Physical and chemical properties of feed and milk production of cows

Abstract

The efficiency of energy and protein mineral supplement with «protected» protein on the basis of rapeseed in the diets for dairy cows was studied. It is determined that inclusion in diet of 20 % of developed feed additive improves milk efficiency by 7,8 % and 4%-milk obtained - by 10,9 % more than in the control group, while also increasing the content of fat by 0,2 pp. Feeding cows with supplements with «protected» protein reduces the level of urea in the blood by 22,2 %, AST - by 12,4 %, ALT - by 5,3 %, which shows normalization of nitrogen metabolism in the rumen, increasing efficiency of nitrogen use, normalization of the liver functions, and generally it all contributes to creation of better conditions for increasing milk production. With the introduction of feed supplement in diets of cows 1,0 ruble of profit per 1 ruble of spends was obtained that is economically justified.