DEPENDENCE OF UKRAINIAN DAIRY COWS PRODUCTIVITY OF BLACK AND WHITE DAIRY BREED OF THEIR REPRODUCTIVE ABILITY
We conducted the results of studies according to milk production of cows Ukrainian Black Pied dairy breed on their reproductive capacity, in particular the duration of the dry, service and lately periods. It was found that the milk production of the cows have a significant impact indicators of their reproductive capacity. The highest milk yield is obtained from cows with the duration of the dry period in the range of 56-65 days, the service period - 101-120 days, lately period - 386-405 days. The correlation coefficients between the indicators of milk production and the duration of the dry, service and lately periods, depending on lactation, were, respectively, in the range r=0,110-0,218, r=0,109-0,270 and 0,101-0,270. The share of influence of the dry period of cows on their milk production performance (milk yield, fat content and the amount of milk fat) was in the range of 10,14-15,61%, service period - within 9,14-28,44% and lately period - within 10,33-26,15%.