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Porcine intestinal spirochaetosis is a notifiable pig disease caused by the bacterium ''Brachyspira pilosicoli''. Infection causes mild gastrointestinal signs in young pigs and intestinal spirochetosis in humans, as it is a zoonosis. The disease is widespread in pig-rearing countries and may be referred to as PIS, spirochaetal diarrhoea and porcine colonic spirochaetosis. ==Clinical signs and diagnosis== Clinical signs are most commonly seen in young pigs aged eight to 14 weeks. Normally, a greyish diarrhoea is seen in individual piglets, and poor growth rates and feed conversion ratios are observed on a herd level. Stress, caused by moving and mixing groups of piglets, can increase incidence. A definitive diagnosis can be made by culturing the bacterium on a specific blood agar medium, followed by PCR. Alternatively, necropsy and histological examination of the large intestine can confirm the diagnosis. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Porcine intestinal spirochaetosis」の詳細全文を読む スポンサード リンク
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