Kučević, Denis

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  • Kučević, Denis (11)

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Association between age at first calving and milk production in first lactation on longevity traits in Holstein cows

Kučević, Denis; Trivunović, Snežana; Šoronja, Žika; Janković, Dobrila; Stanojević, Dragan; Djedović, Radica; Papović, Tamara

(Institut za stočarstvo, Beograd, 2020)

TY  - JOUR
AU  - Kučević, Denis
AU  - Trivunović, Snežana
AU  - Šoronja, Žika
AU  - Janković, Dobrila
AU  - Stanojević, Dragan
AU  - Djedović, Radica
AU  - Papović, Tamara
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5483
AB  - The objective of this research was to determine the association between age at first calving (AFC) and milk production in the first lactation of longevity traits for Holstein cows. The research was conducted on 2307 cows raised on 4 farms in AP Vojvodina. The cows were culled in the period from 2017 to 2018. The cows belonged to the group of Holstein Friesian breed of cattle. Cow longevity was observed using three parameters: number of lactations (NL), lifetime milk yield (LMY) and length of productive life (LPL). The research involved the influence of the farm on which the animals realized their production, the season of first calving. A mean value obtained for the length of productive life in the analysed population was 1207 days (3.30 years on average). During this period the animals on average realized 2.45 lactations and produced on average 18798 kg milk. All studied traits showed a high level of variability. From these data, the study sought to determine the influence of factors on the traits of longevity, our research present that studied factors showed high statistical significance on these traits except in the case of the season of first calving where a statistical significance effect wasn't observed. The season of first calving did not affect the animal traits for longevity and, generally, didn't affect the calving interval. Regarding the obtained correlation data between age at first calving and length of productive life, it can be concluded that belated AFC leads to reduced reproductive performance.
AB  - Sprovedeno istraživanje imalo je za cilj da utvrdi povezanost između uzrasta pri prvom teljenju i proizvodnje mleka u prvoj laktaciji sa osobinama dugovečnosti za krave holštajn-frizijske rase. Istraživanjem je obuhvaćeno 2307 krava, sa 4 različite farme sa teritorije AP Vojvodine. Krave su izlučene u periodu od 2017 do 2018 godine. Dugovečnost krava je posmatrana kroz tri pokazatelja: broj ostvarenih laktacija (NL), životna količina proizvedenog mleka (LMY) i dužina produktivnog života (LPL). Prosečno trajanje produktivnog života za sva grla uključena u analizu iznosilo je 1207 dana (3.30 godine u proseku). Grla obuhvaćena analizom u toku svog produktivnog života su prosečno proizvela 18798 kg mleka. Broj laktacija koje je svako grlo prosečno ostvarilo u toku trajanja svog produktivnog života iznosio je 2.45, pri čemu su svi ispitani parametri pokazali visok nivo varijabilnosti. U istraživanju su ispitani fiksni uticaji farme na kojoj je grlo proizvodilo, uzrasta pri prvom teljenju, sistema proizvodnje i sezone pri prvom teljenju na osobine dugovečnosti i međutelidbeni interval, korišćenjem linearnog modela. Na osnovu rezultata dobijenih istraživanjem, fiksni faktori su pokazali visoku statističku značajnost za ispitivane osobine, osim u slučaju sezone pri prvom teljenju, gde nije ispoljena statistička značajnost za osobine obuhvaćene istraživanjem. Na osnovu rezultata, utvrđena je povezanost između uzrasta pri prvom teljenju i dužine produktivnog života, pri čemu se može zaključiti da su kraći produktivni život imale životinje koje su se kasnije telile.
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - Association between age at first calving and milk production in first lactation on longevity traits in Holstein cows
T1  - Povezanost između uzrasta pri prvom teljenju i proizvodnje u prvoj laktaciji sa osobinama dugovečnosti kod mlečnih krava
EP  - 35
IS  - 1
SP  - 27
VL  - 36
DO  - 10.2298/BAH2001027K
ER  - 
@article{
author = "Kučević, Denis and Trivunović, Snežana and Šoronja, Žika and Janković, Dobrila and Stanojević, Dragan and Djedović, Radica and Papović, Tamara",
year = "2020",
abstract = "The objective of this research was to determine the association between age at first calving (AFC) and milk production in the first lactation of longevity traits for Holstein cows. The research was conducted on 2307 cows raised on 4 farms in AP Vojvodina. The cows were culled in the period from 2017 to 2018. The cows belonged to the group of Holstein Friesian breed of cattle. Cow longevity was observed using three parameters: number of lactations (NL), lifetime milk yield (LMY) and length of productive life (LPL). The research involved the influence of the farm on which the animals realized their production, the season of first calving. A mean value obtained for the length of productive life in the analysed population was 1207 days (3.30 years on average). During this period the animals on average realized 2.45 lactations and produced on average 18798 kg milk. All studied traits showed a high level of variability. From these data, the study sought to determine the influence of factors on the traits of longevity, our research present that studied factors showed high statistical significance on these traits except in the case of the season of first calving where a statistical significance effect wasn't observed. The season of first calving did not affect the animal traits for longevity and, generally, didn't affect the calving interval. Regarding the obtained correlation data between age at first calving and length of productive life, it can be concluded that belated AFC leads to reduced reproductive performance., Sprovedeno istraživanje imalo je za cilj da utvrdi povezanost između uzrasta pri prvom teljenju i proizvodnje mleka u prvoj laktaciji sa osobinama dugovečnosti za krave holštajn-frizijske rase. Istraživanjem je obuhvaćeno 2307 krava, sa 4 različite farme sa teritorije AP Vojvodine. Krave su izlučene u periodu od 2017 do 2018 godine. Dugovečnost krava je posmatrana kroz tri pokazatelja: broj ostvarenih laktacija (NL), životna količina proizvedenog mleka (LMY) i dužina produktivnog života (LPL). Prosečno trajanje produktivnog života za sva grla uključena u analizu iznosilo je 1207 dana (3.30 godine u proseku). Grla obuhvaćena analizom u toku svog produktivnog života su prosečno proizvela 18798 kg mleka. Broj laktacija koje je svako grlo prosečno ostvarilo u toku trajanja svog produktivnog života iznosio je 2.45, pri čemu su svi ispitani parametri pokazali visok nivo varijabilnosti. U istraživanju su ispitani fiksni uticaji farme na kojoj je grlo proizvodilo, uzrasta pri prvom teljenju, sistema proizvodnje i sezone pri prvom teljenju na osobine dugovečnosti i međutelidbeni interval, korišćenjem linearnog modela. Na osnovu rezultata dobijenih istraživanjem, fiksni faktori su pokazali visoku statističku značajnost za ispitivane osobine, osim u slučaju sezone pri prvom teljenju, gde nije ispoljena statistička značajnost za osobine obuhvaćene istraživanjem. Na osnovu rezultata, utvrđena je povezanost između uzrasta pri prvom teljenju i dužine produktivnog života, pri čemu se može zaključiti da su kraći produktivni život imale životinje koje su se kasnije telile.",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "Association between age at first calving and milk production in first lactation on longevity traits in Holstein cows, Povezanost između uzrasta pri prvom teljenju i proizvodnje u prvoj laktaciji sa osobinama dugovečnosti kod mlečnih krava",
pages = "35-27",
number = "1",
volume = "36",
doi = "10.2298/BAH2001027K"
}
Kučević, D., Trivunović, S., Šoronja, Ž., Janković, D., Stanojević, D., Djedović, R.,& Papović, T.. (2020). Association between age at first calving and milk production in first lactation on longevity traits in Holstein cows. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 36(1), 27-35.
https://doi.org/10.2298/BAH2001027K
Kučević D, Trivunović S, Šoronja Ž, Janković D, Stanojević D, Djedović R, Papović T. Association between age at first calving and milk production in first lactation on longevity traits in Holstein cows. in Biotechnology in Animal Husbandry. 2020;36(1):27-35.
doi:10.2298/BAH2001027K .
Kučević, Denis, Trivunović, Snežana, Šoronja, Žika, Janković, Dobrila, Stanojević, Dragan, Djedović, Radica, Papović, Tamara, "Association between age at first calving and milk production in first lactation on longevity traits in Holstein cows" in Biotechnology in Animal Husbandry, 36, no. 1 (2020):27-35,
https://doi.org/10.2298/BAH2001027K . .
4

