Korean J Vet Res > Volume 54(3); 2014 > Article
Korean Journal of Veterinary Research 2014;54(3):131-137.
DOI: https://doi.org/10.14405/kjvr.2014.54.3.131    Published online September 24, 2014.
Antimicrobial resistance of Escherichia coli isolated from healthy animals during 2010-2012
Suk-Kyung Lim1, Hyang-Mi Nam1, Dong-Chan Moon1, Geum-Chan Jang1, Suk-Chan Jung1, Veterinary Korean2
1Animal and Plant Quarantine Agency
2Veterinary Service Laboratory, Research Institute of Public Health and Environment
건강한 가축에서 분리한 Escherichia coli의 항생제 내성 조사(2010~2012년)
임숙경1, 남향미1, 문동찬1, 장금찬1, 정석찬1, 시,도시험소및보건환경연구원항생제내성모니터링담당자2
2가축위생시험소 및 보건환경연구원
The purpose of present study was to investigate the antimicrobial resistance in Escherichia coli isolated from healthy animals in all provinces of the Republic of Korea. A total of 2,085 E. coli strains isolated from 11,336 fecal samples of healthy animals during 2010-2012 were examined for antimicrobial resistance. Comparison of average resistance rate through the years revealed that tetracycline (47.0% and 76.1%) and streptomycin resistance (42.6% and 64.6%) was most frequently observed in cattle and pigs, respectively. Whereas, in chicken isolates, resistance against nalidixic acid (90.9%) was highest among the antimicrobials tested. Percentage of E. coli that showed multidrug resistance (resistance against ${geq}$ three subclasses of antimicrobial agents) was 17.6% (151/860) in cattle, 69.4% (506/729) in pigs, and 86.1% (427/496) in chickens. Overall, the rates of resistance are apparently different between animal species and, in particular, resistance was less prevalent in cattle than in pigs and chickens. In conclusion, this study showed higher prevalence of resistance in commensal E. coli strains to antimicrobial agents in Korean livestock and highlighted the urgent need for measures to regulate the abuse of antimicrobial agents.
Key Words: animals, antimicrobial resistance, Escherichia coli

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