standard lactation. Statistically very significant (p lt 0,01) influence of the bull, farm and calving season on phenotype expressiveness, variability of milk yield, milk fat yield and protein yield in standard lactation was determined. Determined values of heritability for milk yield traits, milk fat contents, protein contents in milk, milk fat yield and milk protein yield were: 0.115, 0.049, 0.017, 0.119. and 0.111, retrospectively. Genetic correlations coefficient values of milk yield traits were from: -0.746 (milk fat yield - protein content) to 0.983 (milk fat yield-protein yield)., Cilj rada bio je da se procene vrednosti genetskih parametara koji imaju presudan uticaj na efekat selekcije. U radu su prikazane vrednosti fenotipske varijabilnosti kao i koeficijenata naslednosti i povezanosti između osobina mlečnosti analiziranih u ovom istraživanju. U radu je obuhvaćeno 1109 prvih standardnih laktacija, krava crnobele rase, potomaka 9 očeva gajenih na 7 farmi Poljoprivredne korporacije Beograd u toku 2008. godine. U istraživanju je ispitan uticaj oca grla, farme na kojoj je grlo gajeno i sezone teljenja na fenotipsko ispoljavanje i variranje osobina mlečnosti u standardnoj laktaciji. Na fenotipsku ispoljenost i varijabilnost prinosa mleka, prinosa mlečne masti i prinosa proteina u standardnoj laktaciji, visoku statističku značajnost (p lt 0,01) ispoljili su otac grla, farma i sezona teljenja. Utvrđene vrednosti koeficijenata naslednosti za prinos mleka, sadržaj mlečne masti, sadržaj proteina u mleku, prinos mlečne masti, prinos proteina iznosile su: 0.115, 0.049, 0.017, 0.119. i 0.111, retrospektivno. Vrednosti koeficijenata genetskih korelacija osobina mlečnosti iznosile su od: -0.746 (prinos mlečne masti-sadržaj proteina) do 0.983 (prinos mlečne masti-prinos proteina).",
publisher = "Institut PKB Agroekonomik, Padinska skela",
journal = "Zbornik naučnih radova Instituta PKB Agroekonomik",
title = "Phenotype and genotype variability and correlations between milk yield traits of black and white cattle breed primiparous cows, Fenotipska i genotipska varijabilnost i povezanost osobina mlečnosti prvotelki crno-bele rase",
pages = "22-15",
number = "3-4",
volume = "18",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3074"
}

Stanojević, D., Djedović, R., Bogdanović, V., Popovac, M., Perišić, P.,& Beskorovajni, R.. (2012). Phenotype and genotype variability and correlations between milk yield traits of black and white cattle breed primiparous cows. in Zbornik naučnih radova Instituta PKB Agroekonomik
Institut PKB Agroekonomik, Padinska skela., 18(3-4), 15-22.
https://hdl.handle.net/21.15107/rcub_agrospace_3074

Stanojević D, Djedović R, Bogdanović V, Popovac M, Perišić P, Beskorovajni R. Phenotype and genotype variability and correlations between milk yield traits of black and white cattle breed primiparous cows. in Zbornik naučnih radova Instituta PKB Agroekonomik. 2012;18(3-4):15-22.
https://hdl.handle.net/21.15107/rcub_agrospace_3074 .

Stanojević, Dragan, Djedović, Radica, Bogdanović, Vladan, Popovac, Mladen, Perišić, Predrag, Beskorovajni, Radmila, "Phenotype and genotype variability and correlations between milk yield traits of black and white cattle breed primiparous cows" in Zbornik naučnih radova Instituta PKB Agroekonomik, 18, no. 3-4 (2012):15-22,
https://hdl.handle.net/21.15107/rcub_agrospace_3074 .

