Farm Animal Welfare

Sheep Johne's Disease and Welfare

Johne's disease (paratuberculosis) in sheep causes chronic wasting and welfare deterioration, often going undetected for years.

Key Facts

Johne's disease is caused by Mycobacterium avium subspecies paratuberculosis
Infected sheep show progressive weight loss, diarrhoea, and weakness over months
Most infections are subclinical, creating a reservoir within flocks
Control relies on test-and-cull programs combined with improved hygiene
No approved treatment exists; prevention through flock testing is essential

Welfare Considerations

Johne's disease causes prolonged suffering as affected sheep deteriorate over months. A proactive testing and biosecurity approach prevents new infections and identifies animals requiring timely euthanasia.

What You Can Do

Support sheep farmers participating in accredited Johne's control programs
Advocate for subsidized testing programs to improve flock health
Choose lamb and wool from farms with verified Johne's control measures