Influence of a feed additive Spectrovit on milk productivity of lactating cows

In current animal husbandry the use of environmentally friendly biologically active feed additives in animal diets is becoming increasingly important. This is due to the growing demand for healthy products and the desire to minimize the negative impact on the environment. Biologically active feed additives unlike chemical stimulants act gently, promoting the natural improvement of biochemical, hematological and productive indicators of animals. The purpose of the research was to track the change in milk productivity in lactating cows when feeding the biologically active additive Spectrovit. The results of scientific and economic experiment carried out at an agricultural enterprise in the Chelyabinsk region on three groups of lactating cows of holsteinized Black-and-White breed using the feed additive Spectrovit have been presented in the article. In order to carry out the experiment three groups of lactating cows were formed. The 1st control group received the basic farm ration; the cows of the 2nd experimental group were supplemented with Spectrovit 10 g/head/day, and cows of the 3rd experimental group were supplemented by Spectrovit 15 g/head/day. During the research the optimal dosage of the feed additive in the rations of lactating cows was determined and their milk productivity was analyzed. During the period of the scientific and farm experiment under the influence of the feed additive Spectrovit from cows of the 2nd experimental group received 198.2 kg more milk (p < 0.001) or 3.8 %, and the 3rd experimental group by 405.6 kg more milk (p < 0.001) or 7.7 % compared to the cows of the 1st control group. A higher yield of milk fat and protein was established in the experimental groups, the differences were statistically significant. It was established that the feed additive Spectrovit at a dose of 15 g/head/day had the most positive effect on milk productivity and physicochemical parameters of cows’ milk.