Category:Brachyspira and Serpulina

From WikiVet English
Revision as of 22:39, 14 May 2010 by Bara (talk | contribs) (Created page with '*Anaerobic, intestinal spirochaetes, found in normal and diseased pigs *Enterophogens of pigs *''B. hyodysenteriae, B. pilosicoli, B. innocens, Serpulina intermedia'' and ''S. mu…')
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Jump to navigation Jump to search
  • Anaerobic, intestinal spirochaetes, found in normal and diseased pigs
  • Enterophogens of pigs
  • B. hyodysenteriae, B. pilosicoli, B. innocens, Serpulina intermedia and S. murdochii occur in pigs
  • Carrier pigs shed B. hyodysenteriae for up to 3 months, acting as a source of infection for healthy pigs
  • Demonstrated in stained faecal smears or silver-stained histopathology sections
  • Cultured anaerobically on selective blood agar
  • Spirochaetes differentiated by pattern of haemolysis on blood agar as well as molecular techniques
  • Pathogenesis
    • Motility in mucous allows colonisation of pig intestine
    • Haemolytic and cytotoxic activiity important for virulence
    • Attachment of B. pilosicoli to epithelial cells of colonic mucosa disrupts their function and leads to their shedding and oedema
  • Clinical infections

Brachyspira hyodysenteriae


Brachyspira pilosicoli

    • B. pilosicoli causes porcine intestinal spirochaetosis
    • Infection is acquired via contaminated faeces
    • Disease spreads slowly through the herd
    • Dogs, rats, mice and flies may act as transport hosts
  • Clinical signs
    • B. pilosicoli causes less severe signs than swine dysentry; reduced feed conversion rates occur
  • Diagnosis
    • History, clinical signs and gross pathology
    • Anaerobic culture on blood agar with added antibiotics for at least 3 days
    • Immunofluorescence, DNA probes and biochemical tests
    • Serology using ELISA can be used on a herd basis
    • PCR

Pages in category "Brachyspira and Serpulina"

The following 2 pages are in this category, out of 2 total.