THE CONNECTION BETWEEN THE MAIN ECONOMICALLY USEFUL TRAITS OF BLACK-MOTLEY CATTLE OF DIFFERENT GENEALOGICAL GROUPS

The article is devoted to the study of growth performance of heifers of different lines Holstein cattle black-motley suit in different age periods, age of their first insemination and subsequent milk production. Revealed different correlative connection between economic useful traits in black pied Holstein cattle depending on the linear facilities, where bonds were characterized by indicators of the descendants of the line of Rikus.