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Journal of veterinary science v.8 no.3, 2007년, pp.243 - 247  

Antimicrobial susceptibility and molecular detection of chloramphenicol and florfenicol resistance among Escherichia coli isolates from diseased chickens

Li, Xin-Sheng    (College of Animal Husbandry and Veterinary Science, Henan Agricultural University, Zhengzhou 450002, P.R. China.   ); Wang, Gui-Qin    (Department of Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, Beijing 100094, P.R. China.   ); Du, Xiang-Dang    (College of Animal Husbandry and Veterinary Science, Henan Agricultural University, Zhengzhou 450002, P.R. China.   ); Cui, Bao-An    (College of Animal Husbandry and Veterinary Science, Henan Agricultural University, Zhengzhou 450002, P.R. China.   ); Zhang, Su-Mei    (College of Animal Husbandry and Veterinary Science, Henan Agricultural University, Zhengzhou 450002, P.R. China.   ); Shen, Jian-Zhong    (Department of Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, Beijing 100094, P.R. China.  );
  • 초록

    Seventy Escherichia coli isolates recovered from diseased chickens diagnosed with colibacillosis in Henan Province, China, between 2004 and 2005 were characterized for antimicrobial susceptibility profiles via a broth doubling dilution method. Overall, the isolates displayed resistance to trimethoprim-sulfamethoxazole (100%), oxytetracycline (100%), ampicillin (83%), enrofloxacin (83%), and ciprofloxacin (81%), respectively. Among the phenicols, resistance was approximately 79% and 29% for chloramphenicol and florfenicol, respectively. Molecular detection revealed that the incidence rates of the floR , cmlA , cat1 , cat2 and cat3 were 29, 31, 16, 13, and 0%, respectively. Additionally, 10% of the isolates were positive for both floR and cmlA . As these antimicrobial agents may potentially induce cross-resistance between animal and human bacterial pathogens, their prudent use in veterinary medicine is highly recommended.


  • 주제어

    antimicrobial resistance .   Escherichia coli .   florfenicol.  

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