Spontaneous Pasteurella pneumonia in adult laboratory goats complicated by superinfection with Corynebacterium pseudotuberculosis and Muellerius capillaris.

Three cases of Pasteurella pneumonia in laboratory goats were diagnosed during a 21 month period. Two goats died acutely and a third was euthanized after four weeks of unsuccessful therapy. Pasteurella multocida was isolated from the lung lesions of all three goats. Corynebacterium pseudotuberculosis and Muellerius capillaris also were present in the lungs of the third goat. Pasteurella infections were associated with fibrino-hemorrhagic-necrotizing pleuritis and pneumonia, while lungs superinfected with Corynebacterium also contained microabcesses. The gross and histologic lesions are described and diagnosis, treatment and prevention are discussed.