Pleuropneumonia is important because pigs can die at any age even up to market weights, and it is widely distributed in swine herds. The disease has been reported throughout the world. The economic importance is due to pigs deaths, treatment costs, vaccine costs, recurring problems with pig deaths, and trim loss at slaughter. The organism is specific for pigs. Pigs become infected from other carrier pigs who shed organisms.

Pigs with pleuropneumonia become very ill with fever, lying around, off-feed, and often death. Sometimes, the skin on the nose, ears, legs, and eventually the body become purplish-red. Pigs that die often have a foamy, blood-tinged discharge from the mouth and nose. Death is quick within 24-36 hours after first becoming sick.

Diagnosis is based upon the clinical signs and pattern of disease in herds. The lesions in lungs are distinct for this disease. The disease is confirmed by culturing the organism in the laboratory. Identification of the serotype(s) in your herd is important in planning an appropriate vaccination program. Serologic testing is available to diagnose herds infected with pleuropneumonia.

Treatment of affected pigs often requires pigs to be injected because they are not eating and deaths occur quickly. Antibiotics must be effective against pleuropneumonia and withdrawal times must be observed since the older pigs are affected.

Take-Home Message