Evaluation of breeding value of bulls on the basis of daily yields
2003
Perz, W.P. | Sobek, Z. (Poznan Agricultural University (Poland). Dept. of Genetics and Animal Breeding)
Breeding value was evaluated on the basis of productivity of their daughters. The investigations was performed by employing milk yields obtained from a daily yields that come from a milking parlour of a herd of cb crossbreeds with a high hf upgrade in Czerwona Wies. The assessment was performed for 100 and 200-day of productivity from the day of calving. In both cases, productivity estimations gave similar results. The assessment was also carried out for 100 and 200-day productivity values obtained in the Ferma system. The results obtained were differed from each other. The evaluations obtained from data concerning daily milk yields are comparable with the ranking of productivity. It indicates that the results of daily milk yields obtained even from 100-day productivity had been useful as an element of a bull evaluation. Small differences between obtained evaluation for the 100 and the 200 daily milking can be attributed to a small number of samples
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