Effects of Setipinna taty protein peptides on the growth, body composition, antioxidant ability and intestinal flora of Nibea albiflora

This study investigated the effects of Setipinna taty protein peptides on the growth, body composition, antioxidant ability and intestinal flora of juvenile Nibea albiflora. The results of this study indicated that there were no significant differences between the control and experimental groups regarding survival, specific growth rate (SGR), feed conversion rate (FCR) and body composition (p > 0.05). Also, there were no significant differences among the control and experimental groups regarding the superoxide dismutase (SOD), glutathione peroxidase (GSH-PX) and malondialdehyde (MDA) contents of juvenile Nibea albiflora (p > 0.05). For catalase (CAT), the contents of the 42 mg/ml and 21 mg/ml groups were significantly higher than that of the control group (p < 0.05). Regarding lysozyme (LYZ), the content of the 42 mg/ml group was significantly higher than those of the control and 21 mg/ml groups (p < 0.05). The alpha diversity did not exhibit significant differences between the control and experimental groups (p > 0.05). At the phylum level, the dominant intestinal flora in the experimental groups were Tenericutes and Proteobacteria, which accounted for approximately 90.94% of the total flora. At the genus level, Mycoplasma was more abundant in the control group, and Marivita and Qidonghai fungi were the dominant genera in the experimental groups. The results of this study demonstrated that the Setipinna taty protein peptides can change the abundance of the dominant community in the intestine of juvenile Nibea albiflora.