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* An anaerobic spirochaete.
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* Causes [[Swine Dysentery|swine dysentery]].
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**Infection is acquired via contaminated faeces
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''Brachyspira hyodysenteriae'' is an anaerobic ''[[spirochaetes]]''. It is the cause of [[Swine Dysentery|swine dysentery]].
**Disease spreads slowly through the herd
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**Dogs, rats, mice and flies may act as transport hosts
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Infection of ''Brachyspira hyodysenteriae'' is acquired via contaminated faeces. Dogs, rats, mice and flies may act as transport hosts.
**''B. hyodysenteriae'' survives several weeks in moist faeces
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''B. hyodysenteriae'' survives several weeks in moist faeces. Carrier pigs shed ''B. hyodysenteriae'' for up to 3 months, acting as a source of infection for healthy pigs.
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*Clinical signs
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**''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
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*Diagnosis
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**History, clinical signs and gross pathology
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**Anaerobic culture on blood agar with added antibiotics for at least 3 days
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**''B. hyodysenteriae'' causes complete haemolysis whereas other spirochaetes cause partial haemolysis
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**Immunofluorescence, DNA probes and biochemical tests
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**Serology using ELISA can be used on a herd basis
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**PCR
   
[[Category:Brachyspira and Serpulina]][[Category:Pig]]
 
[[Category:Brachyspira and Serpulina]][[Category:Pig]]
[[Category:To_Do_-_Bacteria]]
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[[Category:To_Do_-_AimeeHicks]]
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