15/02/2026
π¨ TRISMUS IN BOVINE (LOCKJAW IN CATTLE) π¨
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.
π MAIN CAUSES
β’ Tetanus (Clostridium tetani) β enters through deep wounds
β’ Castration & dehorning wounds
β’ Hoof injuries
β’ Injection sites
β’ Navel infections in calves
β’ Jaw abscesses or severe mouth infections
β’ Foreign objects in the mouth
β’ Jaw or nerve injuries (rare)
π CLINICAL SIGNS β οΈ Act early!
β’ Locked jaw / difficulty opening mouth
β’ Reduced feeding or total loss of appetite
β’ Excessive salivation
β’ Stiff neck and facial muscles
β’ Erect ears, anxious look
β’ General body stiffness
β’ Difficulty walking or lying down
β’ Death if untreated
π§ͺ DIAGNOSIS
β’ Based on clinical signs
β’ History of recent wounds or procedures
β’ Lab tests are rarely required
π TREATMENT (EMERGENCY) β Do not delay!
βοΈ Tetanus antitoxin (early use is critical)
βοΈ Antibiotics (commonly penicillin)
βοΈ Thorough wound cleaning
βοΈ Muscle relaxants & sedatives
βοΈ Supportive care (soft feeds, fluids, quiet environment)
π PROGNOSIS
β’ Guarded to poor in advanced cases
β’ Early treatment improves survival
β’ Late cases often end fatally
π‘οΈ PREVENTION β BEST SOLUTION
β
Tetanus vaccination
β
Clean castration & dehorning
β
Prompt wound treatment
β
Sterile injection techniques
β
Navel disinfection in newborn calves
π KEY TAKEAWAY Trismus is not just a jaw problemβit is often tetanus in disguise.
π¨ Prevention, hygiene, and quick action save lives!