TY JOUR TI POLYMORPHISM OF THE LEPTIN AND DIACYLGLYCEROL-O-ACYLTRANSFERASE GENES IN HOLSTEINIZED BLACK AND WHITE BULLS KW polymorphism KW frequency of occurrence KW genotype KW allele KW LEP KW DGAT1 KW bull KW line JO Agrobiotechnologies and digital farming AU Lamara, M.. AU Zagidullin, L.R. AU Ahmetov, T.M. AU Shaydullin, R.R. AU Tyulkin, S.V. PY 2022 IS 1 PB Kazan state agrarian University