TY JOUR TI CORRECTION OF REPRODUCTIVE INDICATORS OF HOLSTEIN COWS KW delivery KW the placenta KW fetus KW fertilization KW insemination KW milk KW involution JO Bulletin Samara State Agricultural Academy AU Baimishev, M.H. AU Uskova, I.V. AU Kitaeva, S.A. PY 2017 IS 2 PB Samara State Agricultural Academy