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**Found in preputial mucosa of healthy boars+**Anaerobic+**Coryneform morphology+**Produces urease+**3mm diameter colonies with shiny raised centre and dull edge+**Disease transmitted at coitus +**Sows develop disease within 3-4 weeks of mating+**Produces lesions in urinary tract of sows+**Cystitis and pyelonephritis in sows+**Anoreixa, arching of back, dysuria and haematuria+**May be fatal+
===''Actinobaculum suis''===
===''Actinobaculum suis''===
−*Found in preputial mucosa of healthy boars
−*Anaerobic
−*Coryneform morphology
−*Produces urease
−*3mm diameter colonies with shiny raised centre and dull edge
−*Disease transmitted at coitus
−*Sows develop disease within 3-4 weeks of mating
−*Produces lesions in urinary tract of sows
−*Cystitis and pyelonephritis in sows
−*Anoreixa, arching of back, dysuria and haematuria
−*May be fatal
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===''Dermatophilus congolensis''===
===''Dermatophilus congolensis''===
+*Filamentous, branching actinomycete
*Aerobic
*Aerobic
−*Motile zoospores
+*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
+*Dermatophilosis most prevalent in tropical and subtropical regions
+*Organisms found in scabs and in foci in skin of carrier animals
+*Dormant zoospores become activated when moisture and temperature levels favourable
+*Zoospores may survive 3 years in scabs
+*Pathogenicity:
+**Does not usually invade healthy skin
+**Entrance after trauma or persistent wetting
+**Activated zoospores produce germ tubes which develop into filaments which invade the epidermis
+**Invasion causes an accute inflammatory response with many neutrophils
+**Microabscesses are formed in the skin