Korean Journal of Veterinary Research 2010;50(3):231-237.
Characteristics and antimicrobial susceptibility of Escherichia coli isolated from horse
Sung-Wook Yun1, Do-Yeon Kwon2, Seong-kyoon Choi1, Hee-Soo Lee3, Gil-Jae Cho1
1College of Veterinary Medicine, Kyungpook National University
2Korea Food & Drug Administration
3National Veterinary Research & Quarantine Service
말에서 분리한 Escherichia coli의 특성 및 항생제 감수성
윤성욱1, 권도연2, 최성균1, 이희수3, 조길재1
1경북대학교 수의과대학
This study was conducted to investigate characteristics and antimicrobial susceptibility of Escherichia (E.) coli isolates isolated from vaginal mucosa and clitorial fossa of 105 Thoroughbred mares suspicious of the genital disease in Korea during the period from March 2006 to July 2007. Ninety six E. coli isolates were identified as standard biochemical properties and using BIOLOG system. Fifty three isolates (55.2%) could be classified into a total of 21 O serotypes and forty three isolates (44.8%) were non-typeable with 51 O antisera used in this study. The verotoxin 1 (VT 1) and verotoxin 2 genes were analyzed by multiplex PCR. Among them, one isolate was detected VT 1 gene (130 bp). Most of isolates showed a high susceptibility in ciprofloxacin (100%), enrofloxacin (100%), norfloxacin (100%), cefoxitin (96.9%), gentamicin (96.9%), sulphamethoxazole (96.9%), nitrofurantoin (94.8%), amikacin (93.8%), nalidixic acid (92.7%) and tetracycline (90.6%). These results may provide the basic information to establish strategies for the treatment and prevention of reproductive disease in Thoroughbred mares in Korea.
Key Words: antimicrobial susceptibility, E. coli, Thoroughbred mare, verotoxin

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