TY JOUR TI IMMUNE STATUS OF COLOSTRUM DEPENDING ON MILK YIELD AFTER THE FIRST CALVING KW calves KW colostrum KW milk yield KW immunoglobulins KW colostral immunity JO Bulletin Samara State Agricultural Academy AU Bakayeva, L.N. AU Karamayev, S.V. PY 2021 IS 6 PB Samara State Agrarian University