Equine Welfare

Horse Mud Fever: Prevention and Welfare

Mud fever is a painful skin condition affecting horses kept in wet conditions. Understanding causes and prevention improves equine welfare significantly.

Key Facts

Mud fever is caused by the bacterium Dermatophilus congolensis, activated by persistent moisture
White-legged horses are more susceptible due to reduced pigmentation in the skin
Affected limbs show crusty scabs, hair loss, heat, and swelling in pastern regions
Severe cases can cause significant lameness and require veterinary antibiotic treatment
Prevention focuses on good pasture management and keeping legs dry between mud exposure

Welfare Considerations

Mud fever causes genuine pain and distress in horses. The condition can progress rapidly from mild irritation to severe lameness if untreated. Horses in affected herds may show reduced movement, reluctance to bear weight, and behavioral signs of discomfort. Early detection and treatment are key welfare priorities, along with environmental management to reduce mud exposure during wet seasons.

What You Can Do

Rotate pastures and use sacrifice paddocks during wet weather to reduce mud
Check horses' lower limbs daily during wet periods for early scab formation
Avoid washing legs repeatedly — dry thoroughly if washing is necessary
Apply barrier products to susceptible horses before turnout in muddy conditions
Consult a vet promptly if swelling, heat, or lameness accompanies skin crusting