The Effects of Different Concentrations of Hydrogen-Rich Water on the Growth Performance, Digestive Ability, Antioxidant Capacity, Glucose Metabolism Pathway, mTOR Signaling Pathway, and Gut Microbiota of Largemouth Bass (Micropterus salmoides)

文献类型： 外文期刊

第一作者： Yuan, Yin

作者： Yuan, Yin;Wang, Yongsheng;Li, Huixiang;Chen, Songwei;Lin, Yongchun;Peng, Jiangyuan;Hu, Junru

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关键词： hydrogen rich water; growth performance; glucose metabolism; mTOR pathways; gut microbiota; largemouth bass

期刊名称：FISHES （ 影响因子：2.1； 五年影响因子：2.4 ）

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年卷期： 2024 年 9 卷 6 期

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收录情况： SCI

摘要： Hydrogen-rich water (HRW) is widely recognized for its growth promoting, antioxidant, and anti-inflammatory properties. However, little is known about the role of HRW in aquaculture. This study aims to investigate how different concentrations of HRW affect the growth performance, digestive ability, antioxidant capacity, mTOR signaling pathway, and gut microbiota of juvenile largemouth bass. We randomly assigned 360 fish (13.73 +/- 0.1 g) to three treatments. The control group was maintained in regular water, while the treatment groups were treated with different concentrations of H-2 dissolved in water, which were H1 (179.65 +/- 31.95 ppb) and H2 (280.65 +/- 64.43 ppb), respectively. Through an analysis of the three treatments, it was found that H1 significantly increased the final body weight, weight gain rate, specific growth rate, and survival rate, and reduced the feed conversion ratio (p < 0.05). In addition, the trypsin activity was significantly increased in the intestine (p < 0.05), and the expression of genes related to the glucose metabolism (pk and pepck) and mTOR (tor, akt, s6k1, 4ebp1, and ampka) signaling pathways were significantly increased in the liver in H1 (p < 0.05). The relative abundance of Blautia in the gut microbiota (p < 0.05) was significantly increased in H1. Therefore, these results indicated that H1 can significantly improve growth performance, promote intestinal digestion, activate the glucose metabolism pathway and mTOR signaling pathway, and increase the abundance of beneficial bacteria in the gut of largemouth bass. These findings provided valuable support for the application of HRW to support the healthy aquaculture of largemouth bass.

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