Livestock

Johne's Disease in Cattle: Welfare and Control

How Johne's disease (paratuberculosis) affects cattle welfare and herd management.

Key Facts

Johne's disease is caused by Mycobacterium avium paratuberculosis
Causes chronic progressive diarrhoea, weight loss, and bottle jaw
Animals typically show clinical signs at 2-5 years old
No cure exists — welfare is managed through culling and prevention

Welfare Considerations

Cattle in advanced Johne's disease experience significant welfare compromise — weight loss, diarrhoea, and eventual debilitation. Welfare-focused management involves early identification through ELISA testing, timely culling of clinical cases, and biosecurity to prevent spread to replacements. Vaccination reduces new infections in some countries.

What You Can Do

Implement a herd health plan addressing Johne's disease risk
Test purchased cattle before introduction to the herd
Work with your vet to develop a biosecurity protocol for preventing new infections