HE FEATURES OF THE DISPLAY OF THE REPRODUCTIVE CAPACITIES OF BLACK-MOTLEY CATTLE OF THE DIFFERENT GENESIS
The results of the conducted analysis of indexes of reproductive capacities of black-motley cattle of different genesis testify to that first-calving and were to the adult cows of Holstein genesis peculiarly decline of indexes of reproductive qualities on comparison from the coevals of Dutch genesis. So in the conditions of high zootechnics background heifers related to the lines of Holstein genesis, differed by the more early age of the first insemination (495 days) and first calving (a 744 day). However, and first-calving, and the adult cows of the given group were characterized by the greater duration of servis- and intercalving periods (125; 138 and 404; 417 days accordingly), and also more high index of insemination (2,02 and 2,04 accordingly), than is not dependency to the coevals of Dutch lines upon the zootechnics background. Conducted researches on the decision of reproductive qualities of bulls, showed, that the bulls belonging to the lines of Dutch genesis differed by the large volume of ejaculate and more high percent of fecundate uterine livestock from the first insemination - 5,62 ml and 67,3% accordingly. At the same time, the bulls of lines of Holstein genesis had for certain large concentration of spermatozoon's in ejaculate - 1,14 mlrd/ml.