Optimization of feeding to normalize the metabolism of the cows while increasing their milk yield

Rational feeding, balanced in nutritional elements, is necessary to maximize milk productivity and to obtain economic outcome from the dairy herd. Keeping parameters, environmental conditions, and feeding errors in dairy cows affect herd productivity and health. In the spring-summer period of 2022 cows showed signs of metabolic disorders, acetonimic effect, which affected the production indicators of the dairy herd. In the course of the conducted research, it was established that the change of metabolic processes, decrease of milk productivity and production indicators was caused by violation of the fee- ding norms (decrease of feed mixture palatability by 20%, lack of nutrient intake from 9 to 49%), pre dominance of concentrate type of feeding. As a result, blood biochemical indices were changed relative to physiologic value: glucose level was reduced by 9%, microelements and vitamins up to 2 times, alkaline reserve was at the lower limit, ketone bodies level was increased. The level of culling of cows amounted to 3%, 2/3 of the culled cows showed signs of intoxication of internal organs. The ration struc ture was adjusted: the amount of roughage was increased, the amount of concentrates and high-protein additives was reduced, energy and mineral supplements were additionally applied. As a result of these measures, feed palatability increased by 19% and nutrient intake increased by 35–45% relative to the previous period. The increase in average daily milk yield amounted to 10%, cow wastage decreased, and the number of cases of intoxication of internal organs decreased more than 2 times.  The economic effect from the change of the ration and additional application of fodder means amounted to +18 rubles.

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