%0 Journal Article %T MONITORING VARIABILITY OF LEPTIN GENE (LEP) ALLELES OF LARGE CATTLE, DEPENDING ON THE DIRECTION OF PRODUCTIVITY %A Safina, N.Y. %K leptin, allele, genotype, polymorphism, RFLP - Restriction Fragment Length Polymorphism, productivity, selection, cattle. %J Vestnik of Kazan State Agrarian University %D 2018 %N 12 %P 4 %I Kazan state agrarian University