Efficiency of ayrshirized red range grain-fed cattle taking into account genetic and paratypical factors to increase milk production at a breeding farm

The article analyses the efficiency of using the Ayrshire breed gene pool to improve the red range grain-fed cattle. The results have been presented and the corresponding conclusions on the further use of crossing red range grain-fed cattle with the Ayrshire breed semen for quality indicators of milk productivity under the conditions of a breeding farm have been drawn. The dependence of milk productivity and live weight of first-calf heifers at different age periods has been determined.