Livestock

Johnes Disease in Goats: Welfare and Herd Management

Welfare-focused guide to paratuberculosis in goats -- a chronic wasting disease with significant welfare implications.

Key Facts

Johnes disease (paratuberculosis) in goats is caused by Mycobacterium avium subsp. paratuberculosis (MAP)
Infection occurs in early life but clinical signs emerge in adult animals -- typically from 2-3 years of age
Affected goats develop chronic diarrhoea, weight loss, and progressive emaciation
The disease is invariably fatal -- there is no effective treatment
Welfare deteriorates progressively over months -- affected goats experience chronic hunger and weakness
Diagnosis during the subclinical phase is possible with ELISA testing -- allowing earlier welfare decisions
Biosecurity including hygiene of kidding areas and colostrum management is the primary prevention strategy
Herd-level control programmes can significantly reduce disease prevalence over time

Welfare Significance

Johnes disease causes prolonged suffering in goats. The progressive wasting, weakness, and chronic diarrhoea impair quality of life over months. Early identification through testing and prompt euthanasia of clinically affected animals reduces the duration of suffering. Prevention through biosecurity is far more welfare-protective than disease management.

What You Can Do

Implement regular MAP testing in your herd to identify subclinical infection
Euthanase clinically affected goats promptly rather than allowing prolonged suffering
Implement colostrum management protocols to reduce transmission to kids
Develop a biosecurity plan with your vet focused on Johnes prevention