Microbiocenosis of the intestines of broiler chickens when using different doses of L-asparginates in diets

Abstract

In 2021, an experiment was conducted in the vivarium of the FNC VNITIP RAS on three groups of broiler chickens of the Smena 8 cross with the use of a mineral supplement in the form of L-asparaginates in the amount of 10% and 20% of the accepted OMEC standards in the diets. At the end of the experiment, at the age of 35 days, poultry was slaughtered and intestinal samples were taken for research. According to the data obtained, a rich variety of lactobacilli was noted in the intestinal microbiome of broilers of all experimental groups, but their total proportion, along with bifidobacteria and bacilli, was small. At the same time, in the microbial community of the intestines of chickens of the third group, which received 20% of the mineral supplement from the accepted norms of OMEC in the diet, in comparison with the first and second groups, there was a confident tendency to increase the listed representatives of the normoflora. The proportion of cellulolytic bacteria in the microbial community of the intestines of chickens of all groups was high (72.78% - 95.12%), which compensates for the lack of representatives of the normoflora, is an indicator of the actively occurring processes of fiber breakdown and improved digestion.