Purpose. To investigate the effect of fumaric and lactic acids on the productivity of young cattle. Methods. In the process of the research general scientific methods were used: deduction, scientific hypothesis and abstraction. Methods of zootechnical analysis were applied to determine the chemical composition of feed. During animal experiments methods of analogue groups were used. Results. As a result of a scientific and economic experiment to study the effect of fumaric and lactic acids on meat productivity of young cattle, it was found that over the main period of the experiment the average daily gain was higher in young cattle of the second experimental group, which received by 63 g, or 8.5% more lactic acid, the difference is statistically significant (P <0.01). In young animals of the third experimental group receiving by 74 g, or 10.0% more fumaric acid, the difference is statistically significant (P <0.01), compared with the control group. In the final period of the experiment, the average daily live weight gain in young cattle of the second experimental group receiving lactic acid was by 5 g, or 0.60%, higher; in young animals of the third experimental group obtaining fumaric acid – by 8 g, or 0.90% higher, the difference is not statistically significant compared to the control group. The absence of the statistically significant difference in the average daily gain of young cattle between the control and experimental groups indicates the absence of aftereffects of lactic and fumaric acids on productivity in the final period of the experiment. Conclusions. Increase in the average daily gain of young cattle due to the use of fumaric and lactic acids is conditioned by the fact that they have shorter path of energy production compared to glucose, activate the pancreas, intestines and stomach enzymes formation.

Purpose. To investigate the chemical composition and nutritional value of loose and granular feed. To make samples of loose and granular feed, make chemical analysis of loose and granular feeds, compare their chemical composition and content of essential nutrients. Methods. In the process of research general scientific methods were used: deduction, scientific hypothesis and abstraction. Zootechnical analysis methods were used to determine the chemical composition of compound feeds. Results. Analysis of the chemical composition of loose and granular feed in absolutely dry matter shows a higher content of essential nutrients in granular feed, so the content of crude protein in granular feed is higher by 3.52%, crude fat – by 1.45%, crude fiber and nitrogen-free of extractives – by 1.48% and by 2.79% lower than in bulk feed. Nutritional value of one kilogram of granulated feed in absolutely dry matter is 0.04 energy feed units, or 0.37 MJ, higher than of bulk feed, and content of digestible protein by 18 g, or 14.5%, higher than in bulk compound feed. 136.8 g of crude protein and 107.8 g of digestible protein fall per one energy feed unit in loose feed, 161.8 g of crude protein and 119.3 g of digestible protein in granular feed, or 25g and 11.5 g more. Analysis of the carbohydrate-lignin composition of granular and loose feed in absolutely dry matter shows a decrease of 2.8% in the amount of easily soluble sugars, starch – by 1.41%, sugar – by 0.40%, hemicellulose – by 0.39%, lignin – by 0.82% in granular feed. Conclusions. The use of granulation allows to increase the energy and protein nutritional value of feed due to the concentration of essential nutrients in the dry matter of granulated feed.