TY JOUR TI CHEMICAL COMPOSITION OF COLOSTRAL MILK OF COWS WITH DIFFERENT GENOTYPES ACCORDING TO KAPPA CASEIN KW breed KW cow KW colostral milk KW genotype KW kappa-casein JO Bulletin Samara State Agricultural Academy AU Karamayeva, A.S. AU Bakayeva, L.N. AU Karamayev, S.V. PY 2021 IS 6 PB Samara State Agrarian University