USE OF TREPIDEL IN FEEDING MILK COWS
Chemical analysis of diets in many farms shows that when the organic part is balanced, the balance of mineral components still leaves much to be desired. Scientists and practitioners have long tried to balance diets in different ways, especially those of highly productive cows, so the main goal of our research was to study the effect of mineral feeding bergmeal on the body and productivity of dairy cows. The objectives of the research were to study the feeding level of lactating cows, their milk productivity, reproductive qualities and blood parameters. The research was conducted in the Agricultural Production Cooperative "Dimitrovsky" of the Blagoveshchensk district of the Altai Territory. For the experiment, two groups of first-calf heifers were selected according to the principle of analogues. The experimental animals were kept under the same conditions of feeding and keeping. The cows of group II, in addition to the main diet, had mineral feeding of bergmeal. A study on the biochemical analysis of blood showed how the needs of the body were met by such a diet. A comparative bio-chemical analysis of blood serum showed an increase in calcium by 0.65 mg/100 ml, phosphorus by 0.25 mg/100 ml, magnesium by 1.2 mg/100 ml and iron by 0.02 mg/100 ml in the blood of cows fed with bergmeal. With the stabilization of mineral metabolism, the cow's body fulfilled its genetic potential better. The animals fed with the mineral additive gave 7% more milk during 305 days of lactation, with a fat content of 3.9% and a protein content of 3.2%. The increase in milk productivity allowed us to get more milk fat and protein. The duration of the service period decreased by 10.7%, the number of abortions and miscarriages by 10%, and the number of difficult deliveries by 19.5%.