VITAMIN AND MINERAL SUPPLEMENTS FEEDING EFFECT ON MILK PRODUCTIVITY OF COWS

The purpose of research is to study the effect of feeding various vitamin and mineral supplements as part of the diet of dry cows on the subsequent milk production of animals. Objectives: to determine the most effective vitamin and mineral supplement used when feeding dry cows, to study the effect of feeding these supplements on the milk productivity of milking cows. Research was carried out on the basis of the PZ Komsomolskoe in the Altai Region in 2022 on black-and-white cows during the dry period. Using the analogue method, three groups of animals of 10 animals each were formed. According to the experimental scheme, the cows of the control group received the main diet of the farm; the cows of the experimental groups were fed 100 g per head per day of Kaufit Dry Extra and Kaufit Dry Complete as part of the diet. It was found that the average daily milk yield of cows of the second experimental group that received the vitamin and mineral supplement Kaufit Dry Complete was 23 % higher than that of animals in the control group (without supplement) (p < 0.05). The cows of the first experimental group (Kaufit Dry Extra) produced 5 kg (4 %) more milk fat than the analogues in the control group. The amount of milk protein in experimental group II, whose animals were fed Kaufit Dry Complete at a dosage of 100 g per head per day, increased by 16 kg (22 %) compared to cows in the control group.