Association of LEP gene polymorphism with biochemical parameters of lipid metabolism and milk productivity of Holstein cattleNatalia Safina, Gazimzyan Sharafutdinov, Tahir Akhmetov, Rustam Ravilov and Fanil VafinE3S Web Conf., 254 (2021) 01007DOI: https://doi.org/10.1051/e3sconf/202125401007