학술논문
Occurrence of CTX-M-producing Escherichia coli from in broilers with colibacillosis
이용수 6
- 영문명
- Occurrence of CTX-M-producing Escherichia coli from in broilers with colibacillosis
- 발행기관
- 한국예방수의학회
- 저자명
- Young Ju Lee
- 간행물 정보
- 『Journal of Preventive Veterinary Medicine』Vol.46, No.3, 178~181쪽, 전체 4쪽
- 주제분류
- 의약학 > 기타의약학
- 파일형태
- 발행일자
- 2022.09.30
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국문 초록
영문 초록
Avian colibacillosis is severe respiratory and systemic disease caused by avian pathogenic E. coli (APEC). The disease results in economic loss because of early mortality and reduced productivity in chickens. Several antimicrobials have been used extensively for reducing the losses due to colibacillosis. β-lactams, including penicillin derivatives, cephalosporins, and carbapenems, are one of the most commonly used, clinically important antibiotics. In this study, the phenotypic and genotypic characteristics of 14 CTX-M-producing APEC were investigated. Two types of CTX-M genes were detected, namely, CTX-M-1 gene (8 isolates) and CTX-M-15 gene (6 isolates), and all CTX-M-producing APEC were multidrug resistant. Moreover, 10 of the 14 CTX-M-producing E. coli isolates carried the TEM-1 gene, and 8 of the 14 isolates contained class 1 integrons. The following three different gene cassette arrangements were identified in six isolates: aadA1 (n=2), dfrA1 (n=2), and aadA1+dfrA1 (n=2). All CTX-M-producing APEC isolates harbored IncF plasmids, including F, FII, FIA, and FIB. CTX-M-1 gene was located on I1, F, and FIB, and CTX-M-15 gene on FII, FIA, and FIB. The findings from this study indicate that E. coli carrying CTX-M gene are circulating in the broiler poultry industry. Comprehensive surveillance and persistent monitoring of the integrated broiler operations are warranted to prevent the dissemination of resistant isolates.
목차
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- Occurrence of CTX-M-producing Escherichia coli from in broilers with colibacillosis
- Journal of Preventive Veterinary Medicine Vol.46, No.3 목차
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