TY  - JOUR
AU  - Popovac, Mladen
AU  - Radojković, Dragan
AU  - Petrović, M.
AU  - Mijatović, Milan
AU  - Gogić, Marija
AU  - Stanojević, Dragan
AU  - Stanišić, Nikola
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2847
AB  - Purpose of this paper was to determine fertility traits heritability coefficients of the sows (number of live born, total number of born, stillborn and reared piglets in the litter) and interconnections between these traits. Heritability coefficients were low and averaged in interval from h2 = 0,056 for number of reared piglets in litter to h2 = 0,142 for total number of born piglets in litter, which is in accordance with heritability values for reproductive traits. Genetic interconnections of these traits had wide variation interval and averaged from r = - 0,221 between number of still born and reared piglets in litter to r = 0,947 between total number of born and number of live born piglets in litter. Coefficients of phenotype correlation varied in interval from r = -0,162 between number of still born and number of live born piglets in litter to r = 0,909 between total number of born and number of live born piglets in litter.
AB  - Cilj rada bio je da se utvrde koeficijenti naslednosti osobina plodnosti krmača (broj živorođene, ukupno rođene, mrtvorođene i odgajene prasadi u leglu) i međusobna povezanost ovih osobina. Koeficijenti heritabiliteta su bili niski i kretali su se u intervalu od h2 = 0,056 za broj odgajene prasadi u leglu do h2 = 0,142 za broj ukupno rođene prasadi u leglu, što je u skladu sa vrednostima heritabiliteta za reproduktivne osobine. Genetska povezanost ovih osobina imala je širok interval variranja i kretala se od r = -0,221 između broja mrtvorođene i broja odgajene prasadi u leglu, do r = 0,947 između broja ukupno rođene i broja živorođene prasadi u leglu. Koeficijenti fenotipske korelacije kretali su se u intervalu od r = -0,162 između broja mrtvorođene i broja živorođene prasadi u leglu, do r = 0,909 između broja ukupno rođene i broja živorođene prasadi u leglu.
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - Heritability and connections of sow fertility traits
T1  - Naslednost i povezanost osobina plodnosti krmača
EP  - 475
IS  - 3
SP  - 469
VL  - 28
DO  - 10.2298/BAH1203469P
ER  - 

@article{
author = "Popovac, Mladen and Radojković, Dragan and Petrović, M. and Mijatović, Milan and Gogić, Marija and Stanojević, Dragan and Stanišić, Nikola",
year = "2012",
abstract = "Purpose of this paper was to determine fertility traits heritability coefficients of the sows (number of live born, total number of born, stillborn and reared piglets in the litter) and interconnections between these traits. Heritability coefficients were low and averaged in interval from h2 = 0,056 for number of reared piglets in litter to h2 = 0,142 for total number of born piglets in litter, which is in accordance with heritability values for reproductive traits. Genetic interconnections of these traits had wide variation interval and averaged from r = - 0,221 between number of still born and reared piglets in litter to r = 0,947 between total number of born and number of live born piglets in litter. Coefficients of phenotype correlation varied in interval from r = -0,162 between number of still born and number of live born piglets in litter to r = 0,909 between total number of born and number of live born piglets in litter., Cilj rada bio je da se utvrde koeficijenti naslednosti osobina plodnosti krmača (broj živorođene, ukupno rođene, mrtvorođene i odgajene prasadi u leglu) i međusobna povezanost ovih osobina. Koeficijenti heritabiliteta su bili niski i kretali su se u intervalu od h2 = 0,056 za broj odgajene prasadi u leglu do h2 = 0,142 za broj ukupno rođene prasadi u leglu, što je u skladu sa vrednostima heritabiliteta za reproduktivne osobine. Genetska povezanost ovih osobina imala je širok interval variranja i kretala se od r = -0,221 između broja mrtvorođene i broja odgajene prasadi u leglu, do r = 0,947 između broja ukupno rođene i broja živorođene prasadi u leglu. Koeficijenti fenotipske korelacije kretali su se u intervalu od r = -0,162 između broja mrtvorođene i broja živorođene prasadi u leglu, do r = 0,909 između broja ukupno rođene i broja živorođene prasadi u leglu.",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "Heritability and connections of sow fertility traits, Naslednost i povezanost osobina plodnosti krmača",
pages = "475-469",
number = "3",
volume = "28",
doi = "10.2298/BAH1203469P"
}

Popovac, M., Radojković, D., Petrović, M., Mijatović, M., Gogić, M., Stanojević, D.,& Stanišić, N.. (2012). Heritability and connections of sow fertility traits. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 28(3), 469-475.
https://doi.org/10.2298/BAH1203469P

Popovac M, Radojković D, Petrović M, Mijatović M, Gogić M, Stanojević D, Stanišić N. Heritability and connections of sow fertility traits. in Biotechnology in Animal Husbandry. 2012;28(3):469-475.
doi:10.2298/BAH1203469P .