Influence of Farm Management for Calves on Growth Performance and Meat Quality Traits Duration Fattening of Simmental Bulls and Heifers

Kučević, Denis; Papović, Tamara; Tomović, Vladimir; Plavsić, Miroslav; Jajić, Igor; Krstović, Sasa; Stanojević, Dragan

(MDPI, BASEL, 2019)

TY  - JOUR
AU  - Kučević, Denis
AU  - Papović, Tamara
AU  - Tomović, Vladimir
AU  - Plavsić, Miroslav
AU  - Jajić, Igor
AU  - Krstović, Sasa
AU  - Stanojević, Dragan
PY  - 2019
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4969
AB  - Simple Summary: Cattle have been selected for their adaptation to a specific environment and productive system, in which they show, in theory, their best economical results. With appropriate nutrition, the calf's performance enhances during early life and improve the production limit providing distinctive opportunities to optimize feeding strategies and increase the profitability of beef production. There is considerable variation in fattening protocols as well as in farm conditions. Meat quality parameters and carcass traits are the main objectives of most research carried out in the beef production area. Optimizing meat quality parameters and carcass traits are important for farmer profits and consumer satisfaction. According to that, at the phenotypic level, growth performance and traits could be observed. Rearing practices are known to have an impact on cattle carcasses and meat characteristics. The rearing practices applied after calving have an influence on the animal's performance at the growth period and can involve different animal properties at the beginning of the fattening period. Abstract: This study assessed the effects of farm management during rearing practices in the first months of a calf's life on growth performance and meat quality traits during the fattening period. A total of 48 Simmental calves were divided into two groups at a commercial cattle feedlot. In the first group were calves from the same farm and herd (n = 12 male and n = 12 female). The second group included calves from several different herds and farms (n = 12 male and n= 12 female). Calves were transferred to a feedlot and fed with a commercial feedlot ration at three to four months of age. The aim was to determine if identical fattening conditions at feedlot can reduce initial calf rearing differences between cattle during the fattening period. Bulls grew faster than heifers reaching higher total gain and showed significantly higher slaughter weight than heifers. Meat samples of heifers from the same herd had the highest intramuscular fat content and reddest color with significant differences among cattle groups. The most abundant fatty acid was oleic acid (C18:1), followed by palmitic (C16:0), stearic (C18:0), linoleic (C18:2), and myristic acid (C14:0). Meat samples of heifers from different herds were darkest with highest content of iron (Fe) with significant differences among cattle groups.
PB  - MDPI, BASEL
T2  - Animals
T1  - Influence of Farm Management for Calves on Growth Performance and Meat Quality Traits Duration Fattening of Simmental Bulls and Heifers
IS  - 11
VL  - 9
DO  - 10.3390/ani9110941
ER  - 
@article{
author = "Kučević, Denis and Papović, Tamara and Tomović, Vladimir and Plavsić, Miroslav and Jajić, Igor and Krstović, Sasa and Stanojević, Dragan",
year = "2019",
abstract = "Simple Summary: Cattle have been selected for their adaptation to a specific environment and productive system, in which they show, in theory, their best economical results. With appropriate nutrition, the calf's performance enhances during early life and improve the production limit providing distinctive opportunities to optimize feeding strategies and increase the profitability of beef production. There is considerable variation in fattening protocols as well as in farm conditions. Meat quality parameters and carcass traits are the main objectives of most research carried out in the beef production area. Optimizing meat quality parameters and carcass traits are important for farmer profits and consumer satisfaction. According to that, at the phenotypic level, growth performance and traits could be observed. Rearing practices are known to have an impact on cattle carcasses and meat characteristics. The rearing practices applied after calving have an influence on the animal's performance at the growth period and can involve different animal properties at the beginning of the fattening period. Abstract: This study assessed the effects of farm management during rearing practices in the first months of a calf's life on growth performance and meat quality traits during the fattening period. A total of 48 Simmental calves were divided into two groups at a commercial cattle feedlot. In the first group were calves from the same farm and herd (n = 12 male and n = 12 female). The second group included calves from several different herds and farms (n = 12 male and n= 12 female). Calves were transferred to a feedlot and fed with a commercial feedlot ration at three to four months of age. The aim was to determine if identical fattening conditions at feedlot can reduce initial calf rearing differences between cattle during the fattening period. Bulls grew faster than heifers reaching higher total gain and showed significantly higher slaughter weight than heifers. Meat samples of heifers from the same herd had the highest intramuscular fat content and reddest color with significant differences among cattle groups. The most abundant fatty acid was oleic acid (C18:1), followed by palmitic (C16:0), stearic (C18:0), linoleic (C18:2), and myristic acid (C14:0). Meat samples of heifers from different herds were darkest with highest content of iron (Fe) with significant differences among cattle groups.",
publisher = "MDPI, BASEL",
journal = "Animals",
title = "Influence of Farm Management for Calves on Growth Performance and Meat Quality Traits Duration Fattening of Simmental Bulls and Heifers",
number = "11",
volume = "9",
doi = "10.3390/ani9110941"
}
Kučević, D., Papović, T., Tomović, V., Plavsić, M., Jajić, I., Krstović, S.,& Stanojević, D.. (2019). Influence of Farm Management for Calves on Growth Performance and Meat Quality Traits Duration Fattening of Simmental Bulls and Heifers. in Animals
MDPI, BASEL., 9(11).
https://doi.org/10.3390/ani9110941
Kučević D, Papović T, Tomović V, Plavsić M, Jajić I, Krstović S, Stanojević D. Influence of Farm Management for Calves on Growth Performance and Meat Quality Traits Duration Fattening of Simmental Bulls and Heifers. in Animals. 2019;9(11).
doi:10.3390/ani9110941 .
Kučević, Denis, Papović, Tamara, Tomović, Vladimir, Plavsić, Miroslav, Jajić, Igor, Krstović, Sasa, Stanojević, Dragan, "Influence of Farm Management for Calves on Growth Performance and Meat Quality Traits Duration Fattening of Simmental Bulls and Heifers" in Animals, 9, no. 11 (2019),
https://doi.org/10.3390/ani9110941 . .
8
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Genetic trend of functional productive life in the population of black and white cattle in Serbia

Stanojević, Dragan; Djedović, Radica; Bogdanović, Vladan; Raguz, Nikola; Kučević, Denis; Popovac, Mladen; Stojić, Petar; Samolovac, Ljiljana

(Društvo genetičara Srbije, Beograd, 2018)

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 . .
7
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Impact of non nutritional factors on milk urea concentration and its relationship with production and fertility traits in Vojvodina dairy herds

Čobanović, Ksenija; Kučević, Denis; Plavsić, Miroslav; Bogdanović, Vladan

(Croatian Dairy Union, Zagreb, 2017)

