Xylanase and β-glucanase supplementation improve conjugated bile acid fraction in intestinal contents and increase villus size of small intestine wall in broiler chickens fed a rye-based diet

摘要: This study was performed with growing chickens (4 to 22 d of age) evaluate the effects feeding a rye-based diet supplemented commercial enzyme preparation containing xylanase and beta-glucanase (Quatrazyme HP, Nutri-Tomen, France) on small intestine wall morphology, bile acid composition, nutrient digestibility, bird performance compared unsupplemented rye- or corn-based diets. The decreased (P < = 0.05) weight gain, feed intake, efficiency increased water intake diet. Moreover, rye consumption reduced crude fat protein digestibility as well apparent metabolizable energy 0.05). showed that villus length, width, surface were in broiler fed those However, crypt morphometry parameters not affected by type. concentration conjugated acids contents These findings suggest reduces capacity for absorption solubilization emulsification, resulting performance. addition improved efficiency, intake. nutrients also Addition size height-to-crypt depth ratio, contents. Exogenous enzymes chicken performance, probably improving ofthe through intestinal acids.