Popovac, Mladen, Radojković, Dragan, Petrović, M., Mijatović, Milan, Gogić, Marija, Stanojević, Dragan, Stanišić, Nikola, "Heritability and connections of sow fertility traits" in Biotechnology in Animal Husbandry, 28, no. 3 (2012):469-475,
https://doi.org/10.2298/BAH1203469P . .

TY  - JOUR
AU  - Radojković, Dragan
AU  - Petrović, M.
AU  - Radović, Čedomir
AU  - Parunović, Nenad
AU  - Popovac, Mladen
AU  - Gogić, Marija
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2911
AB  - The aim of this study was to determine the heritability coefficients and the correlation between the number of live born piglets (NBA), the number of stillborn piglets (NSB), the number of total born piglets (NTB) and the number of weaned piglets (NW) in the part of population in Swedish Landrace sows in R. Serbia. The results obtained should enable the selection of litter size traits that would be proposed to be included in the selection - breeding program for this breed. The analysis of parameters was carried out on the basis of data on fertility of 4.061 Swedish Landrace sows and their 15.209 litters realized on two pig farms in R. Serbia. There was a genetic relationship between animals among the farms. Components of variance and covariance of observed traits, the share of additive genetic variance component in the phenotypic and correlation of traits at phenotypic and genetic levels, were evaluated using the method of Restricted Maximum Likelihood (REML) using the Multitrait Model (MM). Heritability estimates for the NBA, NSB, NTB and NW amounted to 6.4, 1.6, 6.7 and 1.1%, respectively. Correlation between the NBA and NTB at the phenotypic and genetic level was complete (rP = 0986, rG = 0938). Correlation between the NBA and NW at the phenotypic level has not been established, while at the genetic level it was weak. We believe that this is the result of the procedure of equalizing of litters after farrowing. In order to obtain objective genetic parameters for NW this procedure should not be applied in pure breed sows.
AB  - Cilj istraživanja bio je da se utvrde koeficijenti naslednosti i povezanosti između broja živorođene prasadi (NBA), broja mrtvorođene prasadi (NSB), broja ukupno rođene prasadi (NTB) i broja odgajene prasadi (NW) u delu populacije krmača rase švedski landras u R. Srbiji. Dobijeni rezultati treba da omoguće izbor osobina veličine legla koje bi bile predložene za uključivanje u selekcijsko - odgajivački program za ovu rasu. Ocena analiziranih parametara sprovedena je na osnovu podataka o plodnosti 4061 krmača rase švedski landras i njihovih 15209 legala ostvarenih na dve farme svinja u R. Srbiji između kojih postoji genetska povezanost među životinjama. Komponente varijanse i kovarijanse posmatranih osobina, udeo aditivne genetske komponente varijanse u fenotipskoj i povezanost osobina na fenotipskom i genetskom nivou ocenjene su metodom ograničene najveće verovatnoće (REML - Restricted Maximum Likelihood) primenom višeosobinskog modela (MM - Multitrait Model). Heritabiliteti za NBA, NSB, NTB i NW su iznosili 6.4, 1.6, 6.7 i 1.1 %, respectively. Povezanost NBA i NTB na fenotipskom i na genetskom nivou je bila potpuna (rP = 0.986, rG = 0.938). Povezanost NBA i NW na fenotipskom nivou nije utvrđena, dok je na genetskom bila slaba. Smatramo da je to posledica postupka ujednačavanja legala posle prašenja. Radi dobijanja objektivnih genetskih parametara za NW ovaj postupak ne treba primenjivati kod čistorasnih krmača.
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - Heritability and correlation of litter traits in pigs determined by REML method
T1  - Naslednost i povezanost osobina veličine legla svinja utvrđena REML metodom
EP  - 778
IS  - 4
SP  - 771
VL  - 28
DO  - 10.2298/BAH1204771R
ER  - 

