Pneumonia in goats caused by Mycoplasma mycoides subspecies mycoides.

Mycoplasma mycoides subspecies mycoides (large-colony type) was isolated from the lungs of a goat with pneumonia. Clinical signs included inappetence, weakness, listlessness, coughing, dyspnea, pyrexia, slight nasal discharge, and lameness. Tylosin (4 mg/kg of body weight) was administered each day for 4 days, resulting in slow recovery. Three weeks later, the clinical signs recurred and the kid was anemic. It was given a single blood transfusion and tylosin was administered daily. The kid's health status was steadily declined and it died after 6 days' treatment. At necropsy, the lungs were edematous and congested. Histopathologic findings were those of septicemia and pneumonia.