Difference between revisions of "Pneumonic Pasteurellosis"
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Latest revision as of 15:41, 9 May 2011
- Synonym: Shipping fever
- Caused by Manheimia haemolytica biotype A serotype 1 (90%) and Pasteurella multocida
- In young, growing cattle
- In clinically normal cattle Mann. haemolytica serotype 2 is present in low numbers, only in nasal cavity and tonsils
- Clinical signs: depression, anorexia, rapid shallow respiration, crusty nose with mucopurulent discharge, serous ocular discharge
- Acute bronchopneumonia and may progress to lobar pneumonia with toxaemia
- Pathology
- Lobar, cranioventral exudative pneumonia with fibrin, fibrinous pleuritis, areas of coagulative necrosis
- Histology
- Large numbers of bacteria are usually associated with necrotic lesions