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***Found naturally in oral cavity of cattle
***Found naturally in oral cavity of cattle
***Prefers anaerobic conditions but not strict anaerobe
***Prefers anaerobic conditions but not strict anaerobe
***Penetrates injured tissues to cause [[General Pathology - Chronic Inflammation#Granulomatous Inflammation|granulomatous inflammation]] lesions of soft tissues and bone, causing [[Oral Cavity - Teeth#Mandibular Osteomyelitis|lumpy jaw]]
***Entry of organism into tissues following trauma to the mucosa from rough feed or tooth eruption
***Causes [[General Pathology - Chronic Inflammation#Granulomatous Inflammation|granulomatous inflammation]] of soft tissues and bone, causing [[Oral Cavity - Teeth#Mandibular Osteomyelitis|lumpy jaw]]
***Usually invades mandible to cause [[Bones - inflammatory#Osteomyelitis|osteomyelitis]] and may extend to surrounding [[Muscles - inflammatory#Actinomycosis bovis|muscles]]
***Usually invades mandible to cause [[Bones - inflammatory#Osteomyelitis|osteomyelitis]] and may extend to surrounding [[Muscles - inflammatory#Actinomycosis bovis|muscles]]
***The lesions begins as a painless swelling of the affected bone
***Swelling becomes more painful and enlarges over a number of weeks, gaining fistulous tracts which discharge pus
***Organisms found in yellow sulphur granules
***Organisms found in yellow sulphur granules
***Club colony formation
***Club colony formation
***Colonies adhere to agar media and are non-haemoltic
***Colonies adhere to agar media and are non-haemoltic
***Surgical treatment possible when lesions are small
***Prolonged parenteral penicillin treatment may be beneficial early in the disease
**''Actinomyces viscosus''
**''Actinomyces viscosus''
***Commensal of oral cavity of dogs and humans
***Commensal of oral cavity of dogs and humans
===''Actinobaculum suis''===
===''Actinobaculum suis''===
**Found in preputial mucosa of boars
**Found in preputial mucosa of healthy boars
**Anaerobic
**Anaerobic
**Coryneform morphology
**Coryneform morphology
**Produces urease
**Produces urease
**3mm diameter colonies with shiny raised centre and dull edge
**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
**Produces lesions in urinary tract of sows
**Cystitis and pyelonephritis in sows
**Cystitis and pyelonephritis in sows
**Anoreixa, arching of back, dysuria and haematuria
**May be fatal