Reproductive function and milk yield in cows of different genotypes and generations
Submitted by Гость (not verified) on Tue, 09/10/2024 - 22:08The paper presents some material on the extensive use of the Holstein breed in the Syrian Arab Republic to improve local breeds. The results indicate a positive effect of Holstein crossing with indigenous breeds of Shami and Okshi. Milk productivity of crossbred animals has doubled. Crossbred cows of different genotypes and generations have a greater live weight at birth than local breeds.