| Autor: |
Yu, Guijuan, Zhao, Sifan, Ou, Weihao, Ai, Qinghui, Zhang, Wenbing, Mai, Kangsen, Zhang, Yanjiao |
| Zdroj: |
Aquaculture Reports; April 2024, Vol. 35 Issue: 1 |
| Abstrakt: |
The development of host-derived probiotics offers an alternative nutritional strategy for aquaculture. Turbot (Scophthalmus maximusL.) is an important cultured fish in the world. However, research on its host-associated probiotics is limited. The present study evaluates the probiotic potential of Bacillus velezensisT20 (T20) isolated from the intestine of turbot. In the experiment, turbots were fed with two diets: the control diet (CON) and CON supplemented with 1 × 108CFU/g T20 for 8 weeks. Results showed that the addition of T20 did not affect the growth performance of turbot, but significantly decreased the mortality of turbot challenged by Edwardsiella tarda. Moreover, T20 could survive in the intestine of turbot, it might contribute to the improved intestinal antioxidant capacity, physical barrier and digestive enzymes activities of turbot. In terms of intestinal microbiota, T20 modulated intestinal microbiota communities. Specifically, T20 increased the relative abundances of Bacillusand B. velezensisin both intestinal mucosa and digesta, and decreased potential pathogen such as Mycoplasma, Staphylococcusand Weissellain intestinal digesta. In conclusion, the present study showed that dietary B. velezensisT20 could enhance the disease resistance, improve the communities of intestinal microbiota and promote the intestinal health of turbot. |
| Databáze: |
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