Effect of chitosan complexes on the bacterial community of cecum and productivity of broiler chickens

The search and development of natural biological additives that have a comprehensive effect as immunostimulants improve digestion in poultry is relevant. This study was carried out at the Selection Genetics Center “Zagorskoe EPH”. control experimental groups were formed 1-day-old Ross-308 cross broilers (35 heads each). Six formed. group No.1 (control) received basic feed (BF) with addition antibiotic Maxus. No.2 BF without antibiotic. No.3 (experimental) KH-1 chitosan complex. No.4 KHM complex copper nanoparticles. No.5 drinking preparation based on KH-Aqua No.6 enriched bacterial community gut cecum analyzed using molecular genetics method next-generation sequencing (NGS). complexes (both supplemented nanoparticles form) made it possible to obtain high livability increased live body weight decreased consumption per 1 kg gain. 35-day-old 2.96-5.70% higher than 5.86-8.23% decrease results NGS showed regulation composition microbiome broilers’ predominantly positive. There an up 4.4-fold increase content representatives normoflora, bacteria family Lactobacillaceae. number genus Helicobacter, among which pathogens are often found, 2.6-33.3 times lower antibiotics. So, proved be valuable supplements for poultry.