TY  - JOUR
AU  - Čobanović, Ksenija
AU  - Kučević, Denis
AU  - Plavsić, Miroslav
AU  - Bogdanović, Vladan
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4482
AB  - The purpose of this study was to examine possible relationship between milk urea and fertility of dairy cows using field data. This study also evaluated the influence of environmental factors on milk urea (MU) and the relationship between MU and daily milk yield, milk fat and protein percentage. The data were collected at 11 dairy farms in the Vojvodina region. Reproductive data and MU measurements were obtained from cows that calved between June 2013 and October 2015 and had a successful conception after calving. Statistical data processing was carried out by applying General Linear Model procedure, Statistics 13. Parity, calving season, season of milk control and farm were included in the models as fixed effects. Significant differences in MU concentrations were observed between farms (P lt 0.01), seasons (P lt 0.01) and parity (P lt 0.05). Highly significant (P lt 0.01) positive relationships were found between MU concentration and milk yield, fat and protein percentage and days open. Cows with MU levels below 10 mg dL(-1) had the lowest day open interval (135.59 days) and cows with MU higher than 35 mg dL(-1) had the longest days open interval (163.18 days). The cows with the lowest mean MU values ( lt 10 mg dL(-1)), had the shortest days open interval (72.62 days), but cows with mean MU values between 20.01-25.00 mg dL(-1) had the longest days open interval (161.78 days). Results of this study indicate that increased MU levels appear to have a negative effect on dairy cow fertility.
PB  - Croatian Dairy Union, Zagreb
T2  - Mljekarstvo
T1  - Impact of non nutritional factors on milk urea concentration and its relationship with production and fertility traits in Vojvodina dairy herds
EP  - 276
IS  - 4
SP  - 267
VL  - 67
DO  - 10.15567/mljekarstvo.2017.0404
ER  - 
@article{
author = "Čobanović, Ksenija and Kučević, Denis and Plavsić, Miroslav and Bogdanović, Vladan",
year = "2017",
abstract = "The purpose of this study was to examine possible relationship between milk urea and fertility of dairy cows using field data. This study also evaluated the influence of environmental factors on milk urea (MU) and the relationship between MU and daily milk yield, milk fat and protein percentage. The data were collected at 11 dairy farms in the Vojvodina region. Reproductive data and MU measurements were obtained from cows that calved between June 2013 and October 2015 and had a successful conception after calving. Statistical data processing was carried out by applying General Linear Model procedure, Statistics 13. Parity, calving season, season of milk control and farm were included in the models as fixed effects. Significant differences in MU concentrations were observed between farms (P lt 0.01), seasons (P lt 0.01) and parity (P lt 0.05). Highly significant (P lt 0.01) positive relationships were found between MU concentration and milk yield, fat and protein percentage and days open. Cows with MU levels below 10 mg dL(-1) had the lowest day open interval (135.59 days) and cows with MU higher than 35 mg dL(-1) had the longest days open interval (163.18 days). The cows with the lowest mean MU values ( lt 10 mg dL(-1)), had the shortest days open interval (72.62 days), but cows with mean MU values between 20.01-25.00 mg dL(-1) had the longest days open interval (161.78 days). Results of this study indicate that increased MU levels appear to have a negative effect on dairy cow fertility.",
publisher = "Croatian Dairy Union, Zagreb",
journal = "Mljekarstvo",
title = "Impact of non nutritional factors on milk urea concentration and its relationship with production and fertility traits in Vojvodina dairy herds",
pages = "276-267",
number = "4",
volume = "67",
doi = "10.15567/mljekarstvo.2017.0404"
}
Čobanović, K., Kučević, D., Plavsić, M.,& Bogdanović, V.. (2017). Impact of non nutritional factors on milk urea concentration and its relationship with production and fertility traits in Vojvodina dairy herds. in Mljekarstvo
Croatian Dairy Union, Zagreb., 67(4), 267-276.
https://doi.org/10.15567/mljekarstvo.2017.0404
Čobanović K, Kučević D, Plavsić M, Bogdanović V. Impact of non nutritional factors on milk urea concentration and its relationship with production and fertility traits in Vojvodina dairy herds. in Mljekarstvo. 2017;67(4):267-276.
doi:10.15567/mljekarstvo.2017.0404 .
Čobanović, Ksenija, Kučević, Denis, Plavsić, Miroslav, Bogdanović, Vladan, "Impact of non nutritional factors on milk urea concentration and its relationship with production and fertility traits in Vojvodina dairy herds" in Mljekarstvo, 67, no. 4 (2017):267-276,
https://doi.org/10.15567/mljekarstvo.2017.0404 . .
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5

Composition of raw milk from conventional and organic dairy farming

Kučević, Denis; Trivunović, Snežana; Bogdanović, Vladan; Čobanović, Ksenija; Janković, Dobrila; Stanojević, Dragan

(Institut za stočarstvo, Beograd, 2016)

TY  - JOUR
AU  - Kučević, Denis
AU  - Trivunović, Snežana
AU  - Bogdanović, Vladan
AU  - Čobanović, Ksenija
AU  - Janković, Dobrila
AU  - Stanojević, Dragan
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4254
AB  - Possible differences between composition of raw milk due to dairy farming system (organic vs conventional) as well as seasonal variations were investigated. The samples were analysed during one year. A total of 6.782 samples of raw milk were collected (4.496 from organic farming). Dairy farms were located in the northern part of Republic of Serbia (Province of Vojvodina). The principle of analysis of raw milk samples was in accordance with the methodology by midinfrared spectrometry and flow cytometry. The fixed effect of system of farming and season (winter, spring, summer and fall) have shown a high statistical significance (P  lt  0.01) on all examined milk parameters except fat, total solids and somatic cell count, where the impact was slightly lower (P  lt  0.05). Significant difference wasn't found in number of bacterial colonies (P > 0.05). Composition of milk is also affected by a number of other factors, therefore it is recommended to involve factors such as nutrition of dairy cows, breed and farm management.
AB  - Cilj rada je bio da se ispitaju razlike između sirovog mleka dobijenog u različitim sezonama i sistemima proizvodnje (organska/ konvencionalna). Uzorci mleka su sakupljani u toku čitave godine. Ukupno je sakupljeno 6782 (od čega 4496 iz organske proizvodnje). Farme su bile locirane na severnom delu Srbije (AP Vojvodina). Sirovi uzorci mleka su analizirani u skladu sa metodologijom infracrvene spektometrije i protočne citometrije. Fiksni uticaji sistema proizvodnje i sezone (zima, proleće, leto i jesen) su pokazali visoku signifikantnu značajnost (P  lt  0,01) na sve ispitivane parametre mleka osim na mlečnu mast, ukupnu suvu materiju i ukupan broj somatskih ćelija, gde je uticaj bio signifikantan na nivou (P  lt  0,05). Statistički značajna razlika nije pronađena u ukupnom broju bakterija (kolonija) (P > 0,05). Na sastav mleka takođe utiče i veliki broj drugih faktora, stoga je za preporuku da se u ispitivanje uključe i faktori poput ishrane mlečnih krava, rase i farmskog menadžmenta.
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - Composition of raw milk from conventional and organic dairy farming
T1  - Sastav sirovog mleka dobijen u sistemu konvencionalne i organske proizvodnje
EP  - 143
IS  - 2
SP  - 133
VL  - 32
DO  - 10.2298/BAH1602133K
ER  - 
@article{
author = "Kučević, Denis and Trivunović, Snežana and Bogdanović, Vladan and Čobanović, Ksenija and Janković, Dobrila and Stanojević, Dragan",
year = "2016",
abstract = "Possible differences between composition of raw milk due to dairy farming system (organic vs conventional) as well as seasonal variations were investigated. The samples were analysed during one year. A total of 6.782 samples of raw milk were collected (4.496 from organic farming). Dairy farms were located in the northern part of Republic of Serbia (Province of Vojvodina). The principle of analysis of raw milk samples was in accordance with the methodology by midinfrared spectrometry and flow cytometry. The fixed effect of system of farming and season (winter, spring, summer and fall) have shown a high statistical significance (P  lt  0.01) on all examined milk parameters except fat, total solids and somatic cell count, where the impact was slightly lower (P  lt  0.05). Significant difference wasn't found in number of bacterial colonies (P > 0.05). Composition of milk is also affected by a number of other factors, therefore it is recommended to involve factors such as nutrition of dairy cows, breed and farm management., Cilj rada je bio da se ispitaju razlike između sirovog mleka dobijenog u različitim sezonama i sistemima proizvodnje (organska/ konvencionalna). Uzorci mleka su sakupljani u toku čitave godine. Ukupno je sakupljeno 6782 (od čega 4496 iz organske proizvodnje). Farme su bile locirane na severnom delu Srbije (AP Vojvodina). Sirovi uzorci mleka su analizirani u skladu sa metodologijom infracrvene spektometrije i protočne citometrije. Fiksni uticaji sistema proizvodnje i sezone (zima, proleće, leto i jesen) su pokazali visoku signifikantnu značajnost (P  lt  0,01) na sve ispitivane parametre mleka osim na mlečnu mast, ukupnu suvu materiju i ukupan broj somatskih ćelija, gde je uticaj bio signifikantan na nivou (P  lt  0,05). Statistički značajna razlika nije pronađena u ukupnom broju bakterija (kolonija) (P > 0,05). Na sastav mleka takođe utiče i veliki broj drugih faktora, stoga je za preporuku da se u ispitivanje uključe i faktori poput ishrane mlečnih krava, rase i farmskog menadžmenta.",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "Composition of raw milk from conventional and organic dairy farming, Sastav sirovog mleka dobijen u sistemu konvencionalne i organske proizvodnje",
pages = "143-133",
number = "2",
volume = "32",
doi = "10.2298/BAH1602133K"
}
Kučević, D., Trivunović, S., Bogdanović, V., Čobanović, K., Janković, D.,& Stanojević, D.. (2016). Composition of raw milk from conventional and organic dairy farming. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 32(2), 133-143.
https://doi.org/10.2298/BAH1602133K
Kučević D, Trivunović S, Bogdanović V, Čobanović K, Janković D, Stanojević D. Composition of raw milk from conventional and organic dairy farming. in Biotechnology in Animal Husbandry. 2016;32(2):133-143.
doi:10.2298/BAH1602133K .
Kučević, Denis, Trivunović, Snežana, Bogdanović, Vladan, Čobanović, Ksenija, Janković, Dobrila, Stanojević, Dragan, "Composition of raw milk from conventional and organic dairy farming" in Biotechnology in Animal Husbandry, 32, no. 2 (2016):133-143,
https://doi.org/10.2298/BAH1602133K . .
13

