EFFICIENCY OF SELECTION OF COWS UKRAINIAN RED DAIRY BREED BY ORIGIN
Studies have established that the most effective level of intensity of animal selection by origin is selection, which does not exceed 30% of the culling of cows from the herd. With such intensity of selection, the annual genetic progress of productivity is raised to 198.8 kg of milk, with a reduction in the butterfat yield of 0.02% and the need for repair young growth within 234 heads, which corresponds to the possibilities of own growing volumes.