@article{
author = "Radojković, Dragan and Petrović, M. and Radović, Čedomir and Parunović, Nenad and Popovac, Mladen and Gogić, Marija",
year = "2012",
abstract = "The aim of this study was to determine the heritability coefficients and the correlation between the number of live born piglets (NBA), the number of stillborn piglets (NSB), the number of total born piglets (NTB) and the number of weaned piglets (NW) in the part of population in Swedish Landrace sows in R. Serbia. The results obtained should enable the selection of litter size traits that would be proposed to be included in the selection - breeding program for this breed. The analysis of parameters was carried out on the basis of data on fertility of 4.061 Swedish Landrace sows and their 15.209 litters realized on two pig farms in R. Serbia. There was a genetic relationship between animals among the farms. Components of variance and covariance of observed traits, the share of additive genetic variance component in the phenotypic and correlation of traits at phenotypic and genetic levels, were evaluated using the method of Restricted Maximum Likelihood (REML) using the Multitrait Model (MM). Heritability estimates for the NBA, NSB, NTB and NW amounted to 6.4, 1.6, 6.7 and 1.1%, respectively. Correlation between the NBA and NTB at the phenotypic and genetic level was complete (rP = 0986, rG = 0938). Correlation between the NBA and NW at the phenotypic level has not been established, while at the genetic level it was weak. We believe that this is the result of the procedure of equalizing of litters after farrowing. In order to obtain objective genetic parameters for NW this procedure should not be applied in pure breed sows., Cilj istraživanja bio je da se utvrde koeficijenti naslednosti i povezanosti između broja živorođene prasadi (NBA), broja mrtvorođene prasadi (NSB), broja ukupno rođene prasadi (NTB) i broja odgajene prasadi (NW) u delu populacije krmača rase švedski landras u R. Srbiji. Dobijeni rezultati treba da omoguće izbor osobina veličine legla koje bi bile predložene za uključivanje u selekcijsko - odgajivački program za ovu rasu. Ocena analiziranih parametara sprovedena je na osnovu podataka o plodnosti 4061 krmača rase švedski landras i njihovih 15209 legala ostvarenih na dve farme svinja u R. Srbiji između kojih postoji genetska povezanost među životinjama. Komponente varijanse i kovarijanse posmatranih osobina, udeo aditivne genetske komponente varijanse u fenotipskoj i povezanost osobina na fenotipskom i genetskom nivou ocenjene su metodom ograničene najveće verovatnoće (REML - Restricted Maximum Likelihood) primenom višeosobinskog modela (MM - Multitrait Model). Heritabiliteti za NBA, NSB, NTB i NW su iznosili 6.4, 1.6, 6.7 i 1.1 %, respectively. Povezanost NBA i NTB na fenotipskom i na genetskom nivou je bila potpuna (rP = 0.986, rG = 0.938). Povezanost NBA i NW na fenotipskom nivou nije utvrđena, dok je na genetskom bila slaba. Smatramo da je to posledica postupka ujednačavanja legala posle prašenja. Radi dobijanja objektivnih genetskih parametara za NW ovaj postupak ne treba primenjivati kod čistorasnih krmača.",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "Heritability and correlation of litter traits in pigs determined by REML method, Naslednost i povezanost osobina veličine legla svinja utvrđena REML metodom",
pages = "778-771",
number = "4",
volume = "28",
doi = "10.2298/BAH1204771R"
}

Radojković, D., Petrović, M., Radović, Č., Parunović, N., Popovac, M.,& Gogić, M.. (2012). Heritability and correlation of litter traits in pigs determined by REML method. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 28(4), 771-778.
https://doi.org/10.2298/BAH1204771R

Radojković D, Petrović M, Radović Č, Parunović N, Popovac M, Gogić M. Heritability and correlation of litter traits in pigs determined by REML method. in Biotechnology in Animal Husbandry. 2012;28(4):771-778.
doi:10.2298/BAH1204771R .

Radojković, Dragan, Petrović, M., Radović, Čedomir, Parunović, Nenad, Popovac, Mladen, Gogić, Marija, "Heritability and correlation of litter traits in pigs determined by REML method" in Biotechnology in Animal Husbandry, 28, no. 4 (2012):771-778,
https://doi.org/10.2298/BAH1204771R . .

