Useful features of dairy cows and their connection with productive longevity

NP Mazur, YI Fedorovych… - Animal Breeding and …, 2018 - abg-journal.com
Animal Breeding and Genetics, 2018abg-journal.com
A fundamental genetic improvement of domestic dairy breeds is carried out by using the
gene pool of the best foreign breeds, in particular Holstein. This approach has greatly
improved the milk productivity of cows, but has led to a significant deterioration in
reproduction, longevity, product quality, general animal health etc. Taking into account that
the increase of the milk productivity of cows leads to a shortening of their use, this problem
will only become aggravated over time. Therefore, it is now necessary to direct scientific …
Abstract
A fundamental genetic improvement of domestic dairy breeds is carried out by using the gene pool of the best foreign breeds, in particular Holstein. This approach has greatly improved the milk productivity of cows, but has led to a significant deterioration in reproduction, longevity, product quality, general animal health etc. Taking into account that the increase of the milk productivity of cows leads to a shortening of their use, this problem will only become aggravated over time. Therefore, it is now necessary to direct scientific research into a comprehensive assessment of animals taking into account the signs of lifelong productivity. In view of the above, the purpose of our research was to study the economic utility signs of dairy cows and their relationship with productive longevity.
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