INFLUENCE OF BALANCING SUPPLEMENTS ON THE COWS’ MILKING PRODUCTIVITY DURING THE MILKING PERIOD
A scientific and economic experiment was carried out on the basis of AO Pedigree Reproducer “Chistyunsky” in the Topchikhinsky district of the Altai Territory. The experiment was conducted on 14 red-motley breed animals during the milking period by the method of groups and periods. In the first period, the nutritional value of the diet consisted of 213.63 MJ of metabolizable energy, 21.6 kg of dry matter, 3361.2 g of crude protein, 5249.96 g of crude fiber, 3553.5 g of starch. In the second experimental period, the nutritional value of the diet was 251.3 MJ of metabolizable energy, 23.4 kg of dry matter, 3842.52 g of crude protein, 5390.87 g of crude fiber, 4102.14 g of starch. After analyzing the nutritional value of the ration, it became obvious that the level of feeding in the second experimental period was higher than in the first one in the content of metabolizable energy by 37.67 MJ, crude protein by 481.32 g, crude fiber by 140.91 g and starch by 548.64 g. In the second experimental period, the inclusion in the lactating cows diet of enriched compound fodder to the main feed mixture of the ration contributed to the formation of higher milk productivity during the period of the experiment (in 2020). The use of energy, protein, mineral and vitamin supplements, including rapeseed cake, protected fat Nutrakor-84, supplement Rumen Buffer and vitamin Kaufit Extra and mineral complex in the diet of lactating cows during the milking period contributes to an increase in milk productivity by 42.8%, fat by 4.3 relative %, protein by 8.9 relative %.