TY  - JOUR
AU  - Radojković, Dragan
AU  - Petrović, M.
AU  - Mijatović, Milan
AU  - Radović, Čedomir
AU  - Popovac, Mladen
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2555
AB  - Low heritability of pig litter size traits at birth (number of live born piglets - LBP and total born piglets - TBP) and weaning (number of reared piglets - RP) is one of the major problems in their genetic improvement. The effect of selection is directly proportional to trait heritability and inversely proportional to the duration of generation interval. Objective of this study was to establish presence of difference in regard to heritability coefficient values of observed traits, as well as their accuracy depending on the size of data used in the analysis. Heritability coefficients in this study were calculated based on fertility results obtained for Swedish Landrace sows on three pig farms (farms 1, 2 and 3) in the Republic of Serbia. Observed traits - LBP, TBP and RP on farms 1, 2 and 3 were analyzed in the first (2422, 1677 and 2015 litters), in the first two (4190, 2897 and 3377 litters), in the first three (5576, 3809 and 4425 litters) and all available parities (9538, 6340 and 7750 litters) by applying the adequate mixed model of the Least square method. Heritability of LBP calculated based on fertility realized in the first partus ranged from 5.6 to 16.4 %, TBP ranged from 7.0 to 16.8 % and RP ranged from 3.4 to 7.7 %. Introduction into the analysis of the results pertaining to the second, third and subsequent parities lead mainly to detection of lower values of heritability coefficients for observed traits.
AB  - U ovom radu rezultati istraživanja su pokazali da su koeficijenti heritabiliteta BŽP izračunati na osnovu plodnosti ostvarene u prvom prašenju bili u intervalu od 5,6 do 16,4 %, BUP u intervalu od 7,0 do 16,8 % i BOP u intervalu od 3,4 do 7,7 %. Uvođenje u analizu rezultata plodnosti drugog, trećeg i svih ostalih prašenja dovelo je uglavnom do utvrđivanja nižih vrednosti koeficijenata heritabiliteta posmatranih osobina.
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - The effect of scope of analyzed data on the value of the heritability coefficient of litter size traits in pigs
T1  - Uticaj obima analiziranih podataka na vrednost koeficijenata heritabiliteta osobina veličine legla svinja
EP  - 783
IS  - 3
SP  - 777
VL  - 27
DO  - 10.2298/BAH1103777R
ER  - 

@article{
author = "Radojković, Dragan and Petrović, M. and Mijatović, Milan and Radović, Čedomir and Popovac, Mladen",
year = "2011",
abstract = "Low heritability of pig litter size traits at birth (number of live born piglets - LBP and total born piglets - TBP) and weaning (number of reared piglets - RP) is one of the major problems in their genetic improvement. The effect of selection is directly proportional to trait heritability and inversely proportional to the duration of generation interval. Objective of this study was to establish presence of difference in regard to heritability coefficient values of observed traits, as well as their accuracy depending on the size of data used in the analysis. Heritability coefficients in this study were calculated based on fertility results obtained for Swedish Landrace sows on three pig farms (farms 1, 2 and 3) in the Republic of Serbia. Observed traits - LBP, TBP and RP on farms 1, 2 and 3 were analyzed in the first (2422, 1677 and 2015 litters), in the first two (4190, 2897 and 3377 litters), in the first three (5576, 3809 and 4425 litters) and all available parities (9538, 6340 and 7750 litters) by applying the adequate mixed model of the Least square method. Heritability of LBP calculated based on fertility realized in the first partus ranged from 5.6 to 16.4 %, TBP ranged from 7.0 to 16.8 % and RP ranged from 3.4 to 7.7 %. Introduction into the analysis of the results pertaining to the second, third and subsequent parities lead mainly to detection of lower values of heritability coefficients for observed traits., U ovom radu rezultati istraživanja su pokazali da su koeficijenti heritabiliteta BŽP izračunati na osnovu plodnosti ostvarene u prvom prašenju bili u intervalu od 5,6 do 16,4 %, BUP u intervalu od 7,0 do 16,8 % i BOP u intervalu od 3,4 do 7,7 %. Uvođenje u analizu rezultata plodnosti drugog, trećeg i svih ostalih prašenja dovelo je uglavnom do utvrđivanja nižih vrednosti koeficijenata heritabiliteta posmatranih osobina.",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "The effect of scope of analyzed data on the value of the heritability coefficient of litter size traits in pigs, Uticaj obima analiziranih podataka na vrednost koeficijenata heritabiliteta osobina veličine legla svinja",
pages = "783-777",
number = "3",
volume = "27",
doi = "10.2298/BAH1103777R"
}

Radojković, D., Petrović, M., Mijatović, M., Radović, Č.,& Popovac, M.. (2011). The effect of scope of analyzed data on the value of the heritability coefficient of litter size traits in pigs. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 27(3), 777-783.
https://doi.org/10.2298/BAH1103777R

Radojković D, Petrović M, Mijatović M, Radović Č, Popovac M. The effect of scope of analyzed data on the value of the heritability coefficient of litter size traits in pigs. in Biotechnology in Animal Husbandry. 2011;27(3):777-783.
doi:10.2298/BAH1103777R .

