Ringworm in Young Cattle: Deep Welfare and Control Guide

Ringworm disproportionately affects young housed cattle in winter — welfare-focused control reduces the pruritus and spread of this contagious fungal infection.

Key Facts

• Trichophyton verrucosum causes classical ring-shaped, crusty hair loss lesions on the face and neck
• Calves and yearlings are most susceptible as adults develop immunity following infection
• Shared equipment, brushes, and housing spread infection between animals
• Pruritic lesions cause rubbing behavior that damages skin further and spreads spores
• Antifungal sprays (natamycin) reduce severity and duration when applied early

Welfare Considerations

Ringworm in young housed cattle causes welfare suffering primarily through pruritus (intense itching) that drives repeated rubbing behavior. Affected calves rub against posts, rails, and equipment, enlarging lesions, spreading fungal spores throughout the environment, and causing physical discomfort and skin irritation. The zoonotic risk to farm staff adds a welfare dimension for human health. Welfare-optimized ringworm control requires: early identification of affected individuals, prompt topical antifungal treatment, isolation or separation of severely affected animals, disinfection of shared equipment, and reduction of stocking density that promotes contact transmission. The self-limiting nature of ringworm in immunocompetent animals means most recover within 2-4 months, but treatment reduces the duration of welfare-relevant pruritus and limits farm spread.

What You Can Do

• Implement early treatment with natamycin antifungal spray for all affected animals
• Isolate severely affected calves to limit spread to susceptible pen mates
• Disinfect all shared grooming equipment, gates, and race sides that may carry spores
• Farm staff should wear gloves when handling affected animals — ringworm is a zoonosis
• Improve ventilation and reduce stocking density in housing to reduce ringworm outbreaks next winter