Assessment of bulls by capa-casein in the conditions of the Udmurt Republic Galina Yu. Berezkina, Elena M. Kislyakova, Svetlana L. Vorobyeva and Konstantin E. Shkarupa BIO Web Conf., 17 (2020) 00073 Published online: 28 February 2020 DOI: 10.1051/bioconf/20201700073