Ligilactobacillus salivarius XP132 with antibacterial and immunomodulatory activities inhibits horizontal and vertical transmission of Salmonella Pullorum in chickens

文献类型： 外文期刊

第一作者： He, Tana

作者： He, Tana;Hu, Xinyun;Mi, Jielan;Hu, Hongjiao;Wang, He;Qi, Xiaole;Gao, Li;Zhang, Yanping;Liu, Changjun;Wang, Suyan;Chen, Yuntong;Wang, Xiaomei;Gao, Yulong;Cui, Hongyu;He, Tana;Yang, Guilian;Wang, Xiaomei;Gao, Yulong;Cui, Hongyu

作者机构：

关键词： ligilactobacillus salivarius; Salmonella Pullorum; antibacterial activity; horizontal transmission; vertical transmission

期刊名称：POULTRY SCIENCE （ 影响因子：3.8； 五年影响因子：4.1 ）

ISSN： 0032-5791

年卷期： 2024 年 103 卷 10 期

页码：

收录情况： SCI

摘要： Probiotics are increasingly recognized for their capacity to combat pathogenic bacteria. In this study, we isolated a strain of Ligilactobacillus salivarius XP132 from the gut microbiota of healthy chickens. This strain exhibited resistance to low pH and bile salts, auto-aggregation capabilities, and the ability to co- aggregate with pathogenic Salmonella. . The in vitro antibacterial activity of Ligilactobacillus salivarius XP132 was tested using an Oxford cup antibacterial test, and the results showed that Ligilactobacillus salivarius XP132 exhibited broad-spectrum antibacterial activity, with especially strong antibacterial activity against Salmonella. . In animal experiments with white feather broilers and specific-pathogens-free (SPF) chickens, we orally administered 1 pound 109 9 CFU XP132 live bacteria per chicken per day, and detected the content of Salmonella in the liver, spleen, intestinal contents, and eggs of the chickens by RT-qPCR. Oral administration of Lactobacillus salivarius XP132 group significantly reduced the levels of Salmonella in chicken liver, spleen, intestinal contents and eggs, and the oral administration of Ligilactobacillus salivarius XP132 significantly inhibited the horizontal and vertical transmission of Salmonella in SPF chickens and white-feathered broilers. After oral administration of XP132, the production of chicken serum anti-infective cytokine IFN-g was also significantly up-regulated, thereby enhancing the host's ability to resist infection. In addition, the production of various serum inflammatory cytokines, including IL-1b, IL-6, IL-8, and TNF-a, was down-regulated, leading to significant amelioration of the inflammatory response induced by S. Pullorum in chickens. These findings suggest that Ligilactobacillus salivarius XP132 possesses potent antibacterial and immunomodulatory properties that effectively prevent both horizontal and vertical transmission of Salmonella Pullorum, highlighting its potential as a valuable tool for the prevention and control of Salmonella disease.

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