15/02/2026
🚨 TRISMUS IN BOVINE (LOCKJAW IN CATTLE) 🚨
A deadly condition every cattle farmer must know
Trismus is a condition where cattle are unable to open their mouth properly due to stiff jaw muscles. In most cases, it is an early warning sign of tetanus, a fatal but preventable disease.
🔍 MAIN CAUSES
• Tetanus (Clostridium tetani) – enters through deep wounds
• Castration & dehorning wounds
• Hoof injuries
• Injection sites
• Navel infections in calves
• Jaw abscesses or severe mouth infections
• Foreign objects in the mouth
• Jaw or nerve injuries (rare)
🐄 CLINICAL SIGNS ⚠️ Act early!
• Locked jaw / difficulty opening mouth
• Reduced feeding or total loss of appetite
• Excessive salivation
• Stiff neck and facial muscles
• Erect ears, anxious look
• General body stiffness
• Difficulty walking or lying down
• Death if untreated
🧪 DIAGNOSIS
• Based on clinical signs
• History of recent wounds or procedures
• Lab tests are rarely required
💉 TREATMENT (EMERGENCY) ⛔ Do not delay!
✔️ Tetanus antitoxin (early use is critical)
✔️ Antibiotics (commonly penicillin)
✔️ Thorough wound cleaning
✔️ Muscle relaxants & sedatives
✔️ Supportive care (soft feeds, fluids, quiet environment)
📉 PROGNOSIS
• Guarded to poor in advanced cases
• Early treatment improves survival
• Late cases often end fatally
🛡️ PREVENTION – BEST SOLUTION
✅ Tetanus vaccination
✅ Clean castration & dehorning
✅ Prompt wound treatment
✅ Sterile injection techniques
✅ Navel disinfection in newborn calves
📌 KEY TAKEAWAY Trismus is not just a jaw problem—it is often tetanus in disguise.
🚨 Prevention, hygiene, and quick action save lives!
