Difference between revisions of "Brachyspira hyodysenteriae"

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**Serology using ELISA can be used on a herd basis
 
**Serology using ELISA can be used on a herd basis
 
**PCR
 
**PCR
 +
[[Category:Brachyspira and Serpulina]][[Category:Pig]]

Revision as of 22:41, 14 May 2010

  • An anaerobic spirochaete.
  • Causes swine dysentery.
    • B. hyodysenteriae causes swine dysentery
    • Infection is acquired via contaminated faeces
    • Disease spreads slowly through the herd
    • Dogs, rats, mice and flies may act as transport hosts
    • B. hyodysenteriae survives several weeks in moist faeces
  • Clinical signs
    • B. hyodysenteriae causes dysentry in weaned pigs 6-12 weeks old; pigs lose condition and become emaciated; appetite is decreased; large amount of mucous may be present in the faeces; low mortality; poor feed conversion ratio
  • Diagnosis
    • History, clinical signs and gross pathology
    • Anaerobic culture on blood agar with added antibiotics for at least 3 days
    • B. hyodysenteriae causes complete haemolysis whereas other spirochaetes cause partial haemolysis
    • Immunofluorescence, DNA probes and biochemical tests
    • Serology using ELISA can be used on a herd basis
    • PCR