TY JOUR TI Development of the pancreas in broiler chickens when synbiotics and phytobiotics are included in the diet KW broiler chickens KW synbiotic KW phytobiotic KW pancreas KW feed antibiotics KW biologically active additives KW histology JO Agrarian Bulletin of the AU Shackih, E.V. AU Korol'kova-Subbotkina, D.E. PY 2023 IS 23 PB Ural State Agrarian University