Studies conducted on animals Ukrainian black and white dairy cattle in the "Milk River" farm in the Sokal and Brody offices breeding reproducers "Breeder" Lviv region and plant breeding "Yamnytsya" Ivano-Frankivsk region. Was established that milk yield of Ukrainian black-white cows depends on their mother's milk yield. The correlation coefficients between the value of yield mothers and daughters in accordance with different farms, level of milk yields and lactation were -0,312 – 0,626; in accordance with mothers milk yield and milk fat of their daughters were -0,616 – 0,559; in accordance with mothers milk yield and number of milk fat in their daughters were -0,263 – 0,621. Clear action law regression of milk yields in highly productive cows descendants was found. Daughters of highly productive cows are not reached of parameters of their mothers, but exceeded productivity of daughters from low productive cows.