Bovine Ringworm: Welfare and Management in Cattle

Key Facts

• Bovine ringworm is caused by Trichophyton verrucosum, highly resistant in the environment and zoonotic
• Most common in housed young cattle (6-18 months) due to close contact and immature immune responses
• Characteristic circular grey-white crusty lesions appear on the head, neck, and body
• Most cases resolve spontaneously within 3-4 months as immunity develops, especially with sunlight exposure
• Zoonotic risk is significant — stockpersons and children develop similar lesions from handling infected cattle

Welfare Considerations

Bovine ringworm causes moderate welfare suffering through skin irritation, pruritus, and the inflammation associated with active lesions. Severe widespread ringworm creates significant discomfort and, in calves, can affect feeding behavior. The zoonotic risk is a significant occupational health concern for stockpersons and families. Treatment accelerates resolution and reduces environmental contamination. Topical enilconazole spray applied twice weekly is effective. Housing ventilation and sunlight exposure in good weather accelerates natural resolution. Strict hygiene and protective clothing when handling affected animals protects human health.

What You Can Do

• Treat affected cattle with enilconazole spray or natamycin as directed to accelerate resolution
• Wear gloves and protective clothing when handling ringworm-affected cattle
• Wash hands thoroughly after any contact with infected animals and equipment
• Improve ventilation in calf housing and allow sunlight access — it accelerates natural resolution
• Disinfect shared equipment and grooming tools as the fungus persists in the environment for years