What is caseous lymphadenitis (CL) in goats?

Caseous lymphadenitis (CL) is accurately described as a chronic bacterial infection that primarily affects goats and other small ruminants. This condition is caused by the bacterium Corynebacterium pseudotuberculosis, which leads to the formation of abscesses in the lymph nodes and other tissues. The infection often manifests as swollen lymph nodes, particularly in the neck, jaw, and along the body, where the abscesses can become visible and may eventually rupture.

The nature of this infection is noteworthy for its chronicity; once a goat contracts CL, the infection can persist for a long time, leading to repeated episodes of abscess formation. Control and management of CL in a herd are critical, as it can spread through environmental contamination and direct contact with infected animals. Proper husbandry practices, including regular health checks and biosecurity measures, can help manage the risk of spread within goat populations.

Understanding CL as a bacterial infection emphasizes the importance of prompt identification and treatment, as well as the need for vaccination and culling strategies to prevent outbreaks in goat herds.