Сommtrcial user of cows and causes of Ukrainian-out black and white dairy cattle by absorbing crossbred
Abstract
The influence of the part of Holstein inheritance on parameters of productive use and causes of premature culling of Ukrainian Black-and-White dairy breed cows were researched. When the part of Holstein inheritance grows, at
the same time there is a tendency to reduce the length of cows’ produ ctive use, the duration of their use in the herd, the milk yield per one day of life and the coefficient of productive use. Higher parameters of productive use were detected in the group of cows with the part of Holstein inheritance 75,0−99,9 %. The most often causes of premature culling of Ukrainian Black -and-White dairy breed cows were gynecological diseases, diseases of the udder and the digestive system.
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