Pneumonia in goats following administration of live and heat-killed Pasteurella haemolytica.
Lauermann, LH Jr.
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Six of 7 and 3 of 4 goats inoculated with live and heat-killed P. haemolytica (biotype-T), respectively, had pneumonia at necropsy. Clinically, the pneumonia was only detected in 8 of 9 goats with diseased lungs. One goat died of a fibrinous pneumonia which was associated with a profuse growth of both P. haemolytica (biotype-T) and P. multocida and a limited growth of Escherichia coli from the lungs. In the remaining 8 goats with lung lesions, the pneumonia was of the proliferative type, with only some showing the exudative feature. Five of these goats (including 3 controls) had bacteriologically sterile lung lesions, while the other 3 yielded P. haemolytica (biotype-T) and in one of them, chlamydia were also isolated. P. haemolytica (biotype-T) and P. multocida were isolated from 1 of 2 goats with normal lungs.