Evaluation of highly productive families of the Ukrainian Red Dairy Breed

The results of estimation of dairy effi ciency and reproductive ability of highly productive families of cows of the Ukrainian Red Dairy Breed are given. It was found that families are characterized by high yield of milk, fat in milk and optimal reproductive ability. It has been determined that the high dairy families come from Purga which is number 5842, Pilotka is 4838 and Bistra is 1988, and Bistra has the fat content in milk 1988, Liana has 02900 and Rozetka has 2888. The best families which combine high milk yield and fat content in milk are the Bistra family is 1988 and the Pilotka is 4838. The level of phenotypic variability of selection traits is estimated.