期刊
FISH & SHELLFISH IMMUNOLOGY
卷 131, 期 -, 页码 991-998出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.fsi.2022.11.012
关键词
Rhodobacter azotoformans; Eriocheir sinensis; Citrobacteriosis; Protective effects
资金
- Earmarked Fund for China Agriculture Research System [CARS-48]
- Open Fund of Shandong Key Laboratory of Disease Control in Mariculture [KF202001]
This study revealed the protective effects of Rhodobacter probiotics, specifically R. azotoformans, against citrobacteriosis in Chinese mitten crab. The supplementation of R. azotoformans significantly improved growth performance, serum immunity, hepatopancreatic antioxidant status, intestinal microbial abundance and diversity in E. sinensis, and enhanced the resistance to C. freundii challenge.
Rhodobacter probiotics are considered as good alternatives to antibiotics for aquaculture. Yet the beneficial ef-fects of Rhodobacter on Chinese mitten crab Eriocheir sinensis are still unclear, and more functions of Rhodobacter supplementation need to be clarified. In this study, a 60-day feeding trial was performed to investigate the protective effects of R. azotoformans against citrobacteriosis in E. sinensis by growth performance, serum im-munity, hepatopancreatic antioxidant capability, intestinal flora, and resistance to Citrobacter freundii challenge assays. The results showed that R. azotoformans supplementation significantly and dose-dependently increased weight gain and specific growth rate as well as activities of serum immune and hepatopancreatic antioxidant enzymes, leading to notable improvement in the growth performance, serum immunity and hepatopancreatic antioxidant status of E. sinensis. Besides, R. azotoformans supplementation significantly enhanced intestinal mi-crobial abundance and diversity in E. sinensis, and conferred significant protection of the crabs against C. freundii challenge with seven-day survival rates of 70.0%-100.0%. To the best of our knowledge, this is the first study to reveal the protective effects of R. azotoformans against citrobacteriosis in E. sinensis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据