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文献类型： 外文期刊

作者： Du, Yibo 1 ; Han, Ying 1 ; Zhang, Rong 2 ; Zhang, Yinhua 1 ; Bao, Shuai 1 ; Cao, Yongchun 1 ;

作者机构： 1.Beijing Univ Agr, Anim Sci & Technol Coll, Beijing 102206, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Fisheries Sci Inst, Beijing Key Lab fishery Biotechnol, Beijing 100068, Peoples R China

关键词： Baicalein; Growth; Antioxidant; Gut microbiota; Koi Carp

期刊名称：AQUACULTURE REPORTS （ 影响因子：3.385； 五年影响因子：3.645 ）

ISSN： 2352-5134

年卷期： 2022 年 27 卷

页码：

收录情况： SCI

摘要： Baicalein is a flavonoid that is widely found in plants. Studies have shown that baicalein has growth promoting, antioxidant, antitumor, and antibacterial effects. The objective of this study was to evaluate the effect of bai-calein on growth, antioxidant capacity, and intestinal flora of koi carp (Cyprinus carpio). A total of 216 koi weighing 15.34 +/- 0.21 g were divided into four treatment groups, with three replicates of 18 fish per group. Baicalein was supplemented to the basal diet at 0 % (control), 0.1 %, 0.3 %, or 0.5 %. Fish were fed at 1-2 % of initial body weight per day for eight weeks. Blood and tissue samples were collected at the end of the trial to determine immune and intestinal bacterial communities. The results showed that dietary supplementation with 0.1 % and 0.3 % baicalein significantly increased the weight gain rate (P < 0.01), specific growth rate (P < 0.01), and liver-to-body ratio (P < 0.01), and the fatness was significantly increased in the 0.3 % group (P < 0.01). The activities of liver catalase (CAT) and superoxide dismutase (SOD) were significantly increased in the 0.3 % and 0.5 % groups (P < 0.01). The activity of liver malondialdehyde (MDA) was significantly decreased, and the activity of liver lysozyme (LZM) was significantly increased in the 0.3 % group (P < 0.01). The activity of renal lysozyme (LZM) was significantly increased in the 0.3 % and 0.5 % groups (P < 0.01), and IL-1 alpha was significantly decreased in the 0.3 % group (P < 0.01). LEfSe analysis showed that at the genus level, Mycobacterium and Streptococcus were enriched in the 0.1 % baicalein-treated group, and Polynucleobacter and Burkholderia-Cab-alleronia-Paraburkholderia were enriched in the control group. In summary, baicalein significantly improved the growth performance, antioxidant index, immune response, and intestinal flora of koi, and the optimum inclusion rate of baicalein was 0.3 %.

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