Case of porcine proliferative enteropathy in fattening pigs
2019
Tsuruta, Y. (Yamaguchi Prefectural Chubu Livestock Hygiene Service Center, Yamaguchi (Japan)) | Yokoyama, A. | Narushige, H. | Sano, H. | Tashiro, H.
Three fattening pigs died of tar-like diarrhea (in January 28, 2019). We examined these dead pigs. Histopathologically the ileum to colon showed crypt epithelial hyperplasia (No. 1-3) and crypt abscess (No. 1-3). Worthin- Starley staining showed curved bacilli in the fovealcrypt epithelium in jejunum (No.1), ileum (No.1-3), cecum (No. 1, 2), colon (No.1, 2), rectum (No.2). Immunohistochemically, the bacilli were reacted with anti-Li mouse serum in jejunum (No.1), ileum (No.1-3), cecum (No.1-3), colon (No.1, 2), rectum (No.1). Lawsonia intracellularis genes were detected in jejunum (No. 1), ileum (No. 3), cecum (No.1, 2), colon (No. 1), and rectum (No. 2). Based on the above results, they were diagnosed with porcine proliferative enteropathy. In this farm, it was considered that deterioration of the hygiene condition of the farm and reduction of the immune function of piglets were the causes of the onset.
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