Progesterone concentration in milk and blood serum and reproductive efficiency of cows after Ovsynch treatment

Vuković, Dejan; Božić, Aleksandar; Relić, Renata; Stancić, Blagoje; Gvozdić, Dragan; Kučević, Denis

(Scientific Technical Research Council Turkey-Tubitak, Ankara, 2016)

TY  - JOUR
AU  - Vuković, Dejan
AU  - Božić, Aleksandar
AU  - Relić, Renata
AU  - Stancić, Blagoje
AU  - Gvozdić, Dragan
AU  - Kučević, Denis
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4150
AB  - An experiment was conducted to investigate the effects of hormonal synchronization of ovulation on progesterone concentrations in milk and blood serum and on reproductive performance. Sixty Holstein-Friesian cows averaging 8000 L over 305 days of lactation were divided into 2 groups of 30 animals. One-factor ANOVA and a t-test of progesterone concentrations in venous serum and milk revealed that the lowest concentrations of progesterone in milk (Ovsynch 5.8 + 1.0 ng/mL; control 4.5 + 0.6 ng/mL) and blood serum (Ovsynch 1.3 +/- 0.9 ng/mL; control 1.4 +/- 0.5 ng/mL) in both groups were found on the day of estrus or artificial insemination (AI) (both P  lt  0.05). Increases in the concentrations of progesterone in milk (Ovsynch 17.6 +/- 4.3 ng/mL; control 10.5 +/- 1.9 ng/mL) and blood serum (Ovsynch 3.6 +/- 1.1 ng/mL; control 4.0 +/- 1.0 ng/mL) were observed on day 7 after AI (both P  lt  0.05). Concentrations of progesterone in milk and blood serum in nonpregnant cows were reduced on day 21 after AI. Assessment of reproductive performance revealed that the application of treatment shortened the duration of the service period (Ovsynch 76 days; control 83 days) and the calving interval (Ovsynch 376 days; control 382 days).
PB  - Scientific Technical Research Council Turkey-Tubitak, Ankara
T2  - Turkish Journal of Veterinary & Animal Sciences
T1  - Progesterone concentration in milk and blood serum and reproductive efficiency of cows after Ovsynch treatment
EP  - 80
IS  - 1
SP  - 75
VL  - 40
DO  - 10.3906/vet-1505-17
ER  - 
@article{
author = "Vuković, Dejan and Božić, Aleksandar and Relić, Renata and Stancić, Blagoje and Gvozdić, Dragan and Kučević, Denis",
year = "2016",
abstract = "An experiment was conducted to investigate the effects of hormonal synchronization of ovulation on progesterone concentrations in milk and blood serum and on reproductive performance. Sixty Holstein-Friesian cows averaging 8000 L over 305 days of lactation were divided into 2 groups of 30 animals. One-factor ANOVA and a t-test of progesterone concentrations in venous serum and milk revealed that the lowest concentrations of progesterone in milk (Ovsynch 5.8 + 1.0 ng/mL; control 4.5 + 0.6 ng/mL) and blood serum (Ovsynch 1.3 +/- 0.9 ng/mL; control 1.4 +/- 0.5 ng/mL) in both groups were found on the day of estrus or artificial insemination (AI) (both P  lt  0.05). Increases in the concentrations of progesterone in milk (Ovsynch 17.6 +/- 4.3 ng/mL; control 10.5 +/- 1.9 ng/mL) and blood serum (Ovsynch 3.6 +/- 1.1 ng/mL; control 4.0 +/- 1.0 ng/mL) were observed on day 7 after AI (both P  lt  0.05). Concentrations of progesterone in milk and blood serum in nonpregnant cows were reduced on day 21 after AI. Assessment of reproductive performance revealed that the application of treatment shortened the duration of the service period (Ovsynch 76 days; control 83 days) and the calving interval (Ovsynch 376 days; control 382 days).",
publisher = "Scientific Technical Research Council Turkey-Tubitak, Ankara",
journal = "Turkish Journal of Veterinary & Animal Sciences",
title = "Progesterone concentration in milk and blood serum and reproductive efficiency of cows after Ovsynch treatment",
pages = "80-75",
number = "1",
volume = "40",
doi = "10.3906/vet-1505-17"
}
Vuković, D., Božić, A., Relić, R., Stancić, B., Gvozdić, D.,& Kučević, D.. (2016). Progesterone concentration in milk and blood serum and reproductive efficiency of cows after Ovsynch treatment. in Turkish Journal of Veterinary & Animal Sciences
Scientific Technical Research Council Turkey-Tubitak, Ankara., 40(1), 75-80.
https://doi.org/10.3906/vet-1505-17
Vuković D, Božić A, Relić R, Stancić B, Gvozdić D, Kučević D. Progesterone concentration in milk and blood serum and reproductive efficiency of cows after Ovsynch treatment. in Turkish Journal of Veterinary & Animal Sciences. 2016;40(1):75-80.
doi:10.3906/vet-1505-17 .
Vuković, Dejan, Božić, Aleksandar, Relić, Renata, Stancić, Blagoje, Gvozdić, Dragan, Kučević, Denis, "Progesterone concentration in milk and blood serum and reproductive efficiency of cows after Ovsynch treatment" in Turkish Journal of Veterinary & Animal Sciences, 40, no. 1 (2016):75-80,
https://doi.org/10.3906/vet-1505-17 . .
6
1
3
5

Proteine content in boar seminal plasma on the intensive pig production farms in Serbia

Apić, Jelena; Vakanjac, Slobodanka; Radović, I.; Kučević, Denis; Jotanović, Stoja; Kanacki, Zdenko; Stanković, Branislav

(Verlag Eugen Ulmer, 2015)

