Pulmonary response to intratracheal challenge with Pasteurella haemolytica and Pasteurella multocida.

Abstract

Calves were inoculated intratracheally with 5 X 10(7), 5 X 10(8), or 5 X 10(9) colony forming units of either 18-hour stationary phase cultures or 4-hour log phase cultures of Pasteurella haemolytica. The log phase culture at all concentrations produced more severe clinical signs, hematological changes and pulmonary lesions at postmortem examination than… (More)

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