University of Nebraska Diagnostic Laboratory

January 1996 through March 1998

Below are presented in vitro sensitivity data on bovine isolates obtained from cases of BRD at the University of Nebraska Veterinary Diagnostic Laboratory, Lincoln, from January 1996 through March 10, 1998.

Florfenicol continues to demonstrate outstanding activity against the three major bacteria associated with BRD. There is evidence of increasing resistance to other antibiotics commonly employed in the treatment of this disease.

Number Tested / Percent Sensitive

Mannheimia (Pasteurella) haemolytica

Pasteurella multocida

Haemophilus somnus