TY  - JOUR
AU  - Apić, Jelena
AU  - Vakanjac, Slobodanka
AU  - Radović, I.
AU  - Kučević, Denis
AU  - Jotanović, Stoja
AU  - Kanacki, Zdenko
AU  - Stanković, Branislav
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3847
AB  - The aim of this study was to investigate: (a) seminal plasma protein content in the Landrace (n = 38), Large White. (n = 44) and Duroc (n = 24) boars breed, as well as boars distribution according to protein content in seminal plasma, and (b) the sperm motility in the semen samples, forming from the ejaculates with high or low protein content, stored in vitro on 17 degrees C for 3 days. Not significant (p > 0.05) differences was found in seminal plasma protein content between three boar breeds. Only 31% of the 106 investigated boars had >= 3.6% protein in seminal plasma. Progressive motility was significantly higher (p  lt  0.01) in the ejaculates with high, compared to the ejaculates with low protein content (82% vs. 76%). After 3 days of storage, in the 1:4 dilution proportion, the average progressive motility was significantly (p  lt  0.01) decreased in relation to this value in native semen from the boars with high (82% to 64%), as well from the boars with low protein content in seminal plasma (76% to 48%). However, the average diluted semen progressive motility was significantly greater (p  lt  0.01) in the boars with high (64%), compared to the boars with low protein content in seminal plasma (48%). The number of good diluted semen samples (>= 65% progressive motility), was also significantly (p  lt  0.01) greater in the boars with high (41%), compared to the boars with low protein content in seminal plasma (12%).
PB  - Verlag Eugen Ulmer
T2  - Zuchtungskunde
T1  - Proteine content in boar seminal plasma on the intensive pig production farms in Serbia
EP  - 368
IS  - 5
SP  - 361
VL  - 87
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3847
ER  - 
@article{
author = "Apić, Jelena and Vakanjac, Slobodanka and Radović, I. and Kučević, Denis and Jotanović, Stoja and Kanacki, Zdenko and Stanković, Branislav",
year = "2015",
abstract = "The aim of this study was to investigate: (a) seminal plasma protein content in the Landrace (n = 38), Large White. (n = 44) and Duroc (n = 24) boars breed, as well as boars distribution according to protein content in seminal plasma, and (b) the sperm motility in the semen samples, forming from the ejaculates with high or low protein content, stored in vitro on 17 degrees C for 3 days. Not significant (p > 0.05) differences was found in seminal plasma protein content between three boar breeds. Only 31% of the 106 investigated boars had >= 3.6% protein in seminal plasma. Progressive motility was significantly higher (p  lt  0.01) in the ejaculates with high, compared to the ejaculates with low protein content (82% vs. 76%). After 3 days of storage, in the 1:4 dilution proportion, the average progressive motility was significantly (p  lt  0.01) decreased in relation to this value in native semen from the boars with high (82% to 64%), as well from the boars with low protein content in seminal plasma (76% to 48%). However, the average diluted semen progressive motility was significantly greater (p  lt  0.01) in the boars with high (64%), compared to the boars with low protein content in seminal plasma (48%). The number of good diluted semen samples (>= 65% progressive motility), was also significantly (p  lt  0.01) greater in the boars with high (41%), compared to the boars with low protein content in seminal plasma (12%).",
publisher = "Verlag Eugen Ulmer",
journal = "Zuchtungskunde",
title = "Proteine content in boar seminal plasma on the intensive pig production farms in Serbia",
pages = "368-361",
number = "5",
volume = "87",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3847"
}
Apić, J., Vakanjac, S., Radović, I., Kučević, D., Jotanović, S., Kanacki, Z.,& Stanković, B.. (2015). Proteine content in boar seminal plasma on the intensive pig production farms in Serbia. in Zuchtungskunde
Verlag Eugen Ulmer., 87(5), 361-368.
https://hdl.handle.net/21.15107/rcub_agrospace_3847
Apić J, Vakanjac S, Radović I, Kučević D, Jotanović S, Kanacki Z, Stanković B. Proteine content in boar seminal plasma on the intensive pig production farms in Serbia. in Zuchtungskunde. 2015;87(5):361-368.
https://hdl.handle.net/21.15107/rcub_agrospace_3847 .
Apić, Jelena, Vakanjac, Slobodanka, Radović, I., Kučević, Denis, Jotanović, Stoja, Kanacki, Zdenko, Stanković, Branislav, "Proteine content in boar seminal plasma on the intensive pig production farms in Serbia" in Zuchtungskunde, 87, no. 5 (2015):361-368,
https://hdl.handle.net/21.15107/rcub_agrospace_3847 .
1
2

Influence of microclimatic conditions on the daily production of dairy cows

Kučević, Denis; Plavšić, M.; Trivunović, Snežana; Radinović, M.; Bogdanović, Vladan

(Institut za stočarstvo, Beograd, 2013)

TY  - JOUR
AU  - Kučević, Denis
AU  - Plavšić, M.
AU  - Trivunović, Snežana
AU  - Radinović, M.
AU  - Bogdanović, Vladan
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3203
AB  - The aim of this paper was to determine the microclimatic conditions (ambient temperature and relative humidity) in dairy farm, as well as to evaluate the effect and significance of temperature - humidity index (THI) values on the daily milk yield. The observation of microclimatic parameters was conducted in the period from 9.03.2012 to 6.05.2012. The study included 136 Holstein Friesian cows. The estimation of the effect of THI on daily production of dairy cows was defined by applying fixed-effect statistical model. Average ambient temperature during measuring months amounted to 15.6°C (ranging from 7.2° C to 24.6°C), while the average value of relative humidity was 56.33% (ranging from 40.30% to 81.80%). During the study, the mean value of THI was 58.93 (ranging from 47.08 to 70.13) and didn't exceed the critical comfort level of 72. All tested fixed-factors were statistically affected the daily milk yield (p  lt 0.01). For each unit of increase in the value of the THI, the amount of milk decreased by 0.05344 kg. This confirmed the importance of regular recording of THI values and microclimatic conditions as a unique indicator of thermal stress in dairy farm.
AB  - Cilj ovog rada je bio da se utvrde mikroklimatski uslovi (ambijentalna temperatura i relativna vlažnosti vazduha) i ispita uticaj različitih vrednosti temperaturno - humidnog indeksa (THI) na dnevnu proizvodnju mleka muznih krava. Period posmatranja mikroklimatskih parametara je sproveden u vremenu od 9.03.2012 do 6.05.2012. Ispitivanje je obuhvatilo 136 grla holštajn frizijske rase krava. Za procenu uticaja THI na dnevnu proizvodnju mleka korišten je statistički model sa uticajima fiksnih faktora. Prosečna temperatura ambijenta u toku ogleda je iznosila 15,6°C (kretala se od 7,2° C do 24,6°C) dok je prosečna relativna vlažnost vazduha iznosila 56,33% (kretala se od 40,30% to 81,80%). Za vreme istraživanja prosečna vrednost THI je iznosila 58,93 (kretala se od 47,08 do 70,13) i nije prelazila kritičan nivo komfora od 72. Svi ispitivani fiksni faktori su statistički značajno uticali na prinos mleka (p lt 0,01). Za svaku jedinicu porasta vrednosti THI, količina mleka se smanjivala za 0,05344 kg. Potvrđena je važnost redovnog praćenja THI i mikroklimatskih uslova kao jedinstvenog pokazatelja termalne stresogenosti sredine u kojoj borave krave muzare.
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - Influence of microclimatic conditions on the daily production of dairy cows
T1  - Uticaj mikroklimatskih uslova na dnevnu proizvodnju mleka krava
EP  - 51
IS  - 1
SP  - 45
VL  - 29
DO  - 10.2298/BAH1301045K
ER  - 
@article{
author = "Kučević, Denis and Plavšić, M. and Trivunović, Snežana and Radinović, M. and Bogdanović, Vladan",
year = "2013",
abstract = "The aim of this paper was to determine the microclimatic conditions (ambient temperature and relative humidity) in dairy farm, as well as to evaluate the effect and significance of temperature - humidity index (THI) values on the daily milk yield. The observation of microclimatic parameters was conducted in the period from 9.03.2012 to 6.05.2012. The study included 136 Holstein Friesian cows. The estimation of the effect of THI on daily production of dairy cows was defined by applying fixed-effect statistical model. Average ambient temperature during measuring months amounted to 15.6°C (ranging from 7.2° C to 24.6°C), while the average value of relative humidity was 56.33% (ranging from 40.30% to 81.80%). During the study, the mean value of THI was 58.93 (ranging from 47.08 to 70.13) and didn't exceed the critical comfort level of 72. All tested fixed-factors were statistically affected the daily milk yield (p  lt 0.01). For each unit of increase in the value of the THI, the amount of milk decreased by 0.05344 kg. This confirmed the importance of regular recording of THI values and microclimatic conditions as a unique indicator of thermal stress in dairy farm., Cilj ovog rada je bio da se utvrde mikroklimatski uslovi (ambijentalna temperatura i relativna vlažnosti vazduha) i ispita uticaj različitih vrednosti temperaturno - humidnog indeksa (THI) na dnevnu proizvodnju mleka muznih krava. Period posmatranja mikroklimatskih parametara je sproveden u vremenu od 9.03.2012 do 6.05.2012. Ispitivanje je obuhvatilo 136 grla holštajn frizijske rase krava. Za procenu uticaja THI na dnevnu proizvodnju mleka korišten je statistički model sa uticajima fiksnih faktora. Prosečna temperatura ambijenta u toku ogleda je iznosila 15,6°C (kretala se od 7,2° C do 24,6°C) dok je prosečna relativna vlažnost vazduha iznosila 56,33% (kretala se od 40,30% to 81,80%). Za vreme istraživanja prosečna vrednost THI je iznosila 58,93 (kretala se od 47,08 do 70,13) i nije prelazila kritičan nivo komfora od 72. Svi ispitivani fiksni faktori su statistički značajno uticali na prinos mleka (p lt 0,01). Za svaku jedinicu porasta vrednosti THI, količina mleka se smanjivala za 0,05344 kg. Potvrđena je važnost redovnog praćenja THI i mikroklimatskih uslova kao jedinstvenog pokazatelja termalne stresogenosti sredine u kojoj borave krave muzare.",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "Influence of microclimatic conditions on the daily production of dairy cows, Uticaj mikroklimatskih uslova na dnevnu proizvodnju mleka krava",
pages = "51-45",
number = "1",
volume = "29",
doi = "10.2298/BAH1301045K"
}
Kučević, D., Plavšić, M., Trivunović, S., Radinović, M.,& Bogdanović, V.. (2013). Influence of microclimatic conditions on the daily production of dairy cows. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 29(1), 45-51.
https://doi.org/10.2298/BAH1301045K
Kučević D, Plavšić M, Trivunović S, Radinović M, Bogdanović V. Influence of microclimatic conditions on the daily production of dairy cows. in Biotechnology in Animal Husbandry. 2013;29(1):45-51.
doi:10.2298/BAH1301045K .
Kučević, Denis, Plavšić, M., Trivunović, Snežana, Radinović, M., Bogdanović, Vladan, "Influence of microclimatic conditions on the daily production of dairy cows" in Biotechnology in Animal Husbandry, 29, no. 1 (2013):45-51,
https://doi.org/10.2298/BAH1301045K . .
2

