Effects of Different Dietary Selenium Sources Including Probiotics Mixture on Growth Performance, Feed Utilization and Serum Biochemical Profile of Quails

Abstract

Selenium supplements what are using inorganic and organic forms are used to increase the growth rate and the antioxidant protection of the organism. However, these forms have limitations such as narrow safety interval and non-specific binding to tissue proteins. The selenium nanoparticles (SeNPs), which have better bioavailability, relatively high safety margins, and low toxicity, can serve as alternatives. Adding probiotic supplements to feed increases the bioavailability of nutrients, health status, immunity, productivity and bird conservation. It was established that quails of experimental groups over live weight prevailing control analogues. Concentrations of cholesterol, triacylglycerols in serum decreased, and protein content increased with respect to control. At the same time, in experimental groups, there is a tendency to decrease the activity of marker enzymes (ALT, AST) and decrease in content of total lipids, uric acid and creatinine. Thus, the addition of inorganic selenium, probiotics, SeNPs and their complexes has a positive effect on biochemical parameters, increment, conversion rate of feed and conservation of quails with respect to control. Nanoselen separately, and in combination with a probiotic, has more effective effect compared to sodium selenite.