Characteristics of bull-producers with complex genotypes genes of BLG and INOS by milk productivity of female ancestors

The increased milk productivity is typically connected to decrease of various diseases resistance, including leukemia of cattle. The study analyzed the associative relation between complex genotypes of genes BLG and iNOS of bull-producers with their breeding value on milk productivity indicators of immediate female ancestors. The research has been established that the highest rates of milk yield and fat amount of female ancestors were observed in studied bulls of complex genotype AB / BB genes of BLG and iNOS.