期刊
MICROORGANISMS
卷 9, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/microorganisms9061288
关键词
eating disorders; feeding behavior; gut microbiota; Siniperca chuatsi; innate immunity; appetite; Lactobacillus plantarum; Lactobacillus rhamnosus; Clostridium butyricum
类别
资金
- Guangdong Province Key Field RD Program [20200202]
- Guangdong Basic and Applied Basic Research Foundation [2019B1515120072]
- State Guides the Local Science and Technology Development Special Funding Project in 2021 (Construction of Germ plasm Resource Bank of Micropterus salmoides and Siniperca chuatsi in Guangdong Province)
- Research in Spreading and Breeding Feedstuff of a New Breed of Siniperca chuatsi x Siniperca scherzeri [2019A2]
The study found that the addition of three probiotics to the culture water can improve intestinal health and immunity of mandarin fish, significantly alleviating eating disorders caused by pellet feeding.
Eating disorders are directly or indirectly influenced by gut microbiota and innate immunity. Probiotics have been shown to regulate gut microbiota and stimulate immunity in a variety of species. In this study, three kinds of probiotics, namely, Lactobacillus plantarum, Lactobacillus rhamnosus and Clostridium butyricum, were selected for the experiment. The results showed that the addition of three probiotics at a concentration of 10(8) colony forming unit/mL to the culture water significantly increased the ratio of the pellet feed recipients and survival rate of mandarin fish (Siniperca chuatsi) under pellet-feed feeding. In addition, the three kinds of probiotics reversed the decrease in serum lysozyme and immunoglobulin M content, the decrease in the activity of antioxidant enzymes glutathione and catalase and the decrease in the expression of the appetite-stimulating regulator agouti gene-related protein of mandarin fish caused by pellet-feed feeding. In terms of intestinal health, the three probiotics reduced the abundance of pathogenic bacteria Aeromonas in the gut microbiota and increased the height of intestinal villi and the thickness of foregut basement membrane of mandarin fish under pellet-feed feeding. In general, the addition of the three probiotics can significantly improve eating disorders of mandarin fish caused by pellet feeding.
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