00851naa#a2200181#i#450# EN\URAL'SKIY GOSUDARSTVENNYY AGRARNYY UNIVERSITET\bibl\2173 20240515093639.3 20180517b2018####ek#y0engy0150####ca RU DIGESTIBILITY OF NUTRIENTS AND THE USE OF MINERAL SUBSTANCES IN THE ORGANISM OF HENS WHEN INCLUDED IN THE FEED OF BIOLOGICALLY ACTIVE ADDITIVES Conference article/thesis Ekaterinburg Ural State Agrarian University 2018 5 с. Conference article/thesis local Сельское хозяйство. Лесное хозяйство. Охота. Рыбное хозяйство. 63 Общие вопросы сельского хозяйства. 68.01 grnti Astrahancev A. A. Kosarev K. V. usau.editorum.ru