THE RESULTS OF BREEDING WORK IN THE HERD OF COWS OF JSC RASSVET YUG IN THE UST-LABINSK DISTRICT
The article provides a comparative analysis of economic indicators of productivity of cows on the farm for a number of years. There was an improvement in milk yield by 23.6%, calf yield - 8.6%, profitability from 20.7% to 26.9%. The main economic indicators indicate that milk production is effective on the farm. The growth intensity of the heifers of the RS line was greater than that of the peers of the VBA line. A general trend of increasing milk yield from the first lactation to the third was established, however, in cows of the RS line, the increase was 977 kg (10.8%), and in BBA - 742 kg (8.3%). The content of fat and protein in milk differed slightly both in lactation and linear affiliation of cows. Thus, the use of bulls of different lines gives positive results to increase the milk productivity of cows; however, cows of the RS line are superior in milk yield to analogues of the VBA line