The effects of feed additives based on the hydrolysates of keratin- and collagen-containing waste materials on the intestinal microbiota and productivity parameters in broiler chicks (Gallus gallus L.)

The use of new animal-derived protein ingredients in commercial diets for poultry as a substitute for the expensive fishmeal is an urgent direction of the nutritional research. At present a range of new additives is designed based on the wastes of poultry slaughter and processing. In this paper, we first report the results of comparative analysis of the bacterial community in blind processes of the intestines of broiler chickens fed with dietary protein-rich additives derived from keratin- and collagen-containing waste products after short-term high-temperature enzymatic hydrolysis in a thin layer. These findings show possibility of using new feed additives to increase the productivity and quality of broiler meat. Our study was aimed at the evaluation of the effects of the feed additives based on keratin- and collagen-containing wastes on the intestinal microbiota counts and composition in conjunction with productive performance of broiler chicks. The chicks (Gallus gallus L...