Korean Journal of Veterinary Research 2005;45(1):55-61.
Seroprevalence of Mycoplasma hyopneumoniae infection in Korean swine herds
Hye-kwon Kim1, Tae-yung Kim1, Jong-sung Lim2, Yang-ho Lee2, Bong-kyun Park1
1College of Veterinary Medicine, Seoul National University
2Merial Korea Ltd.
우리나라 양돈장에서 Mycoplasma hyopneumoniae 유병율 조사
김혜권1, 김태융1, 임종성2, 이양호2, 박봉균1
1서울대학교 수의과대학
2메리알 코리아(주)
Abstract
Serum samples of 1,175 pigs from 148 Korean swine farms not using Mycoplasma hyopneumoniae (M. hyo) vaccines were collected for seroepidemiological study of M. hyo infection by indirect ELISA method. Informations of each farm were provided about province where the farm was located and season when blood samples were collected. Then, the selected farms were divided into farm units which had 5 serum samples according to production stages : sow, suckling piglet (<30 days old), nursery pig (30-70 days old), and growing pig (>70 days old). Seroprevalence of M. hyo infection according to production stages, province, and season was investigated by using ELISA-positve rate of the selected samples for each study. This study showed that 85.34% (78.94-91.78%, 95% CI) of farms were positive to M. hyo infection and 34.81% (32.09-37.53%, 95% CI) among pigs were sero-positive to M. hyo infection in Korean swine farms. In the study of seroprevalence by production stage, most farms had sows and growing pigs which were sero-positive to M. hyo infection (sow: 83.05%, growing pigs: 87.72%) and most pigs seemed to be naturally infected by M. hyo at 8-10 weeks of age. Also, M. hyo infection showed seasonal pattern that most pigs were infected in late fall to early winter. However, in the study of seroprevalence by province, there was no significant correlation between province and M. hyo sero-positive rate.
Key Words: Mycoplasma hyopneumoniae, Seroprevalence, ELISA, Korean swine herds


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