Age dynamics of reproductive ability of dairy and combined breeds in the western region of Ukraine
2015
FEDOROVYCH, V.
There are data of reproductive ability of dairy breeds (Ukrainian Black and White, Ukrainian Red and White, Ayrshire cows and Red Polish) and combined breeds (Simmental cattle and Brown Carpathian cattle) in Western Ukraine. It was established that Ayrshire cows from all dairy breeds had the youngest first breeding and first calving, the shortest duration of pregnancy, service cattle amoung the combined breeds had the youngest first breeding and first calving, and Brown Carpathian cattle had shorter service and calv- ing interval and higher coefficient of reproductive ability
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