Comparative analysis of the effects of dietary supplementation with Ampelopsis grossedentata extract and dihydromyricetin on growth performance, muscle quality, and gut microbiota of Megalobrama hoffmanni

文献类型： 外文期刊

第一作者： Wang, Yunfan

作者： Wang, Yunfan;Zheng, Lingyan;Wang, Xuesong;Mai, Yongzhan;Li, Haiyan

作者机构：

关键词： Dihydromyricetin; Ampelopsis grossedentata; Megalobrama hoffmanni; Growth-promoting; Lipid-lowering

期刊名称：AQUACULTURE （ 影响因子：3.9； 五年影响因子：4.4 ）

ISSN： 0044-8486

年卷期： 2025 年 598 卷

页码：

收录情况： SCI

摘要： To investigate whether dihydromyricetin (DMY) mediates the growth-promoting effects of Ampelopsis grossedentata (Ag), a comparative analysis of the effects of DMY and Ag extract (AgE) on Megalobrama hoffmanni was performed. Weight gain rate, specific growth rate, and condition factor of M. hoffmanni in the 0.4 parts per thousand DMY-supplemented group were significantly lower than those in the 1 parts per thousand AgE-supplemented group (P < 0.05); however, these indexes in both of the DMY- and AgE-supplemented groups displayed no significant difference with those in the blank control (P > 0.05). Interestingly, hepatosomatic index downregulation and viscerosomatic index upregulation were found after supplemental feeding with DMY or AgE, implying DMY and AgE facilitated hepatic lipid transfer from the liver to mesentery. The total level of muscle fatty acids decreased in the DMY- and AgE-supplemented groups compared to the blank control, and C14:0, C15:0, and C16:0 were significantly downregulated in the 0.4 parts per thousand DMY-supplemented group (P < 0.05). Lipometabolic Propionibacteriaceae was highly enriched in the DMY- and AgE-supplemented groups, with decreased C14:0 and C16:1n7 via C5-branched dibasic acid metabolism. Additionally, DMY- and AgE-induced lipid peroxidation occurred in the muscle of M. hoffmanni, with increased levels of malondialdehyde, aldehydes (e.g., butanal and hexanal), esters, (e.g., ethyl hexanoate), and ketones (e.g., 2-butanone and 2-pentanone), which contributed to decreased muscle fatty acids and a change in muscle flavor. Because the DMY content of 1 parts per thousand AgE was equivalent to that of 0.4 parts per thousand DMY, we confirmed that dietary supplementation with DMY at a relatively high level was responsible for the lipid-lowering effects of Ag, rather than the growth-promoting effects of Ag.

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