Nasal isolation of Mannheimia haemolytica and Pasteurella multocida as predictors of respiratory disease in shipped calves

•M. haemolytica in the upper respiratory tract was associated with subsequent BRD•Need for treatment was associated with lower average daily gain•Sampling of the upper respiratory tract may be able to assist in diagnosis of BRD Three hundred ninety five calves were purchased from sale barns and deli...

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