The objective of the present study was to examine the impact of dietary supplementation with probiotics and yeast cell wall prebiotics on the intestinal microbiota of common carp (
Cyprinus carpio). A total of 96 carp, with an average body weight of 932
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The objective of the present study was to examine the impact of dietary supplementation with probiotics and yeast cell wall prebiotics on the intestinal microbiota of common carp (
Cyprinus carpio). A total of 96 carp, with an average body weight of 932 ± 161 g, were distributed into 12 fish tanks (800 L), with 8 fish/tank. The fish were fed a variety of experimental diets, including a basal diet only (CD) or a basal diet supplemented with the probiotic
Pediococcus acidilactici (PA), the yeast probiotic
Saccharomyces cerevisiae (SC), or the yeast cell wall prebiotic (YANG) at a concentration of 0.1% (1 g/kg) for a duration of 42 days. At the end of the trial, fish digesta were withdrawn, and the total bacterial community of the gut of common carp was analyzed using Illumina’s NGS targeting the 16S rRNA gene. A Krona phyla richness pie chart showed that 11 bacterial phyla were recorded in fish fed YANG, with the top three phyla being Fusobacteria, Firmicutes, and Proteobacteria. In addition, 10 phyla were identified in fecal samples from carp fed PA, with the top three phyla being Proteobacteria, Firmicutes, and Fusobacteria. Furthermore, nine phyla were recorded for carp fed SC, with the top three phyla being Fusobacteria, Firmicutes, and Proteobacteria. However, carp fed a basal diet exhibited 14 phyla, with the most abundant phyla being Fusobacteriota, Bacteroidota, and Proteobacteria. This study concluded that the tested feed supplements could cause considerable alterations in the composition of the gut microbiome of carps reared in recirculating systems.
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