An assessment of dairy farm structure and characteristics of dairy production systems in Serbia

Bogdanović, Vladan; Djedović, Radica; Perišić, Predrag; Stanojević, Dragan; Petrović, Milun D.; Trivunović, Snežana; Kučević, Denis; Petrović, Milan M.

(Institut za stočarstvo, Beograd, 2012)

TY  - JOUR
AU  - Bogdanović, Vladan
AU  - Djedović, Radica
AU  - Perišić, Predrag
AU  - Stanojević, Dragan
AU  - Petrović, Milun D.
AU  - Trivunović, Snežana
AU  - Kučević, Denis
AU  - Petrović, Milan M.
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2899
AB  - In order to have a more precise description of dairy farm structure and characteristics of dairy production systems, as well as to assess possibilities for improving production and farming conditions in which milk production is organized, a survey based research was directed at a select group of farms across the Serbia. 1180 questionnaires have been mailed to farmers whose farms are registered for either cattle or mixed production. Questionnaire was divided into 6 sections: general information of the farm, agricultural and structural information, zootechnical information, sanitary and veterinarian information, information about education and extension, and information on the perspectives of future farming. About 59% of analyzed farms have size up to 20 ha, with average size of about 10 ha. On the other hand, about 55% farms raises up to 15 cows and heifers with average of 6 heads per farm, while 3% of farms have more than 200 cows and heifers. Over 86% of surveyed farmers intend to expand existing farm production, mainly by increasing the number of animals, stricter selection and improvement of the conditions for feeding, housing, care and milking. About 75% of farmers have expressed a positive expectation from future membership of Serbia in EU, although these expectations are not clearly defined.
AB  - U cilju preciznijeg opisa strukture mlečnih farmi i karakteristika sistema za proizvodnju mleka, kao i procene mogućnosti za unapređenje proizvodnje i farmskih uslova u kojima se proizvodnja mleka organizuje, sprovedena je anketa među poljoprivrednim proizvođačima (farmerima) širom Srbije. Ukupno je poslato 1180 anketa farmerima čije su farme registrovane za govedarsku ili mešovitu proizvodnju. Upitnik koji je poslat farmerima sastojao se iz 6 delova i obuhvatao je opšte informacije o farmi, poljoprivredne i strukturne informacije, zootehničke informacije, sanitarne i veterinarske aspekte proizvodnje, edukaciju i savetodavstvo, kao i perspektive budućeg poslovanja. Oko 59% analiziranih farmi ima veličinu do 20ha, sa prosekom od oko 10ha. Sa druge strane, na oko 55% farmi odgaja se do 15 krava i junica, sa prosekom od 6 grla po farmi. Preko 86% anketiranih farmera namerava da proširi postojeću proizvodnju i to uglavnom povećanjem broja životinja, strožijom selekcijom roditeljskih parova, kao i unapređenjem uslova ishrane, smeštaja i nege. Oko 75% anketiranih farmera izrazilo je pozitivna očekivanja od budućeg članstva Srbije u EU, iako ta očekivanja nisu uvek jasna ili precizno definisana.
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - An assessment of dairy farm structure and characteristics of dairy production systems in Serbia
T1  - Procena strukture mlečnih farmi i karakteristika sistema za proizvodnju mleka u Srbiji
EP  - 696
IS  - 4
SP  - 689
VL  - 28
DO  - 10.2298/BAH1204689B
ER  - 
@article{
author = "Bogdanović, Vladan and Djedović, Radica and Perišić, Predrag and Stanojević, Dragan and Petrović, Milun D. and Trivunović, Snežana and Kučević, Denis and Petrović, Milan M.",
year = "2012",
abstract = "In order to have a more precise description of dairy farm structure and characteristics of dairy production systems, as well as to assess possibilities for improving production and farming conditions in which milk production is organized, a survey based research was directed at a select group of farms across the Serbia. 1180 questionnaires have been mailed to farmers whose farms are registered for either cattle or mixed production. Questionnaire was divided into 6 sections: general information of the farm, agricultural and structural information, zootechnical information, sanitary and veterinarian information, information about education and extension, and information on the perspectives of future farming. About 59% of analyzed farms have size up to 20 ha, with average size of about 10 ha. On the other hand, about 55% farms raises up to 15 cows and heifers with average of 6 heads per farm, while 3% of farms have more than 200 cows and heifers. Over 86% of surveyed farmers intend to expand existing farm production, mainly by increasing the number of animals, stricter selection and improvement of the conditions for feeding, housing, care and milking. About 75% of farmers have expressed a positive expectation from future membership of Serbia in EU, although these expectations are not clearly defined., U cilju preciznijeg opisa strukture mlečnih farmi i karakteristika sistema za proizvodnju mleka, kao i procene mogućnosti za unapređenje proizvodnje i farmskih uslova u kojima se proizvodnja mleka organizuje, sprovedena je anketa među poljoprivrednim proizvođačima (farmerima) širom Srbije. Ukupno je poslato 1180 anketa farmerima čije su farme registrovane za govedarsku ili mešovitu proizvodnju. Upitnik koji je poslat farmerima sastojao se iz 6 delova i obuhvatao je opšte informacije o farmi, poljoprivredne i strukturne informacije, zootehničke informacije, sanitarne i veterinarske aspekte proizvodnje, edukaciju i savetodavstvo, kao i perspektive budućeg poslovanja. Oko 59% analiziranih farmi ima veličinu do 20ha, sa prosekom od oko 10ha. Sa druge strane, na oko 55% farmi odgaja se do 15 krava i junica, sa prosekom od 6 grla po farmi. Preko 86% anketiranih farmera namerava da proširi postojeću proizvodnju i to uglavnom povećanjem broja životinja, strožijom selekcijom roditeljskih parova, kao i unapređenjem uslova ishrane, smeštaja i nege. Oko 75% anketiranih farmera izrazilo je pozitivna očekivanja od budućeg članstva Srbije u EU, iako ta očekivanja nisu uvek jasna ili precizno definisana.",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "An assessment of dairy farm structure and characteristics of dairy production systems in Serbia, Procena strukture mlečnih farmi i karakteristika sistema za proizvodnju mleka u Srbiji",
pages = "696-689",
number = "4",
volume = "28",
doi = "10.2298/BAH1204689B"
}
Bogdanović, V., Djedović, R., Perišić, P., Stanojević, D., Petrović, M. D., Trivunović, S., Kučević, D.,& Petrović, M. M.. (2012). An assessment of dairy farm structure and characteristics of dairy production systems in Serbia. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 28(4), 689-696.
https://doi.org/10.2298/BAH1204689B
Bogdanović V, Djedović R, Perišić P, Stanojević D, Petrović MD, Trivunović S, Kučević D, Petrović MM. An assessment of dairy farm structure and characteristics of dairy production systems in Serbia. in Biotechnology in Animal Husbandry. 2012;28(4):689-696.
doi:10.2298/BAH1204689B .
Bogdanović, Vladan, Djedović, Radica, Perišić, Predrag, Stanojević, Dragan, Petrović, Milun D., Trivunović, Snežana, Kučević, Denis, Petrović, Milan M., "An assessment of dairy farm structure and characteristics of dairy production systems in Serbia" in Biotechnology in Animal Husbandry, 28, no. 4 (2012):689-696,
https://doi.org/10.2298/BAH1204689B . .
7

