Realization of the genetic potential of Holstein cows of different genealogical lines depending on the polymorphism of the kappa-casein gene
The article presents the results of the productive indicators of Holstein cows depending on the polymorphism of the kappa-casein gene and their belonging to lines Vis Back Ideal and Reflection Sovereign in the conditions of the breeding reproducer of LLC "Barmino", Lyskovsky municipal district of Nizhny Novgorod region...