TY JOUR TI Slow-release drug for the treatment of piglet pneumonia KW tylosin preparations KW treatment and prevention of piglet pneumonia JO Proceedings of the Komi Science Centre of the Ural Division of the Russian Academy of Sciences AU Zuev, N.P. AU Lopatin, V.T. AU Tuchkov, N.S. AU Shutikov, V.A. AU Adon'eva, E.V. PY 2023 IS 0 PB FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"