Comparing the two cows shows that in the second half of lactation increases the fat content in milk, the highest percentage is at 8-10 months of lactation, which indicates an excessive amount of energy rations and can lead to increased live weight of cows and their infertility, which is undesirable. Hopes are higher in groups of cows kept in loose housing in deep bedding-8866 kg

per lactation, which is 292 kg more milk compared to loose housing in boxes. In order to increase the conditions of milk production there is a comprehensive approach to solving the following problems: the intensity of the herd of dairy cows 3-4 years, to reduce the level of infertility of first-borns to use directed breeding heifers and transfer them to insemination at 19 months, tested for their own milk productivity of first-born cows that are suitable for industrial technology. It is established that the composition of milk is significantly influenced by the level and completeness of feeding cows. Feeding green mass of legumes or cereal-legume mixtures increases the fat content of milk by 0.15-0.3% compared to the green mass of cereals, which is confirmed not only by lactation but also by the season. Studies have shown that increasing the fat content of Ukrainian black-and-white dairy cows can be achieved not only by breeding for fat milk, but also by regulating calves, preference should be given to: spring calving, higher fattening cows and balanced feeding.