Evaluation of breeding values of bulls for somatic cell count in milk

Radinović, M.; Trivunović, Snežana; Kučević, Denis; Djedović, Radica; Bogdanović, Vladan

(Institut za stočarstvo, Beograd, 2011)

TY  - JOUR
AU  - Radinović, M.
AU  - Trivunović, Snežana
AU  - Kučević, Denis
AU  - Djedović, Radica
AU  - Bogdanović, Vladan
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2471
AB  - The incidence of subclinical and clinical mastitis in the mammary gland produces variety of defensive factors were nuclear leukocytes, lymphocytes and macrophages play an important role and they are marked as somatic cells. Somatic cell count depends on the type of pathogen and stage of infection. Increased number of somatic cells in milk occurs as a result of lesions in the mammary gland. Studies have shown that the somatic cells count is genetically predisposed. Although the heritability of this trait is low, using modern methods and the proper selection of work it is possible to achieve some progress. Therefore it is necessary to the selection of bulls for somatic cells, on the basis of somatic cells in milk of daughters. Data on milk yield and somatic cell count in milk of 247 cows Holstein Friesian and Simmental breed from Vojvodina province, were used to analyze the evaluation of breeding values for somatic cells in milk Average values and variability of somatic cells, milk yield, milk fat yield and protein and content of milk fat and protein were determined. The average number of somatic cells was 317 000 per ml of milk, with high variability. Average milk yield of 7 634kg with an average content and yield of milk fat from 3.74% to 285.69 kg and the average protein content and yield of 3.15% and 237.15 kg were determined. Assessment of breeding values was calculated using BLUP model of father, high variability in the assessment of bulls was found. Getting more accurate breeding values is possible using the Animal Model.
AB  - Kod pojave subkliničkog i kliničkog mastitisa mlečna žlezda produkuje mnoštvo odbrambenih faktora od kojih značajnu ulogu imaju polimorfo nuklearni leukociti, limfociti i makrofage koje označavamo kao somatske ćelije. Broj somatskih ćelija zavisi od vrste uzročnika i stadijuma infekcije. Povećan broj somatskih ćelija u mleku javlja se kao posledica lezija na mlečnoj žlezdi. Istraživanja su pokazala da je broj somatskih ćelija genetski predisponiran. Iako je heritabilnost za ovu osobinu niska, uz pomoć savremenih metoda i pravilnog selekcijskog rada moguće je postići određeni genetski napredak. Zbog toga je potrebno vršiti selekciju bikova za broj somatskih ćelija i to na osnovu broja somatskih ćelija u mleku ćerki. Podaci o mlečnosti i broju somatskih ćelija u mleku kod 247 krava holštajn-frizijske i simentalske rase sa teritorije Vojvodine, korišćeni su za analizu ocene oplemenjivačke vrednosti za broj somatskih ćelija u mleku krava. Izračunate su prosečne vrednosti i varijabilnost broja somatskih ćelija, prinosa mleka, prinosa mlečne masti i proteina i sadržaja mlečne masti i proteina. Prosečan broj somatskih ćelija u ml iznosio je 317 000, sa velikom varijabilnošću. Utvrđen je prosečan prinos mleka od 7634 kg uz prosečan sadržaj i prinos mlečne masti od 3,74% i 285,69kg i prosečan sadržaj i prinos proteina od 3,15% i 237,15 kg. Ocena oplemenjivačke vrednosti je izračunata primenom BLUP modela oca, utvrđena je velika varijabilnost u oceni priplodnjaka. Dobijanje preciznije oplemenjivačke vrednosti moguće je primenom Animal Modela.
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - Evaluation of breeding values of bulls for somatic cell count in milk
T1  - Ocena oplemenjivačke vrednosti bikova za broj somatskih ćelija u mleku
EP  - 1066
IS  - 3
SP  - 1059
VL  - 27
DO  - 10.2298/BAH1103059R
ER  - 
@article{
author = "Radinović, M. and Trivunović, Snežana and Kučević, Denis and Djedović, Radica and Bogdanović, Vladan",
year = "2011",
abstract = "The incidence of subclinical and clinical mastitis in the mammary gland produces variety of defensive factors were nuclear leukocytes, lymphocytes and macrophages play an important role and they are marked as somatic cells. Somatic cell count depends on the type of pathogen and stage of infection. Increased number of somatic cells in milk occurs as a result of lesions in the mammary gland. Studies have shown that the somatic cells count is genetically predisposed. Although the heritability of this trait is low, using modern methods and the proper selection of work it is possible to achieve some progress. Therefore it is necessary to the selection of bulls for somatic cells, on the basis of somatic cells in milk of daughters. Data on milk yield and somatic cell count in milk of 247 cows Holstein Friesian and Simmental breed from Vojvodina province, were used to analyze the evaluation of breeding values for somatic cells in milk Average values and variability of somatic cells, milk yield, milk fat yield and protein and content of milk fat and protein were determined. The average number of somatic cells was 317 000 per ml of milk, with high variability. Average milk yield of 7 634kg with an average content and yield of milk fat from 3.74% to 285.69 kg and the average protein content and yield of 3.15% and 237.15 kg were determined. Assessment of breeding values was calculated using BLUP model of father, high variability in the assessment of bulls was found. Getting more accurate breeding values is possible using the Animal Model., Kod pojave subkliničkog i kliničkog mastitisa mlečna žlezda produkuje mnoštvo odbrambenih faktora od kojih značajnu ulogu imaju polimorfo nuklearni leukociti, limfociti i makrofage koje označavamo kao somatske ćelije. Broj somatskih ćelija zavisi od vrste uzročnika i stadijuma infekcije. Povećan broj somatskih ćelija u mleku javlja se kao posledica lezija na mlečnoj žlezdi. Istraživanja su pokazala da je broj somatskih ćelija genetski predisponiran. Iako je heritabilnost za ovu osobinu niska, uz pomoć savremenih metoda i pravilnog selekcijskog rada moguće je postići određeni genetski napredak. Zbog toga je potrebno vršiti selekciju bikova za broj somatskih ćelija i to na osnovu broja somatskih ćelija u mleku ćerki. Podaci o mlečnosti i broju somatskih ćelija u mleku kod 247 krava holštajn-frizijske i simentalske rase sa teritorije Vojvodine, korišćeni su za analizu ocene oplemenjivačke vrednosti za broj somatskih ćelija u mleku krava. Izračunate su prosečne vrednosti i varijabilnost broja somatskih ćelija, prinosa mleka, prinosa mlečne masti i proteina i sadržaja mlečne masti i proteina. Prosečan broj somatskih ćelija u ml iznosio je 317 000, sa velikom varijabilnošću. Utvrđen je prosečan prinos mleka od 7634 kg uz prosečan sadržaj i prinos mlečne masti od 3,74% i 285,69kg i prosečan sadržaj i prinos proteina od 3,15% i 237,15 kg. Ocena oplemenjivačke vrednosti je izračunata primenom BLUP modela oca, utvrđena je velika varijabilnost u oceni priplodnjaka. Dobijanje preciznije oplemenjivačke vrednosti moguće je primenom Animal Modela.",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "Evaluation of breeding values of bulls for somatic cell count in milk, Ocena oplemenjivačke vrednosti bikova za broj somatskih ćelija u mleku",
pages = "1066-1059",
number = "3",
volume = "27",
doi = "10.2298/BAH1103059R"
}
Radinović, M., Trivunović, S., Kučević, D., Djedović, R.,& Bogdanović, V.. (2011). Evaluation of breeding values of bulls for somatic cell count in milk. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 27(3), 1059-1066.
https://doi.org/10.2298/BAH1103059R
Radinović M, Trivunović S, Kučević D, Djedović R, Bogdanović V. Evaluation of breeding values of bulls for somatic cell count in milk. in Biotechnology in Animal Husbandry. 2011;27(3):1059-1066.
doi:10.2298/BAH1103059R .
Radinović, M., Trivunović, Snežana, Kučević, Denis, Djedović, Radica, Bogdanović, Vladan, "Evaluation of breeding values of bulls for somatic cell count in milk" in Biotechnology in Animal Husbandry, 27, no. 3 (2011):1059-1066,
https://doi.org/10.2298/BAH1103059R . .

