文献类型： 外文期刊

作者： Zhang, R. ¹ ; Liu, L-L ¹ ; Wang, X-W ¹ ; Guo, C-Y ² ; Zhu, H. ¹ ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Beijing Fisheries Res Inst, Beijing Key Lab Fishery Biotechnol, Beijing, Peoples R China

2.CJ Shanghai Trading Co Ltd, Shanghai, Peoples R China

关键词： Tea polyphenols; Cryprinus carpio; Growth; Immune response; Intestinal microbiota

期刊名称：AQUACULTURE （ 影响因子：4.242； 五年影响因子：4.723 ）

ISSN： 0044-8486

年卷期： 2020 年 516 卷

页码：

收录情况： SCI

摘要： We evaluated the effects of dietary tea polyphenols (TP) on growth, immune response and intestinal bacterial community in Koi carp (cryprinus carpio). One hundred and eighty fish were randomly assigned to a basal diet or three treatments consisting of basal diet supplemented with three dosage of TP. Body weight were measured at the beginning and end of trial. Blood and intestinal samples were collected at the end of trial to determine immune response and intestinal bacterial community. The results indicated that lipase activity increased in the TP-500 and TP-1000 treatments (P = 0.0007). Dietary TP decreased the concentration of serum IL-1 IL-6, lysozyme, complement C4 and C3 (P < 0.0001; P < 0.0001; P = 0.0007; P < 0.0001; P = 0.0365, respectively). No differences was observed in the body weight, protease and amylase activities, and serum TNF-alpha among the treatment and control groups. Proteobacteria was more abundance in the TP-500 and TP-1000 treatments compared to that in control (P = 0.0346; P = 0.0005), whereas Fusobacteria was less abundance in the TP-1000 treatment (P = 0.0008). Intestinal bacteria, indicated by simpson and shannon indices, was more diverse in the TP-1000 treatment. The principal coordinate analysis (PCoA) based on weighted UniFrac distance indicated that bacterial community of the TP-1000 or TP-500 treatment was separated from that of control (P = 0.001; P = 0.008). In conclusion, dietary supplementation of TP had anti-inflammation effects, but attenuated non-specific immune response. These TP-mediated changes in immune response may be associated with the structure of intestinal bacterial community.