Dietary magnesium hydride supplementation positively influences growth performance, intestinal histology, intestinal microbiota, and metabolites in juvenile largemouth bass (Micropterus salmoides)
In present study, the survival, growth performance, intestinal histology, intestinal microbiota, and metabolites of largemouth bass (Micropterus salmoides) fed with diets supplemented with different concentrations of magnesium hydride (MgH2), containing 0 mg/kg (H0), 10 mg/kg (H10), 20 mg/kg (H20),...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-07-01
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| Series: | Aquaculture Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352513425002054 |
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| Summary: | In present study, the survival, growth performance, intestinal histology, intestinal microbiota, and metabolites of largemouth bass (Micropterus salmoides) fed with diets supplemented with different concentrations of magnesium hydride (MgH2), containing 0 mg/kg (H0), 10 mg/kg (H10), 20 mg/kg (H20), and 30 mg/kg (H30) hydrogen molecules. Four hundred and eighty juvenile largemouth bass (38.24 ± 2.37) g were cultured for 8 weeks, and the results showed that dietary supplementation with MgH2 improved fish survival rate (SR), weight gain rate (WGR), and length, while relative fatness was reduced. The best growth effect was observed in the H20 group. The MgH2 supplementation group also presented significantly increased villus length, basal layer thickness, and goblet cell number. The intestinal microbiota of the MgH2 supplementation group was significantly different compared to the control group. The relative abundance of Fusobacteriota and Proteobacteria significantly increased in MgH2 supplementation group, while the abundance of Firmicutes was decreased. Among them, higher relative abundance of anaerobic bacteria such as Romboutsia, Clostridium_Sensu_Stricto_1, norank_f_Barnesiellaceae, and Unclassified_o_Bacteroidales were observed in the MgH2 supplementation group. In addition, significant changes in the levels of several intestinal metabolites including N(6)-Methyllysine, irinotecan, capsidiol, taurochenodeoxycholate-7-sulfate, prostaglandin F1a, and caffeic acid 3-glucoside was observed in MgH2 supplementation group. And changes in intestinal microbiota were significantly correlated with changes in metabolite levels. Overall, dietary supplementation with MgH2 (20 mg/kg hydrogen molecules) exhibits positive effects on M. salmoides farming based on growth performance, intestinal histology, intestinal microbiota, and metabolites explored in the present study. |
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| ISSN: | 2352-5134 |