GENETIC TREND OF FUNCTIONAL PRODUCTIVE LIFE IN THE POPULATION OF BLACK AND WHITE CATTLE IN SERBIA
Autori
Stanojević, DraganĐedović, Radica
Bogdanović, Vladan
Raguž, Nikola
Kučević, Denis
Popovac, Mladen
Stojić, Petar
Samolovac, Ljiljana
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
This research was conducted with the aim оf 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.
Ključne reči:
functional longevity / genetic trend / black and white cattleIzvor:
Genetika, 09-2018, 50, 3, 855-Finansiranje / projekti:
- Optimizacija tehnoloških postupaka i zootehničkih resursa na farmama u cilju unapređenja održivosti proizvodnje mleka (RS-MESTD-Technological Development (TD or TR)-31086)
Institucija/grupa
RIStocarTY - JOUR AU - Stanojević, Dragan AU - Đedović, Radica AU - Bogdanović, Vladan AU - Raguž, Nikola AU - Kučević, Denis AU - Popovac, Mladen AU - Stojić, Petar AU - Samolovac, Ljiljana PY - 2018-09 UR - http://r.istocar.bg.ac.rs/handle/123456789/917 AB - This research was conducted with the aim оf 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. T2 - Genetika T1 - GENETIC TREND OF FUNCTIONAL PRODUCTIVE LIFE IN THE POPULATION OF BLACK AND WHITE CATTLE IN SERBIA VL - 50 IS - 3 SP - 855 DO - 10.2298/GENSR1803855S ER -
@article{ author = "Stanojević, Dragan and Đedović, Radica and Bogdanović, Vladan and Raguž, Nikola and Kučević, Denis and Popovac, Mladen and Stojić, Petar and Samolovac, Ljiljana", year = "2018-09", abstract = "This research was conducted with the aim оf 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.", journal = "Genetika", title = "GENETIC TREND OF FUNCTIONAL PRODUCTIVE LIFE IN THE POPULATION OF BLACK AND WHITE CATTLE IN SERBIA", volume = "50", number = "3", pages = "855", doi = "10.2298/GENSR1803855S" }
Stanojević, D., Đedović, R., Bogdanović, V., Raguž, N., Kučević, D., Popovac, M., Stojić, P.,& Samolovac, L.. (2018-09). GENETIC TREND OF FUNCTIONAL PRODUCTIVE LIFE IN THE POPULATION OF BLACK AND WHITE CATTLE IN SERBIA. in Genetika, 50(3), 855. https://doi.org/10.2298/GENSR1803855S
Stanojević D, Đedović R, Bogdanović V, Raguž 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. doi:10.2298/GENSR1803855S .
Stanojević, Dragan, Đedović, Radica, Bogdanović, Vladan, Raguž, 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 (2018-09):855, https://doi.org/10.2298/GENSR1803855S . .