제주지역 양돈장에서 발생한 자돈 설사형 바이러스의 면역조직화학적 확인

Immunohistochemical study of causative agents for the porcine viral diarrhea disease on newborn piglets in Cheju

In an outbreak of acute porcine diarrhea in newborn piglets, an etiological study was carried out using piglets submitted in Cheju Province Institute for Livestock Promotion(Cheju Veterinary Service for the disease diagnosis). Sixteen piglets(2-7 days old) were collected from 4 farms during outbreaks of diarrhea disease(from January to April 2000). Specimens were taken after necropsy and examined by immunohistochemistry using of monoclonal antibodies for porcine epidemic diarrhea(PED) virus, transmissible gastroenteritis(TGE) virus, and porcine rotavirus. Immunohistochemistry showed that PED virus antigens, but both TGE virus and rota virus antigens not, were localized in the some epithelial cells of the intestines of 14 animals among 16 piglets examined. PEB virus antigens were mainly detected in the cytoplasm of enterocytes. Infected cells, which were most abundant in the villous epithelial cells of the jejunum and ileum, were uncommon in the crypt, epithelial cells, the lamina propria and Peyer's patches of piglets examined. The results suggest that PED virus is one of the most prevailing agents in an outbreak of fatal diarrhea in newborn piglets on Cheju island and PED virus was need to further study to prevent this disease.