The evaluation of breeding value of Simmental bulls for milk performance in Serbia
2011
Pantelić, V., Institute for Animal Husbandry, Belgrade-Zemun (Serbia) | Plavšić, M., Faculty of Agriculture, Novi Sad (Serbia) | Trivunović, S., Faculty of Agriculture, Novi Sad (Serbia) | Aleksić, S., Institute for Animal Husbandry, Belgrade-Zemun (Serbia) | Sretenović, Lj., Institute for Animal Husbandry, Belgrade-Zemun (Serbia) | Ostojić-Andrić, D., Institute for Animal Husbandry, Belgrade-Zemun (Serbia) | Nikšić, D., Institute for Animal Husbandry, Belgrade-Zemun (Serbia)
The basis for selection work is knowledge of the quality of bull sires used for conception, as well as how the major traits are passed on to the progeny. BLUP method (Best Linear Unbiased Prediction) is the basis of the most favourable solution for evaluation of additive gene value in cattle production, and it is implemented in various variants depending on the structure of data used. This research included 2.121 Simmental first cavers under control, with lactations completed within one year. All first calvers were located on holdings of individual agricultural producers on the territory of the Republic of Serbia. Evaluation of the bull breeding value for lactation duration, milk production, milk fat yield, yield of 4% FCM and percentage of milk fat, was carried out by using the mixed model (BLUP), the calculation included random effect of bull sire and fixed effect of the region, year and season of calving. In this study, bull sires which had in two or three regions over 20 daughters – first calvers of Simmental breed. Number of first calving heifers ranged from 22 to 215 animals per bull sire. By using BLUP method in evaluation of breeding value of bulls in terms of yield of milk, milk fat, content of milk fat and 4% FCMI and by ranking, results were obtained showing superiority and inferiority of breeding males.
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