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===''Actinobaculum suis''===
 
===''Actinobaculum suis''===
**Found in preputial mucosa of healthy boars
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*Found in preputial mucosa of healthy boars
**Anaerobic
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*Anaerobic
**Coryneform morphology
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*Coryneform morphology
**Produces urease
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*Produces urease
**3mm diameter colonies with shiny raised centre and dull edge
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*3mm diameter colonies with shiny raised centre and dull edge
**Disease transmitted at coitus  
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*Disease transmitted at coitus  
**Sows develop disease within 3-4 weeks of mating
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*Sows develop disease within 3-4 weeks of mating
**Produces lesions in urinary tract of sows
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*Produces lesions in urinary tract of sows
**Cystitis and pyelonephritis in sows
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*Cystitis and pyelonephritis in sows
**Anoreixa, arching of back, dysuria and haematuria
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*Anoreixa, arching of back, dysuria and haematuria
**May be fatal
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*May be fatal
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===''Dermatophilus congolensis''===
 
===''Dermatophilus congolensis''===
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*Filamentous, branching actinomycete
 
*Aerobic  
 
*Aerobic  
*Motile zoospores
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*Produces motile zoospores
 
*No growth on Sabouraud dextrose agar
 
*No growth on Sabouraud dextrose agar
*Found in scabs and in foci on skin of carrier animals
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*Dermatophilosis most prevalent in tropical and subtropical regions
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*Organisms found in scabs and in foci in skin of carrier animals
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*Dormant zoospores become activated when moisture and temperature levels favourable
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*Zoospores may survive 3 years in scabs
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*Pathogenicity:
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**Does not usually invade healthy skin
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**Entrance after trauma or persistent wetting
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**Activated zoospores produce germ tubes which develop into filaments which invade the epidermis
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**Invasion causes an accute inflammatory response with many neutrophils
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**Microabscesses are formed in the skin
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