Horse Mud Fever: Prevention and Welfare Management

Mud fever (pastern dermatitis) causes painful skin lesions in horses kept on wet ground, with prevention and early treatment minimizing welfare impacts.

Key Facts

Mud fever is caused by Dermatophilus congolensis and other bacteria exploiting skin damaged by prolonged wet conditions
The condition causes painful scabs, exudate, and lameness when severe
White-limbed horses with pink skin are more susceptible than darker-pigmented animals
Prevention through mud management and barrier protection is more effective than treatment
Removal of scabs during treatment causes significant acute pain and should be managed appropriately
Wet-dry cycling is more damaging to skin integrity than consistent wetness
Therapeutic barrier creams and antibacterial treatments support recovery when infection is established

Welfare Considerations

Mud fever causes genuine, often underestimated suffering. The acute pain of scab removal during treatment causes horses to resist handling and results in an unpleasant experience for both horse and handler. Chronic cases with secondary cellulitis become severely lame and systemically unwell. Many horses develop the condition annually from inadequate pasture management during wet seasons. The welfare responsibility lies primarily with land management: providing hard standing areas, rotating grazing, managing drainage, and applying barrier protection before wet conditions develop. Prevention is dramatically more welfare-friendly than treatment of established infection.

What You Can Do

Provide hard standing areas for horses to stand away from deep mud
Apply barrier creams like Vaseline or zinc cream to lower limbs in wet conditions
Check horse lower limbs daily during wet periods for early signs of redness or scabbing
Seek veterinary guidance before removing scabs, which should be done with appropriate pain management
Rotate grazing to avoid poaching high-traffic areas
Consider veterinary treatment including antibiotics for severe or recurring cases