Assessment of the state of metabolic processes in cows when feeding an energy supplement

The purpose of research is to study the metabolic status of cows against the background of the use of various doses of an energy feed additive made by extracting polysaccharides from sunflower meal. The experiment was carried out at the Federal State Budgetary Institution FANCA PZ Komsomolskoye the Pavlovsky District, Altai Region on cows of the Priobsky type of black-and-white breed of the 2nd-5th lactation, of which, according to the principle of pair-analogs, a control group and two experimental groups of 10 animals each were formed. Animals in the control group were fed the basic household ration. In the 1st experimental group, they additionally started using the supplement 20 days before birth and continued for 50 days of lactation, which was given in a mixture with food at 200 ml per bird/day. Cows of the 2nd experimental group were similarly fed the experimental drug at a dose of 400 ml per head/day. The results of blood tests on the 50th day after calving showed that in the experimental groups of cows the level of glucose was higher on average by 23%, carotene by 10.9, calcium by 14.5, zinc by 6%, and aspartate aminotransferase activity was lower - by 17% compared to the control group, which indicates a more rapid replenishment of energy costs by the body tissues of cows in the postpartum period and normalization of metabolic processes after the use of polysaccharide extract. The most favorable effect on metabolism was evident in the group of cows that received the drug at a dose of 400 ml, where the concentration of trace elements in the blood was on average 12.7% higher than in the control.