Changes in the indicators of the intestinal normoflora of broiler chickens when L–asparaginates and Phytases are added to the feed

Abstract

In 2021, in the vivarium of the FNC "VNITIP" of the Russian Academy of Sciences, an experiment was conducted on 4 groups of broiler chickens of the SGC "Smena 8" breeding with the use of a mineral supplement in the form of Lasparaginates in the amount of 7.5% of the accepted norms, both with and without phytase. As a result, it was found that Lasparaginates and microbial phytase contributed to the enhancement of biological activity, providing better assimilation of metals. With a low proportion of lactobacilli in the intestinal flora of broiler chickens of all groups, there was a tendency to increase them in the fourth group of birds that received 7.5% of L-asparaginates from the accepted norms in combination with phytase in the diet.phytase in the diet. Among the cellulolytic bacteria in the intestinal microbiome, the highest rates were found in the first and third groups of broilers that received both an inorganic form of mineral supplement in the form of premixes (the first group) and organic, in the form of L-asparaginates in combination with phytase (the third group), which compensated for the low proportion of lactobacilli in the intestines of birds of these groups. The obtained results testified to the positive effect of the studied mineral supplement and phytase on the safety indicators, the live weight of broiler chickens and the microflora of their intestines.