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J Med Microbiol 53 (2004), 309-312; DOI: 10.1099/jmm.0.05403-0
© 2004 Society for General Microbiology
ISSN 0022-2615

Extensive intestinal spirochaetosis in pigs challenged with Brachyspira pilosicoli

Tim K. Jensen, Mette Boye and Kristian Møller

Danish Veterinary Institute, Bülowsvej 27, DK-1790 Copenhagen V, Denmark

Correspondence Tim K. Jensen tkj{at}DFVF.dk

Received July 31, 2003
Accepted November 14, 2003

A field isolate of Brachyspira pilosicoli, the aetiological agent of porcine intestinal spirochaetosis, was inoculated by stomach tube into six 6-week-old pigs. All animals developed loose to watery faeces and were killed successively on days 8, 14 or 17 post-inoculation (day 17 being the end of the study). Mild mucosal reddening and flecks of pus characterized the gross lesions, while diffuse, catarrhal colitis was revealed microscopically in all animals. Intestinal spirochaetosis with moderate to densely packed end-attached B. pilosicoli organisms was revealed extensively on the mucosal surface of the large intestines by light microscopy and fluorescent in situ hybridization. This study is the first to report extensive intestinal spirochaetosis in pigs challenged with B. pilosicoli.

This paper was presented at the Second International Conference on Colonic Spirochaetal Infections in Animals and Humans, Edinburgh, UK, 2–4 April 2003.

Abbreviation: p.i., post-inoculation.






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