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Epizootiologic evaluation on equine coital exanthema in Korea

국내 발생 말구진의 역학적 평가

  • Yang, Jaehyuk (Jeju Race Park, Korea Racing Authority) ;
  • Lim, Yoon-Kyu (College of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University)
  • 양재혁 (한국마사회) ;
  • 임윤규 (제주대학교 수의과대학 및 수의과학연구소)
  • Received : 2011.07.04
  • Accepted : 2012.03.06
  • Published : 2012.03.30

Abstract

This study evaluated the epizootiological characteristics of equine coital exanthema (ECE) in South Korea. A PCR test was used to determine the equine herpesvirus 3 (EHV-3) release period, excretion by suckling foals, morbidity rate, effect on fertility, and onset of breeding partner after treatment. The morbidity rate of ECE based on clinical symptoms was 8.3% (2/24) for stallions and 10.8% (45/416) for mares, and 29 of 45 (64.4%) animals were positive on the PCR test. Ten (22%) broodmares had symptoms before breeding, while 26 (58%) had symptoms after breeding. Nine (20%) mares had uncertain coverage periods and occurrence times. Suckling foals had no clinical findings and EHV-3 was not detected in their nostrils, although it was detected on teasers. No lesions were observed in the clitoral fossa on broodmares, although EHV-3 was detected by PCR. The period of EHV-3 emission was 22~23, 18~19, 6, and 58 days in stallions, broodmares, teasers, and mares with a mixed E. coli-like infection, respectively. ECE had no negative effects on the breeding capability of stallions and no symptoms were observed in broodmares after recovering from ECE.