TY JOUR TI CORRECTION OF COW METABOLISM BEFORE CALVING KW metabolism KW serum KW blood KW glucose KW protein KW enzymes JO Bulletin Samara State Agricultural Academy AU Baymishev, K.B. AU Baymishev, M.H. AU Eremin, S.P. AU Baimisheva, S.A. PY 2023 IS 7 PB Samara State Agrarian University