Productivity and parameters of blood of sows fed with probiotic supplements Leonid N. Gamko, Tatiana L. Talyzina, Valery E. Podolnikov, Ivan I. Sidorov and Anna G. Menyakina BIO Web Conf., 27 (2020) 00025 Published online: 25 November 2020 DOI: 10.1051/bioconf/20202700025