Rumen bacterial community, indicators of reproduction and milk productivity at different levels of protein concentrate in the diets of dairy cows

The use of new sources by-pass protein in the cow diets to optimize milk production and herd reproduction performance indicators modern economic conditions is relevant. article presents data on a concentrate containing plant animal components its effect quality obtained, state rumen bacterial community indicators. both 1.0 kg 1.5 kg/head/day contributed improving increasing yield dry matter cow's by 0.17-0.43 %. During days milk, with it was observed that increase content Selenomonas 1.7 % 4.1%, which cleave urea, indicates more efficient nitrogen diet. inclusion composition daily helps improve indicators, reduce duration service period number semen doses spent.