Morphological structure (40X) of intestine of birds receiving different diets. Duodenum (A), jejunjum (B) and ileum (C). Control (basal diet), multi strain probiotics (100g/100kg of feed); multi enzymes (100g/100kg of feed); villi height (VH)↔; villi width (VW) ↔; crypt depth (CD) ↔.