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Caseous Lymphadenitis in Goats: Welfare and Control

Caseous lymphadenitis is a chronic bacterial infection causing abscesses in goats. This guide covers welfare impacts and control strategies.

Key Facts

CLA is caused by Corynebacterium pseudotuberculosis bacteria
Characteristic thick-walled abscesses form in lymph nodes under the skin
Internal abscesses in lung and visceral lymph nodes cause significant welfare impact
The condition spreads through pus from ruptured abscesses contaminating pasture
Vaccination is available in some countries and reduces severity
CLA is difficult to eradicate from infected flocks once established

Welfare Considerations and Management

Welfare management of CLA focuses on reducing spread and managing the discomfort associated with abscess formation. External abscesses are managed by veterinary lancing and draining with appropriate containment of infectious material. Animals with suspected internal abscesses showing weight loss and respiratory signs require careful welfare assessment. Screening new animals before introduction to the flock prevents introduction. Biosecurity and test-and-cull programmes reduce prevalence.

What You Can Do

Screen all incoming animals before introduction to existing flocks
Contain and dispose of abscess contents hygienically to prevent pasture contamination
Vaccinate where available to reduce severity and spread
Assess quality of life of animals with suspected internal abscesses