Yam (Rhizoma Dioscoreae) polysaccharide affects growth performance, immunity, and intestinal microbial community in Bulatmai barbel ( LucioBarbus capito)
文献类型： 外文期刊
作者： Luo, Liang 1 ; Meng, Xianwei 1 ; Wang, Shihui 1 ; Zhang, Rui 1 ; Guo, Kun 1 ; Wang, Gaochao 1 ; Wang, Wei 2 ; Zhao, Zhigang 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Heilongjiang River Fishery Res Inst, Key Lab Cold Water Fish Germplasm Resources & Mult, Harbin 150070, Peoples R China
2.Harbin Inst Technol, Sch Environm, State Key Lab Urban Water Resource & Environm SKLU, Harbin 150090, Peoples R China
3.Harbin Univ Commerce, Ctr Pharmaceut Engn & Technol, Harbin 150076, Peoples R China
关键词： Antioxidant; Bulatmai barbel; Immunomodulation; Intestinal microbial; Yam polysaccharide
期刊名称：ANIMAL FEED SCIENCE AND TECHNOLOGY （ 影响因子：2.7； 五年影响因子：3.1 ）
ISSN： 0377-8401
年卷期： 2024 年 318 卷
页码：
收录情况： SCI
摘要： Polysaccharides from yam (Rhizoma Dioscoreae) can be used as immunopotentiators in aquaculture; however, the protective mechanism of adding them to feed for Bulatmai barbel (LucioBarbus capito) remains unclear. This study aimed to investigate the effects of adding yam polysaccharide (YP) to feed for 8 weeks on the growth performance, antioxidant capacity, gene expression, and intestinal flora of the Bulatmai barbel. The experimental groups were fed a diet including 0.1 %, 0.2 %, 0.4 %, and 0.8 % YP, whereas the diet of the control group contained no added YP, with three replicates per group. The results showed that the addition of YP significantly increased the weight gain rate and specific growth rate of the Bulatmai barbel, which were significantly higher than those of the control group (P < 0.05). The growth effect of the 0.4 % YP (279.77 +/- 17.43 g) experimental group was significantly better than that of the other experimental groups, and the feed coefficient (49.35 +/- 4.67 g) was significantly lower than that of the control group (P < 0.05). The addition of YP significantly improved immune activity and antioxidant capacity of the liver; HSP70 expression decreased and AKP and SOD expression levels significantly increased in the 0.40 % YP group (P < 0.05). In addition, the relative abundance of intestinal bacteria increased for Fusobacteriota and Firmicutes but decreased in Proteobacteria in the experimental groups compared with the control group. At the genus level, Cetobacterium was the dominant bacterium. With an increase in YP concentration, the relative abundance of Cetobacterium increased, whereas that of Pseudomonas and Phreatobacter decreased. In conclusion, dietary supplementation with 0.4 % YP significantly improved growth performance, antioxidant capacity, and gene expression; and regulated intestinal microbial diversity and floral structure in the Bulatmai barbel.
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