›› 2019, Vol. 46 ›› Issue (1): 223-230.doi: 10.16431/j.cnki.1671-7236.2019.01.026

• Preventive Veterinary Medicine • Previous Articles     Next Articles

Detection of Sulfonamides Sensitivity and Analysis of Resistant Genes of Pasteurella multocida Isolated from Ducks

CHEN Hongmei1,2, CHENG Longfei2, DENG Hui3, LIU Rongchang2, FU Guanghua2, SHI Shaohua2, FU Qiuling2, WAN Chunhe2, ZHENG Qingli3, HUANG Yu2, HUANG Xiaohong3   

  1. 1. College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
    2. Fujian Animal Diseases Control Technology Center, Fujian Provincial Key Laboratory for Avian Diseases Control and Prevention, Institute of Animal Husbandry and Veterinary Medicine, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China;
    3. University Key Laboratory for Integrated Chinese Traditional and Western Veterinary Medicine and Animal Healthcare in Fujian Province, College of Animal Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
  • Received:2018-05-11 Online:2019-01-20 Published:2019-01-19

Abstract:

In order to understand the antimicrobial sensitibity to sulfonamides and distribution of sulfonamides resistance genes of Pasteurella multocida strains isolated from ducks in Fujian,Guangdong,Jiangxi,etc,89 Pasteurella multocida strains were tested for antimicrobial susceptibility to trimethoprim-sulfamethoxazole by agar dilution method, PCR method and multi-locus sequence typing (MLST) were used for detection of sulfonamides resistance genes and to analyze the genetic relationship among the sulfonamides-resistant strains.The results showed that 33 strains (37.1%) were resistant to trimethoprim-sulfamethoxazole.Among the 33 sulfonamides-resistant strains,the detection rates of sul1,sul2 and sul3 genes were 100%(33/33),97.0%(32/33) and 21.2%(7/33).The simultaneous detection rate of sul1 and sul2 genes were 97.0%(32/33).The simultaneous detection rate of sul1,sul2 and sul3 genes were 21.2%(7/33).All of the 33 sulfonamides-resistant strains belonged to the ST129 sequence type.The results indicated that there was sulfonamides resistance to Pasteurella multocida isolated from ducks,and all the sulfonamides-resistant strains,which belonged to the same sequence type ST129,carried sul1 resistant gene,most of sulfonamides-resistant strains carried sul1 and sul2 resistant genes,suggesting that it should be rationally used sulfonamides to prevent and cure the infection of Pasteurella multocida isolated from ducks in some areas of Fujian,Guangdong and Jiangxi,etc.

Key words: Pasteurella multocida; sulfonamides; MLST; sul1 gene; sul2 gene; sul3 gene

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