Boosted growth performance, immunity, antioxidant capacity and disease resistance of crucian carp (Carassius auratus) by single or in combination dietary Bacillus subtilis and xylo-oligosaccharides

文献类型： 外文期刊

第一作者： Liu, Jia

作者： Liu, Jia;Lu, Yuting;Li, Liang;Li, Yuehong;Liu, Jia;Lu, Yuting;Li, Liang;Li, Yuehong;Wang, Bo;Lai, Qifang;Liu, Shaojun

作者机构：

关键词： Bacillus subtilis; Xylo-oligosaccharides; Symbiotic; Immune parameters; Aeromonas hydrophila

期刊名称：COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY （ 影响因子：4.52； 五年影响因子：4.203 ）

ISSN： 1532-0456

年卷期： 2022 年 256 卷

页码：

收录情况： SCI

摘要： In this study, a total of 420 healthy crucian carp (9.77 & PLUSMN; 0.04 g) were randomly divided into CK, B.S, XOS and B.S + XOS group, and cultured for 8 weeks. Results showed that the dietary Bacillus subtilis (B. subtilis) and xylooligosaccharides (XOS) can significantly increased the final weight, weight gain, specific growth rate, feed efficiency, protein efficiency and survival rate of crucian carp. Dietary B. subtilis and XOS can significantly increased the activities of catalase, glutathione, superoxide dismutase and total antioxidant capacity, significantly decreased the contents of malondialdehyde, and significantly increased the activities of alkaline phosphatase, acid phosphatase, lysozyme and the contents of complement component 3,4 and immunoglobulin M in crucian carp serum. In addition, compared with CK group, the expression levels of TGF-beta and IL-10 in B.S, XOS and B.S + XOS group were significantly increased, and the expression levels of TNF-alpha, HSP90, IL-1 beta, TLR4 and MyD88 were significantly decreased. Supplementation of B. subtilis and XOS can also improve the intestinal tissue morphology of crucian carp. After injection of 1 x 10(7) CFU/mL Aeromonas hydrophila (A. hydrophila), compared with CK group, the survival rates of the B.S group, the XOS group and the B.S + XOS group were increased by 13.98%, 10.56% and 30.74%, respectively. These results show that dietary B. subtilis and XOS can significantly improve the growth performance, antioxidant capacity, immunity and resistance to A. hydrophila of crucian carp, and the combined effect is better than that of single addition.

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