Genetic trend of functional productive life in the population of black and white cattle in Serbia
2018
Аутори
Stanojević, DraganDjedović, Radica
Bogdanović, Vladan
Raguz, Nikola
Kučević, Denis
Popovac, Mladen
Stojić, Petar
Samolovac, Ljiljana
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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.
Кључне речи:
functional longevity / genetic trend / black and white cattleИзвор:
Genetika, 2018, 50, 3, 855-862Издавач:
- Društvo genetičara Srbije, Beograd
Финансирање / пројекти:
- Оптимизација технолошких поступака и зоотехничких ресурса на фармама у циљу унапређења одрживости производње млека (RS-MESTD-Technological Development (TD or TR)-31086)
DOI: 10.2298/GENSR1803855S
ISSN: 0534-0012
WoS: 000457340900009
Scopus: 2-s2.0-85059556735
Институција/група
Poljoprivredni fakultetTY - 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 . .