TY JOUR TI DYNAMICS OF INDEXES OF PROTEIN METABOLISM IN THE ORGANISM OF HEIFERS ON THE BACKGROUND OF THE USE OF THE PROBIOTIC PREPARATION KW JO Agrarian Bulletin of the AU Yarmuhametova, V.R. AU Muhamed'yanova, L.G. AU Bykova, O.A. AU Loretc, O.G. AU Neverova, O.P. PY 2018 IS 170 PB Ural State Agrarian University