Effects caused by different doses of dietary chromium nanoparticles fed to broiler chickens

Chromium is important chemical element for humans and animals which essentiality is manifested in reducing the amount of glucose and cholesterol in blood, reducing body fat. Factors which influence the absorption of chromium are source, size and composition of diet. Reducing size of Cr particles allows one to increase absorption. Replacement of traditional sources of microelements for organic and ultrafine metal forms is prospective due to their surface area, higher reactivity and bioavailability. In this paper, we show for the first time that Cr2O3 nanoparticles (NPs) at doses of 50 to 100 µg/kg of feed have no toxic effect, improve productive performance through stimulation of digestive enzymes and have positive effect on accumulation of the element in broiler chicken carcass. Our goal was to estimate effects of various doses of dietary chromium nanoparticles on the activity of digestive enzymes, biochemical blood parameters and gut microbiota in Arbor Aikres broiler chickens ( Gallus gallus ) (OAO Orenburg Poultry Farm, 2018)...