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Effects of dietary raffinose on growth, non-specific immunity, intestinal morphology and microbiome of juvenile hybrid sturgeon (Acipenser baeri Brandt female x A. schrenckii Brandt male)

文献类型： 外文期刊

作者： Xu, Guanling 1 ; Xing, Wei 1 ; Li, Tieliang 1 ; Ma, Zhihong 1 ; Liu, Caixia 1 ; Jiang, Na 1 ; Luo, Lin 1 ;

作者机构： 1.Beijing Fisheries Res Inst, Beijing 100068, Peoples R China

关键词： Hybrid sturgeon (Acipenser baeri. Brandt female x A. schrenckii Brandt male);Raffinose;Microbiome;Intestinal structure

期刊名称：FISH & SHELLFISH IMMUNOLOGY （ 影响因子：4.581； 五年影响因子：4.851 ）

ISSN： 1050-4648

年卷期： 2018 年 72 卷

页码：

收录情况： SCI

摘要： This study was performed to determine the efficacy of raffinose on the growth, non-specific immunity, intestinal morphology and microbiota of juvenile hybrid sturgeon, (Acipenser baeri Brandt female x A. schrenckii Brandt d). Hybrid sturgeons were divided into 2 groups and each group was fed with diets supplemented with or without raffinose for 56 days. Hybrid sturgeon fed diet supplemented with raffinose had significantly higher final body weight (FBW), specific growth rate (SGR), and weight gain ratio (WGR) than fish fed the control diet (P < 0.05). Raffinose in diet had no negative effect on feed intake (FI) and feed conversion ratio (FCR) (P > 0.05). Compared with the control diet, the myeloperoxidase (MPO) and respiratory burst (NBT) activitives were significantly higher in sturgeon fed the raffinose supplemented diet (P < 0.05). The increasing of intestinal villi area and mucosal folds were observed in intestinal tract of sturgeon when they fed the raffinose supplemented diet. Meanwhile, the residual bait of intestinal tract was relatively lower in sturgeon with raffinose treatment. High-throughput sequencing revealed that majority of reads derived from the sturgeon digesta were constituted by members of Proteobacteria, Firmicutes, Fusobacteria and Actinobacteria. Shannon's diversity index existed significant difference among dietary treatments indicating that the overall microbial community was modified to a large extent by dietary raffinose. In conclusion, supplementation of the diet with raffinose is capable of improving hybrid sturgeon growth performances and intestinal morphology, modifying the intestinal microbial composition.

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