The effect of the farm size on milk traits of cows

Kučević, Denis; Trivunović, Snežana; Radinović, M.; Plavšić, M.; Skalicki, Z.; Perišić, Predrag

(Institut za stočarstvo, Beograd, 2011)

TY  - JOUR
AU  - Kučević, Denis
AU  - Trivunović, Snežana
AU  - Radinović, M.
AU  - Plavšić, M.
AU  - Skalicki, Z.
AU  - Perišić, Predrag
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2552
AB  - Objective of this study was to analyze the effect of the dairy farm on milk traits of cows in Vojvodina. The research was carried out on small farms with 10 to 20 cows, medium farms with 20 to 50 cows, and large farms with over 50 dairy cows. The study included registered animals of Simmental (SM) and Holstein-Friesian breed (HF; including Red Holstein) in the first lactation for traits of milk yield and yield and content of milk fat. Total of 1323 first lactations were analyzed. The average milk yield (both breeds) in the first lactation of 305 days was 6295 kg of milk with 234,3 kg of milk fat and average milk fat content of 3,74%. Milk performance of cows varied significantly (CV=22,9% and SD=1447,8), as well as milk fat yield (CV=21,6% and SD=50,8). Large farms produced in average 6534 kg of milk, medium farms 6347kg and small farms 4717kg. Size of the farm exhibited significantly high effect on all observed traits, and the tendency was that farms with higher number of animals realize also higher average of production. Farm management and various breeding-zootechnical conditions present on farms had significant effect on milk performance of cows.
AB  - Cilj rada je da se ispita uticaj veličine govedarske farme na osobine mlečnosti u Vojvodini. U odnosu na veličinu farme, ispitivanje je sprovedeno na malim farmama sa 10 do 20 krava, srednje velikim od 20 do 50 i velikim sa preko 50 krava. Ispitivanje je obuhvatilo umatičena grla simentalske (SM) i holštajnfrizijske rase (HF; uključujući i crveni holštajn) u prvoj laktaciji za osobine prinosa mleka, mlečne masti i sadržaja mlečne masti. Ukupno je analizirano 1323 prvih laktacija. Prosečna mlečnost krava (obe rase) u prvoj laktaciji za 305 dana je iznosila 6295 kg mleka sa 234,3 kg mlečne masti i prosečnim sadržajem masti od 3,74%. Mlečnosti krava je značajno varirala (CV=22,9% i SD=1447,8) kao i prinos mlečne masti (CV=21,6% i SD=50,8). Velike farme su prosečno proizvele 6534 kg, srednje 6347 kg i male 4717 kg. Veličina farme je ispoljila signifikantno visok uticaj na sve posmatrane osobine a tendencija je da se na farmama sa većim brojem grla ostvaruje prosečno veća proizvodnja. Farmski menadžment i različiti odgajivačko zootehnički uslovi na farmama su ostvarili značajan uticaj na mlečnost krava.
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - The effect of the farm size on milk traits of cows
T1  - Uticaj veličine farmi na osobine mlečnosti krava
EP  - 958
IS  - 3
SP  - 951
VL  - 27
DO  - 10.2298/BAH1103951K
ER  - 
@article{
author = "Kučević, Denis and Trivunović, Snežana and Radinović, M. and Plavšić, M. and Skalicki, Z. and Perišić, Predrag",
year = "2011",
abstract = "Objective of this study was to analyze the effect of the dairy farm on milk traits of cows in Vojvodina. The research was carried out on small farms with 10 to 20 cows, medium farms with 20 to 50 cows, and large farms with over 50 dairy cows. The study included registered animals of Simmental (SM) and Holstein-Friesian breed (HF; including Red Holstein) in the first lactation for traits of milk yield and yield and content of milk fat. Total of 1323 first lactations were analyzed. The average milk yield (both breeds) in the first lactation of 305 days was 6295 kg of milk with 234,3 kg of milk fat and average milk fat content of 3,74%. Milk performance of cows varied significantly (CV=22,9% and SD=1447,8), as well as milk fat yield (CV=21,6% and SD=50,8). Large farms produced in average 6534 kg of milk, medium farms 6347kg and small farms 4717kg. Size of the farm exhibited significantly high effect on all observed traits, and the tendency was that farms with higher number of animals realize also higher average of production. Farm management and various breeding-zootechnical conditions present on farms had significant effect on milk performance of cows., Cilj rada je da se ispita uticaj veličine govedarske farme na osobine mlečnosti u Vojvodini. U odnosu na veličinu farme, ispitivanje je sprovedeno na malim farmama sa 10 do 20 krava, srednje velikim od 20 do 50 i velikim sa preko 50 krava. Ispitivanje je obuhvatilo umatičena grla simentalske (SM) i holštajnfrizijske rase (HF; uključujući i crveni holštajn) u prvoj laktaciji za osobine prinosa mleka, mlečne masti i sadržaja mlečne masti. Ukupno je analizirano 1323 prvih laktacija. Prosečna mlečnost krava (obe rase) u prvoj laktaciji za 305 dana je iznosila 6295 kg mleka sa 234,3 kg mlečne masti i prosečnim sadržajem masti od 3,74%. Mlečnosti krava je značajno varirala (CV=22,9% i SD=1447,8) kao i prinos mlečne masti (CV=21,6% i SD=50,8). Velike farme su prosečno proizvele 6534 kg, srednje 6347 kg i male 4717 kg. Veličina farme je ispoljila signifikantno visok uticaj na sve posmatrane osobine a tendencija je da se na farmama sa većim brojem grla ostvaruje prosečno veća proizvodnja. Farmski menadžment i različiti odgajivačko zootehnički uslovi na farmama su ostvarili značajan uticaj na mlečnost krava.",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "The effect of the farm size on milk traits of cows, Uticaj veličine farmi na osobine mlečnosti krava",
pages = "958-951",
number = "3",
volume = "27",
doi = "10.2298/BAH1103951K"
}
Kučević, D., Trivunović, S., Radinović, M., Plavšić, M., Skalicki, Z.,& Perišić, P.. (2011). The effect of the farm size on milk traits of cows. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 27(3), 951-958.
https://doi.org/10.2298/BAH1103951K
Kučević D, Trivunović S, Radinović M, Plavšić M, Skalicki Z, Perišić P. The effect of the farm size on milk traits of cows. in Biotechnology in Animal Husbandry. 2011;27(3):951-958.
doi:10.2298/BAH1103951K .
Kučević, Denis, Trivunović, Snežana, Radinović, M., Plavšić, M., Skalicki, Z., Perišić, Predrag, "The effect of the farm size on milk traits of cows" in Biotechnology in Animal Husbandry, 27, no. 3 (2011):951-958,
https://doi.org/10.2298/BAH1103951K . .
3