Influence of polymorphism of the kappa-casein gene of cows on the development of calves in the early postnatal periodOlga Polozyuk, Margarita Zabelina, Tatiana Preobrazhenskaya, Igor Tyurin and Elena LakotaE3S Web Conf., 262 (2021) 02002DOI: https://doi.org/10.1051/e3sconf/202126202002