Radojković, Dragan, Petrović, M., Mijatović, Milan, Radović, Čedomir, Popovac, Mladen, "The effect of scope of analyzed data on the value of the heritability coefficient of litter size traits in pigs" in Biotechnology in Animal Husbandry, 27, no. 3 (2011):777-783,
https://doi.org/10.2298/BAH1103777R . .

TY  - JOUR
AU  - Petrović, M.
AU  - Radović, Čedomir
AU  - Parunović, Nenad
AU  - Mijatović, Milan
AU  - Radojković, Dragan
AU  - Aleksić, S.
AU  - Stanišić, Nikola
AU  - Popovac, Mladen
PY  - 2010
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2208
AB  - Objective of this paper was to evaluate phenotypic variability of carcass side traits and quality of meat of fatteners (male castrated heads) of Moravka breed (M) and Mangalitsa (swallow-belly Mangalitsa - LM). The quantity and content of meat were determined based on dissection of left carcass sides (Walstra and Merkus, 1996). Also, nutritive properties of musculus longissimus dorsi (m.l.d.) were established. Obtained data were processed using GLM procedure of the program package SAS 9.1.3 (SAS Inst.Inc., 2002-2003). Results of the study show that Moravka fatteners had longer carcass sides (+6.82 and + 5.00 cm) compared to Mangalitsa breed, corrected to average body weight at slaughtering. Fatteners of M breed had in average higher total mass of back-loin part (+0.685, P lt 0.05) and average quantity of muscles in the same part of carcass side (+0.631 kg, P lt 0.01), compared to fatteners of LM breed. Also, they had higher quantity of muscle in belly-rib part (+0.237 kg, P lt 0.05) compared to LM. Share of muscle tissue in back-loin and belly-rib carcass side parts corrected for WCC, was higher in M carcass sides than in LM (P lt 0.01). Conversely, muscle tissue content in shoulders of Mangalitsa was higher (+4.8% ; P lt 0.05) than in Moravka. Share of muscle tissue in carcass sides of M pigs was by 4.3% higher compared to LM carcass sides. In m.l.d. of Moravka water content was higher (+6.1%, P lt 0.01), content of total lipids (-6.5%, P lt 0.05) and cholesterol (-19.68 mg/100 g, P lt 0.001) was lower than in Mangalitsa.
AB  - Rezultati ispitivanja pokazuju da su tovljenici rase moravka imali duže polutke od rase mangulica, korigovane na prosečnu telesnu masu pri klanju. Tovljenici rase M imali su prosečno veću ukupnu masu leđno-slabinskog dela (P lt 0,05) i prosečnu količinu mišića u istom delu polutki (P lt 0,01), nego rase LM. Takodje, oni su imali i veću količinu mišića u trbušno-rebarnom delu (P lt 0,05) nego LM. Udeo mišićnog tkiva u leđno-slabinskom i trbušno-rebarnom delu korigovan na WCC, bio je veći polutkama M nego kod LM (P lt 0,01). Obrnuto, sadržaj mišićnog tkiva u plećkama mangulice bio je veći nego kod moravke (P lt 0,05). Udeo mišićnog tkiva u polutkama svinja M, bio je za 4,3% veći nego u polutkama LM. U m.l.d. moravke bio je veći sadržaj vode (P lt 0,01), manji sadržaj ukupnih masti (-6,5%, P lt 0,05) i holesterola (-19,68 mg/100g, P lt 0,001) nego kod mangulice.
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - Quality traits of carcass sides and meat of Moravka and Mangalitsa pig breeds
T1  - Osobine kvaliteta polutki i mesa svinja rase moravka i mangulica
EP  - 27
IS  - 1-2
SP  - 21
VL  - 26
DO  - 10.2298/BAH1002021P
ER  - 

