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Facial Eczema in Cattle: Welfare and Prevention

Facial eczema is a photosensitisation disease caused by fungal toxins. This guide covers welfare impacts and prevention in affected regions.

Key Facts

Facial eczema is caused by sporidesmin toxin from Pithomyces chartarum fungus in pasture
The toxin causes liver damage leading to photosensitisation
Exposed areas (face, ears, udder) develop severe inflammation and skin death
Predominantly affects livestock in New Zealand and Australia
Welfare impacts include intense pain, skin sloughing, and secondary infection
Prevention through pasture management and zinc supplementation is essential

Welfare Considerations and Management

Facial eczema causes significant suffering through liver damage and subsequent photosensitisation. Affected animals must be removed from sunlight immediately. Supportive treatment includes anti-inflammatories, protection from sunlight, and management of secondary skin infections. Prevention through spore count monitoring of pastures, fungicide application, and zinc supplementation (protective of liver against sporidesmin) is the most effective welfare approach.

What You Can Do

Monitor pasture spore counts during risk periods in endemic areas
Implement zinc supplementation as preventive protection during high-risk periods
Shade affected animals from sunlight immediately if clinical signs develop
Work with your vet on preventive programmes appropriate for your region