Influence of organic chrome additives on productive and reproductive indicators of black and pestored breeds

Chrome treat to the number of microelements, whose functions in the animal body are not fully revealed. Numerous works of scientists have proved the value of this element for health. In the article results of researches on studying of efficiency of use of chrome-containing additives in rations of cows are resulted. Three the same group with 10 heads each. Animals of all groups received the basic ration. Cows of the first test group three weeks before the proposed calving were additionally injected with chromium propionate, based on the manufacturer's recommendations (10 mg / head per day); the second experimental group of chromium acetate (1 ml per head per day with an equivalent chromium propionate chromium content). Positive effect on dairy productivity and reproductive functions of animals was established. Against the background of the use of feed additives, organic chromium increases by 6-7%, energy increases by 0.12%, the number of pathological births decreases by 18-21, the duration of the service period is reduced by 20-26 days.