Determination of influence of age of cows on the breeding value of bulls tested on the basis of milk productivity of their primipara daughters
1985
Filistowicz, A. | Nowicki, B. | Pawlina, E. | Zwolinska-Bartczak, I. | Zuk, B. (Akademia Rolnicza, Wroclaw (Poland). Katedra Genetyki i Ogolnej Hodowli Zwierzat)
No statistically significant differences between breeding value of the bulls, as evaluated on the basis of milk productivity, productivity of fat and fat contents in the milk of daughters of young and old mothers had been found. There was neither need for proportional distribution of semen from the tested bull for insemination of young and old cows nor for use the correction factors for breeding value of bulls
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