- Cause peritonitis in dogs and peritonitis in cattle and peritonitis in pigs
- Nocardia is involved in peritonitis and pleuritis in dogs
- Micropolyspora faeni and Thermactinomyces vulgaris in Bovine Farmers Lung
- Thermactinomyces vulgaris may cause COPD
- Actinomyces may cause granulomatous inflammation.
- E.g. Actinomyces bovis -the cause of lumpy jaw and in osteomyelitis, may extend to surrounding muscles
- Actinomyces pyogenes in osteomyelitis
- In pyothorax
- Isolated from closed cases of Poll Evil and Fistulous Withers
Overview
- Gram positive bacteria
- Grow slowly on media and produce branching filaments
- Opportunistic infections causing inflammatory responses and granulomatous reactions
- Animal pathogens include Actinomyces, Arcanobacterium, Actinobaculum, Nocardia and Dermatophilus
Actinomyces, Arcanobacterium and Actinobaculum species
- Non-motile, non-spore-forming bacteria
- Anaerobic or facultative anaerobes
- Grow on enriched media
- Arcanobacterium pyogenes formerly known as Actinomyces pyogenes and Corynebacterium pyogenes
- Colonise mucous membranes