00634naa#a2200181#i#450# EN\URAL'SKIY GOSUDARSTVENNYY AGRARNYY UNIVERSITET\bibl\88336 20241019223425.6 1997-4868 20240903b2024####ek#y0engy0150####ca RU The use of biologically active substances in poultry feeding (review) Journal article Ekaterinburg Ural State Agrarian University 2024 7 с. Journal article local Kazachkova Nadezhda Mihaylovna Kartekenov Kanat Sharipovich Duskaev Galimzhan Kalihanovich usau.editorum.ru