Lumpy Jaw / Actinomycosis in Cattle Explained

Why does a cow develop a hard, immovable swelling along the jaw? In this video, we break down lumpy jaw, also known as bovine actinomycosis, a chronic bacterial infection caused primarily by Actinomyces bovis. Unlike a simple superficial abscess, lumpy jaw produces pyogranulomatous inflammation, osteomyelitis and progressive destruction of the jawbone. We cover how coarse hay, plant awns, sticks and other sharp material can damage the oral lining and allow bacteria to invade deeper tissues. You will also learn about the characteristic clinical signs, including hard jaw swelling, draining tracts, sulfur granules, loose teeth, drooling, painful chewing, weight loss and difficulty eating. The video also explains how veterinarians use radiographs, cytology with Gram staining, anaerobic culture and histopathology to support the diagnosis. Treatment options discussed include intravenous sodium iodide, oxytetracycline, penicillin, florfenicol, debridement and supportive management. Because food-animal drug use and withdrawal intervals vary, all treatment decisions should be made under veterinary supervision. Local Forecast by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/...