00618naa#a2200169#i#450# EN\URAL'SKIY GOSUDARSTVENNYY AGRARNYY UNIVERSITET\bibl\69447 20240518074431.6 1997-4868 20230815b2023####ek#y0engy0150####ca RU Comparative evaluation of the effectiveness of feed additives based on peat sapropel concentrate in the cultivation of broilers Journal article Ekaterinburg Ural State Agrarian University 2023 9 с. Journal article local Drozd M. N. Usevich Vera Mihaylovna usau.editorum.ru