Improving the reproductive function of replacement and adult sows G.S. Pokhodnya, A.V. Kosov, V.M. Breslavets, Yu.P. Breslavets and N.V. Perevozchikov E3S Web of Conf., 222 (2020) 02010 Published online: 22 December 2020 DOI: 10.1051/e3sconf/202022202010