Difference between revisions of "Brachyspira hyodysenteriae"
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**PCR | **PCR | ||
[[Category:Brachyspira and Serpulina]][[Category:Pig]] | [[Category:Brachyspira and Serpulina]][[Category:Pig]] | ||
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Revision as of 11:01, 25 June 2010
- An anaerobic spirochaete.
- 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