The interrelation of holstein black pied cattle’s productive qualities by lactation O.V. Gorelik, О.Е. Lihodeevskaya, N.N. Zezin, M.Yu. Sevostyanov and О.I. Leshonok BIO Web Conf., 53 (2022) 02008 Published online: 10 November 2022 DOI: 10.1051/bioconf/20225302008