| Toxoplasmosis in piglets |
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In-soon Roh1, Jeong-hee Han1, Jae-hoon Kim2, Byeong-woo Ahn3 |
1Department of Veterinary Medicine, Kangwon National University
2National Veterinary Research Institute
3Korean Food and Drug Administration |
| 자돈의 톡소플라즈마증 발생 |
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노인순1, 한정희1, 김재훈2, 안병우3 |
1강원대학교 수의학과
2수의과학연구소
3식품의약품 안전본부 |
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| Abstract |
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Suckling piglets and weaned pigs showed anorexia, dehydration, severe abdominal breathing, emaciation and paresis from Oct. 1993. to Nov. 1993. Five 2-week-old piglets were submitted for diagnosis in Kangwon National University. At necropsy, the pin-point well demarcated yellowish white foci were scattered on the surface of the lung, heart, liver, spleen and kidney. Histologically, multifocal areas of necrosis with mononuclear cells infiltration were found in the lung, heart, liver, lymph node, spleen, kidney and small intestine. These lesions tended to be associated with blood vessels. Variable round to ovoid tachyzoites were located at the periphery of the lesions. The organisms were demonstrated as Toxoplasma gondii by immunohistochemical staining method. Ultrastructurally, this parasite was surrounded with parasitophorous vacuole in alveolar macrophage. The parasite was crescent-shaped and $6{sim}8{ imes}1{sim}2{mu}m$ in size. It was enclosed by an thick outer membrane and an underlying thin inner membrane. Several club-shaped paired organelles and conoids lay in the cytoplasm at the anterior. Numerous round body and one to several mitochondria were presented in the cytoplasm. Based on the gross findings, histopathology, immunohistochemical and electron microscopic findings, this case was diagnosed as toxoplasmosis in piglets. |
| Key Words:
toxoplasmosis, Toxoplasma gondii, tachyzoite, piglets |
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