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인천지역 도축돈에서 돼지호흡기질병복합감염증의 육안적 폐병변과 원인체에 관한 연구
이창희 ( Chang Hee Lee ),황원무 ( Weon Moo Hwang ),이정구 ( Jung Goo Lee ),이성모 ( Sung Mo Lee ),김성재 ( Sung Jae Kim ),김남희 ( Nam Hee Kim ),양돈식 ( Don Sik Yang ),한정희 ( Jeong Hee Han ) 한국가축위생학회 2011 韓國家畜衛生學會誌 Vol.34 No.4
The purpose of this study was to investigate association with gross lesions and causative pathogens of porcine respiratory disease complex (PRDC) including porcine circovirus type 2 (PCV2), porcine reproductive and respiratory syndrome virus (PRRSV), swine influenza virus (SIV), Mycoplasma hyopneumoniae (MH), Pasteurella multocida (PM), Actinobacillus pleuropneumoniae (APP), Haemophilus parasuis (HP) in slaughtered pigs. A total of 1,200 lung samples were collected randomly from slaughtered pigs in Korea during August of 2010 through July of 2011. The gross lesions were classified according to the six stages (0, 1∼ 10, 11∼20, 21∼30, 31∼40 and ≥41, unit=%) and 48 samples from each stage were selected to detect viral and bacterial pathogens. The results according to the six stages were 100 (8.3%), 259 (21.6%), 326 (27.2%), 213 (17.8%), 144 (12.0%) and 158 (13.2%) cases, respectively. Prevalence of pneumonia according to season was 87.0∼96.7% and the highest prevalence was in spring. In detection of pathogens by PCR, 53 samples were not detected any causative pathogens of PRDC. PCV2, PRRSV, SIV, MH, PM, APP serotype 2, APP serotype 5 and HP were positive in 45.5%, 12.5%, 10.4%, 60.1%, 1.7%, 13.9%, 12.2% and 15.6%, respectively. In co-infection, PCV2-MH was the most detected causative pathogens of PRDC. The detection rate of PCV2 and PRRSV was the highest in spring, of SIV, MH and HP was in winter. The detection rate of APP-2 and APP-5 had no seasonal prevalence. The more severe gross lesions increased, the higher the detection rate showed.
김남희 ( Nam Hee Kim ),황원무 ( Weon Moo Hwang ),이정구 ( Jung Goo Lee ),이성모 ( Sung Mo Lee ),양돈식 ( Don Sik Yang ),이창희 ( Chang Hee Lee ),김성재 ( Sung Jae Kim ),한정희 ( Jeong Hee Han ) 한국가축위생학회 2011 韓國家畜衛生學會誌 Vol.34 No.4
The aims of this study were to assess the lung lesions and to compare gross observations with histopathological findings in the lungs of slaughter pigs. During August of 2010 through July of 2011, the 1,200 lung samples were randomly collected from slaughtered pigs in Korea. We examined prevalence of lung lesions and classified the lung lesion according to the severity of lung lesions. For the comparison of gross lesions with histopathological findings, BALT hyperplasia was also examined. Among the tested samples, 1,100 (91.7%) had pneumonic lung lesions. In the seasonal prevalence of pneumonic lung lesions, spring was the highest followed by winter, summer and autumn, respectively. The mean pneumonic score (mean±SD) was 21.37±17.87 and the highest gross lesion according to stages was 11∼20% (27.2%, 326/1,200). The prevalence of pleuritis was 7.0% and the highest prevalence was determined in summer. In severity, the lungs collected in this study were frequently in chronic stage (36.4%, 437/1,200), and it was shown that BALT hyperplasia was more extensive in chronic lesion. In this study, the prevalence of pneumonic lung lesions showed a high side and appeared particularly high in the spring. Severity of lung lesion was the most prevalent chronic lesions which were consistent with histopathologic findings.