浙江农业学报 ›› 2022, Vol. 34 ›› Issue (7): 1386-1395.DOI: 10.3969/j.issn.1004-1524.2022.07.05

• 动物科学 • 上一篇    下一篇

志贺氏菌噬菌体ΦDS8对患病肉鸡的治疗及其肠道菌群的影响

陈诗雨1,2(), 徐美余1,2, 邓征宇1,2, 王峰1,2, 张麒麟1,2, 邓先余1,2, 林连兵1,2,*()   

  1. 1.昆明理工大学 生命科学与技术学院,云南 昆明 650500
    2.云南省高校饲用抗生素替代技术工程研究中心,云南 昆明 650500
  • 收稿日期:2021-04-22 出版日期:2022-07-25 发布日期:2022-07-26
  • 通讯作者: 林连兵
  • 作者简介:* 林连兵,E-mail: linlb@kmust.edu.cn
    陈诗雨(1997—),女,安徽铜陵人,硕士研究生,研究方向为生物制药。E-mail: 1789611985@qq.com
  • 基金资助:
    云南省高校饲用抗生素替代技术工程研究中心

Treatment of diseased broilers with Shigella bacteriophage ΦDS8 and the effect on their intestinal flora

CHEN Shiyu1,2(), XU Meiyu1,2, DENG Zhengyu1,2, WANG Feng1,2, ZHANG Qilin1,2, DENG Xianyu1,2, LIN Lianbing1,2,*()   

  1. 1. Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
    2. Engineering Research Center for Replacement Technology of Feed Antibiotics of Yunnan College, Kunming 650500, China
  • Received:2021-04-22 Online:2022-07-25 Published:2022-07-26
  • Contact: LIN Lianbing

摘要:

志贺氏菌是一种常见的肠道致病菌,其引起的细菌病是危害公共卫生的人畜共患病之一。随着抗生素的滥用,志贺氏菌耐药性的问题难以控制,急需新的方法来解决,采用噬菌体杀灭耐药性细菌已日益受到重视。本研究建立肉鸡感染志贺氏菌模型,分别采用感染前2 h灌喂噬菌体液预防和感染2 h后灌喂噬菌体液两种方法对肉鸡进行治疗。灌喂志贺氏菌2 h后的肉鸡均出现腹泻状况,粪便中志贺氏菌含量最高达到1×107 CFU·g-1,优势菌群含量大幅下降,有害菌群占比上升。噬菌体治疗后,肉鸡粪便中噬菌体含量上升,志贺氏菌含量下降,粪便性状及肠道菌群恢复正常,且肉鸡存活率100%。没有噬菌体治疗的肉鸡存活率60%,解剖观察发现器官病变明显。噬菌体ΦDS8在治疗志贺氏菌株感染方面有良好的效果,其作为抗生素替代产品有较好的应用价值和前景。

关键词: 志贺氏菌, 噬菌体, 肉鸡, 肠道菌群

Abstract:

Shigella is a common enteric pathogenic bacterium, and the bacterial disease it causes is one of the zoonotic diseases that endanger public health safety. With the misuse of antibiotics, the problem of Shigella resistance is difficult to control and new approaches are urgently needed to solve it. The use of bacteriophages to kill drug-resistant bacteria has received increasing attention. In this study, the Shigella infection model of broiler chickens was established. The broiler chickens were treated with phage fluid 2 h before and after infection. The broilers fed with Shigella for 2 h all had diarrhea, with the highest Shigella content in feces of 1×107 CFU·g-1, a large decrease in the content of dominant flora and a rise in the proportion of harmful flora. After phage therapy, the fecal phage content of broilers increased, Shigella content decreased, the fecal traits and intestinal flora returned to the normal, and the broiler survival rate was 100%. The survival rate of broiler chickens without phage treatment was 60%, and anatomical observation revealed obvious organ lesions. Bacteriophage ΦDS8 has shown promising efficacy in the treatment of Shigella strain infection, and it has good application value and prospect as an alternative product to antibiotics.

Key words: Shigella, bacteriophage, broiler, becal microflora

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