@article{
author = "Petrović, M. and Radović, Čedomir and Parunović, Nenad and Mijatović, Milan and Radojković, Dragan and Aleksić, S. and Stanišić, Nikola and Popovac, Mladen",
year = "2010",
abstract = "Objective of this paper was to evaluate phenotypic variability of carcass side traits and quality of meat of fatteners (male castrated heads) of Moravka breed (M) and Mangalitsa (swallow-belly Mangalitsa - LM). The quantity and content of meat were determined based on dissection of left carcass sides (Walstra and Merkus, 1996). Also, nutritive properties of musculus longissimus dorsi (m.l.d.) were established. Obtained data were processed using GLM procedure of the program package SAS 9.1.3 (SAS Inst.Inc., 2002-2003). Results of the study show that Moravka fatteners had longer carcass sides (+6.82 and + 5.00 cm) compared to Mangalitsa breed, corrected to average body weight at slaughtering. Fatteners of M breed had in average higher total mass of back-loin part (+0.685, P lt 0.05) and average quantity of muscles in the same part of carcass side (+0.631 kg, P lt 0.01), compared to fatteners of LM breed. Also, they had higher quantity of muscle in belly-rib part (+0.237 kg, P lt 0.05) compared to LM. Share of muscle tissue in back-loin and belly-rib carcass side parts corrected for WCC, was higher in M carcass sides than in LM (P lt 0.01). Conversely, muscle tissue content in shoulders of Mangalitsa was higher (+4.8% ; P lt 0.05) than in Moravka. Share of muscle tissue in carcass sides of M pigs was by 4.3% higher compared to LM carcass sides. In m.l.d. of Moravka water content was higher (+6.1%, P lt 0.01), content of total lipids (-6.5%, P lt 0.05) and cholesterol (-19.68 mg/100 g, P lt 0.001) was lower than in Mangalitsa., Rezultati ispitivanja pokazuju da su tovljenici rase moravka imali duže polutke od rase mangulica, korigovane na prosečnu telesnu masu pri klanju. Tovljenici rase M imali su prosečno veću ukupnu masu leđno-slabinskog dela (P lt 0,05) i prosečnu količinu mišića u istom delu polutki (P lt 0,01), nego rase LM. Takodje, oni su imali i veću količinu mišića u trbušno-rebarnom delu (P lt 0,05) nego LM. Udeo mišićnog tkiva u leđno-slabinskom i trbušno-rebarnom delu korigovan na WCC, bio je veći polutkama M nego kod LM (P lt 0,01). Obrnuto, sadržaj mišićnog tkiva u plećkama mangulice bio je veći nego kod moravke (P lt 0,05). Udeo mišićnog tkiva u polutkama svinja M, bio je za 4,3% veći nego u polutkama LM. U m.l.d. moravke bio je veći sadržaj vode (P lt 0,01), manji sadržaj ukupnih masti (-6,5%, P lt 0,05) i holesterola (-19,68 mg/100g, P lt 0,001) nego kod mangulice.",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "Quality traits of carcass sides and meat of Moravka and Mangalitsa pig breeds, Osobine kvaliteta polutki i mesa svinja rase moravka i mangulica",
pages = "27-21",
number = "1-2",
volume = "26",
doi = "10.2298/BAH1002021P"
}

Petrović, M., Radović, Č., Parunović, N., Mijatović, M., Radojković, D., Aleksić, S., Stanišić, N.,& Popovac, M.. (2010). Quality traits of carcass sides and meat of Moravka and Mangalitsa pig breeds. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 26(1-2), 21-27.
https://doi.org/10.2298/BAH1002021P

Petrović M, Radović Č, Parunović N, Mijatović M, Radojković D, Aleksić S, Stanišić N, Popovac M. Quality traits of carcass sides and meat of Moravka and Mangalitsa pig breeds. in Biotechnology in Animal Husbandry. 2010;26(1-2):21-27.
doi:10.2298/BAH1002021P .

Petrović, M., Radović, Čedomir, Parunović, Nenad, Mijatović, Milan, Radojković, Dragan, Aleksić, S., Stanišić, Nikola, Popovac, Mladen, "Quality traits of carcass sides and meat of Moravka and Mangalitsa pig breeds" in Biotechnology in Animal Husbandry, 26, no. 1-2 (2010):21-27,
https://doi.org/10.2298/BAH1002021P . .