Tishchenko, O.S., Mykhalko, O.G., Myronenko, O.I., Kuzmenko, L.M., PanasovaТ.G., Zhelizniak, I.M. and Plechko, O.S. 2024. GROWTH, PRESERVATION AND EFFICIENCY OF PIG FATTENING UNDER CONSTANT AND VARIABLE IN THE POST-WEANING PERIOD ON REARING AND FATTENING FEEDING SYSTEMS. Bulletin of Sumy National Agrarian University. The series: Livestock. 1 (Mar. 2024), 111-121. DOI:https://doi.org/10.32782/bsnau.lvst.2024.1.14.