Digital Dermatitis Welfare: Deep Understanding of Cattle Hoof Pain
Digital dermatitis (Mortellaro disease) is the most common cause of lameness in dairy cattle worldwide, causing severe hoof pain that profoundly affects welfare, productivity, and behavior.
Key Facts
- Caused by Treponema bacteria entering through damaged skin between the claws
- The most common cause of lameness in dairy cattle in the UK and globally
- Active lesions are extremely painful — affected cows show marked behavioral pain indicators
- The M-score system classifies lesions from M0 (healthy) to M4 (advanced disease)
- Treatment with topical oxytetracycline is effective in early stages; advanced lesions are more resistant
Welfare Considerations
Digital dermatitis welfare impact is severe in active lesions. Affected cows show marked behavioral changes — reduced lying time to avoid foot contact, reluctance to walk, and physiological stress indicators including elevated cortisol. The pain disrupts normal behavior including feed intake, social interaction, and reproductive behavior. Early detection using M-score systems and prompt treatment with topical antibiotics provides welfare relief within days for early lesions. Advanced M4 lesions are more welfare-challenging, requiring more intensive treatment. Prevention through footbathing, hygiene, and cow comfort management reduces the welfare burden at population level.
What You Can Do
- Implement the M-score system for systematic digital dermatitis monitoring
- Train all stockpersons to recognize and score digital dermatitis lesions
- Treat early lesions within 3 days of detection for best welfare outcomes
- Maintain effective footbathing protocols throughout the year
- Invest in cow comfort to reduce time standing in contaminated environments