Influence of vitamin-mineral premix on milk productivity indicators of cows

The key to high milk productivity of cows is balanced scientifically based feeding. In order to achieve high productivity of animals, it is necessary to balance the ration taking into account the main nutrients. Currently, both on the Russian and foreign markets there are many biologically active feed additives that help optimize rations and introduce them into the production process. Based on the above, the relevance of the study of the effectiveness of feed additives is beyond doubt. The purpose of the research was to establish the effectiveness of using the premix Kaufit Extra in feeding of lactating cows. The studies were carried out on a dairy farm on holsteinized cows of Black-and-White breed in the Promyshlennovsky district of the Kemerovo region. In order to carry out a scientific and economic experiment experimental and control groups of 10 heads in each were formed using the method of groups of analogues. The difference was that the cows of the experimental group were supplemented with the vitamin and mineral premix Kaufit Extra in the amount of 80 g/head/day in addition to the main ration. The study showed that the milk productivity of cows in terms of average daily milk yield reliably exceeded the indicators of cows in the control group by 7.3 % (p ≤ 0.001) or 1.8 kg, and milk yield over the experimental period (60 days) by 7.3 % or 108.0 kg (p ≤ 0.001). In the experimental group the milk fat yield exceeded the same indicator in the control group by 5.5 kg (p ≤ 0.05) or 10.3 %, and in terms of milk protein content by 5.0 kg (p ≤ 0.01) or 10.8 %. The level of milk production profitability in the experimental group of cows exceeded the control group indicator by 11.9 abs.%.