Effects of dietary chitosan on growth, lipid metabolism, immune response and antioxidant-related gene expression in Misgurnus anguillicaudatus
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This study was performed to evaluate the effects of dietary chitosan supplementation on growth performance, lipid metabolism, gut microbial, antioxidant status and immune responses of juvenile loach (Misgurnus anguillicaudatus). Five experimental diets were formulated to contain graded levels of chitosan (0 (control), 0.5, 1, 2 and 5% CHI) for 50 days. Results of the present study showed that body weight gain was significantly higher in fish fed chitosan supplemented diets in dose dependent manner than control group. Increasing dietary chitosan levels reduced gut lipid content. Meanwhile the mRNA expression levels of intestine lipoprotein lipase and fatty acid binding protein 2 were significantly reduced with incremental dietary chitosan level. The percentages of total monounsaturated fatty acid decreased, while polyunsaturated fatty acid increased with dietary chitosan. The fish fed 0.5% CHI had higher mucus lysozyme activity (LZM) than those fed 0% CHI, but the LZM activity was significantly decreased with advancing chitosan supplement. The expression levels of superoxide dismutase, catalase and glutathione peroxidase revealed a similar trend, where the highest expressions were found in fish fed 5% CHI diet. In the term of intestine microbiota between 0 and 1% CHI groups, the proportion of bacteria in the phylum Bacteroidetes increased, whereas the proportion of bacteria in the phylum Firmicutes decreased as the fish supplemented chitosan. In conclusion, supplementation of chitosan improved growth performance, antioxidant status and immunological responses in loach.
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Effects of dietary chitosan on growth, lipid metabolism, immune response and antioxidant-related gene expression in Misgurnus anguillicaudatus
In: Beneficial MicrobesSearch for other papers by J. Yan in
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PubMed
Search for other papers by C. Guo in
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PubMed
Search for other papers by M.A.O. Dawood in
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PubMed
This study was performed to evaluate the effects of dietary chitosan supplementation on growth performance, lipid metabolism, gut microbial, antioxidant status and immune responses of juvenile loach (Misgurnus anguillicaudatus). Five experimental diets were formulated to contain graded levels of chitosan (0 (control), 0.5, 1, 2 and 5% CHI) for 50 days. Results of the present study showed that body weight gain was significantly higher in fish fed chitosan supplemented diets in dose dependent manner than control group. Increasing dietary chitosan levels reduced gut lipid content. Meanwhile the mRNA expression levels of intestine lipoprotein lipase and fatty acid binding protein 2 were significantly reduced with incremental dietary chitosan level. The percentages of total monounsaturated fatty acid decreased, while polyunsaturated fatty acid increased with dietary chitosan. The fish fed 0.5% CHI had higher mucus lysozyme activity (LZM) than those fed 0% CHI, but the LZM activity was significantly decreased with advancing chitosan supplement. The expression levels of superoxide dismutase, catalase and glutathione peroxidase revealed a similar trend, where the highest expressions were found in fish fed 5% CHI diet. In the term of intestine microbiota between 0 and 1% CHI groups, the proportion of bacteria in the phylum Bacteroidetes increased, whereas the proportion of bacteria in the phylum Firmicutes decreased as the fish supplemented chitosan. In conclusion, supplementation of chitosan improved growth performance, antioxidant status and immunological responses in loach.
| All Time | Past 365 days | Past 30 Days | |
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| Abstract Views | 928 | 573 | 37 |
| Full Text Views | 40 | 11 | 0 |
| PDF Views & Downloads | 38 | 18 | 0 |
