Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (7): 1386-1395.DOI: 10.3969/j.issn.1004-1524.2022.07.05

• Animal Science • Previous Articles     Next Articles

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

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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