TY JOUR TI Digestibility of dietary nutrients and morphohistological changes in the pancreas and duodenum of broiler chickens against the background of replacement of feed antibiotics with a complex phytobiotic drug KW broiler chickens KW nutrient digestibility KW pancreas KW duodenum KW morphohistological changes KW phytobiotics KW feed antibiotics KW essential oils KW protected organic acids. JO Аграрный вестник Урала AU Шацких, Е.В. AU Нуфер, А.И. AU Дроздова, Л.И. PY 2020 IS 203 PB Уральский государственный аграрный университет