Lumpy jaw is a chronic infectious condition which affects cattle. It is caused by the anaerobic filamentous bacteria [[Actinomyces bovis|''Actinomyces bovis'']]
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'''Lumpy jaw''' is a chronic infectious condition which affects cattle. It is caused by the anaerobic filamentous bacteria [[Actinomyces bovis|''Actinomyces bovis'']]
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Actinomyces is a normal commensal of the oral cavity and upper respiratory tract of cattle, it gains entery to underlying soft tissue when the mucosa is damaged by trauma or eruption of teeth.
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Actinomyces is a normal commensal of the oral cavity and upper respiratory tract of cattle, it gains entry to underlying soft tissue when the mucosa is damaged by trauma or eruption of teeth.
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Lesions are charcterised by gross swelling, abscesses and draining fistulae overlying granulation of the madible and maxila.