Bovine respiratory disease guidelines

PNEUMONIA IN ADULT CATTLE

DIAGNOSTICS

Most common pathogens are Mannheimia haemolytica, Pasteurella multocida, Histophilus somni and Mycoplasma spp, often in conjunction with viral pathogens.

Although diagnostics are rarely pursued, they should be considered for valuable animals or in outbreaks.

Culture and susceptibility testing can be performed from transtracheal wash, bronchoalveolar lavage or post-mortem specimens. Mannheimia can be associated with pleuropneumonia, which carries a very poor prognosis.

TREATMENT

Oxytetracycline most appropriate. Ceftiofur has limited activity against Mycoplasma spp.

DURATION OF THERAPY

Dependent on severity. 2-3 days may be adequate in mild cases. Treat until disease resolved, which may take > 1 week in severe cases.