DIGESTIBILITY AND ABSORPTION OF NUTRIENTS BY YOUNG CATTLE AT INCLUSION OF COMPLEX FEED ADDITIVES INTO THE DIETS IN THE CONDITIONS OF YAKUTIA

It is known that cattle with a high genetic potential of productivity cannot fully realize it in the conditions of Yakutia. This is facilitated by many factors, especially it is necessary to highlight the basic feeds, which are poorly provided with nutrients and minerals. Therefore, the development of technologies and methods to increase productivity of cattle through inclusion of complex feed additives from natural resources in their diets is of scientific and practical importance for the conditions of risky agriculture. In this regard, the goal was to study effect of complex feed additives from local natural raw materials on the digestibility and metabolism of young cattle. The studies used methods generally accepted in zootechnical practice, setting up for the experiment was carried out according to the method (M.F. Tomme, 1969). Experiments were conducted on 3 groups of young cattle. Each group has 10 heads selected by the method of analogues. When analyzing the data on the digestibility and absorption of nutrients, it was found that the animals of the experimental groups digested nutrients better compared to the animals of the control group: dry matter by 1.44% and 0.1%, organic matter by 2.0% and 1.65%, crude protein by 1.68% and 1.16%, crude fat by 2.28% and 1.33%, crude fiber by 2.48% and 2.04%, and nitrogen-free extractives by 1.88% and 1.61%. At the same time, the animals of the experimental groups used nitrogen better compared to the control group by 2,28% and 1,05%. The study of the biochemical composition of animal blood showed that complex feed additives are harmless. Thus, the inclusion of complex feed additives in the diets of young cattle can improve the indicators of digestibility and the degree of use of nutrients in the conditions of Yakutia.