Postweaning Multisystemic Wasting Syndrome (PMWS)에 이환된 자돈에 대해 Porcine circovirus 2 Rep 유전자 검출에 관한 연구 = Studies on detection of porcine circovirus 2 Rep gene from the piglets affected with PMWS

다국어 초록 (Multilingual Abstract)

Postweaning multisystemic wasting syndrome (PMWS) is a new emerging disease in swine herds world wide, and porcine circovirus type 2 (PCV2) is known as a major cause of PMWS. In this study, the prevalence of PCV2 Rep gene was examined for the serum, nasal swabs and feces collected from 30 heads of piglets affected with PMWS and 10 heads of normal healthy piglets using polymerase chain reaction (PCR). The diagnostic efficiency of the PCR was evaluated for different types of samples. Rep gene of the isolate (PCV2 S1) was then sequenced. In the group of PMWS-affected piglets, the prevalence of PCR-positive were 70.0% in sera, 33.3% in nasal swabs and 0% in feces. In the normal healthy group, the PCR-positive rates of sera, nasal swabs and feces were 30%, 20% and 0%, respectively. Seven piglets (17.5%) out of 40 showed the simultaneously positive results in both of sera and nasal swabs. The nucleotide sequence homology of Rep gene of PCV2 S1 as compared with the reference strain of PCV2 (GenBank accesson no.AF027217) was 99.3%.