Characteristics and antimicrobial susceptibility of Escherichia coli isolated from horse
2010
Yun, S.W., Kyungpook National University, Daegu, Republic of Korea | Kwon, D.Y., Korea Food and Drug Administration, Seoul, Republic of Korea | Choi, S.K., Kyungpook National University, Daegu, Republic of Korea | Lee, H.S., National Veterinary Research and Quarantine Service, Anyang, Republic of Korea | Cho, G.J., Kyungpook National University, Daegu, Republic of Korea
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.
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