Ways to increase the effectiveness of hyperimmune serum against colibacteriosis, salmonellosis and pasteureellosis of lambsAbdusalom Abdusattarov, Mutabar Gaipova, Gayrat Mengliev, Shokhruz Khujakhonov and Abdumumin AmirovE3S Web Conf., 563 (2024) 03040DOI: https://doi.org/10.1051/e3sconf/202456303040