Panhandle Veterinary Diagnostic Laboratory

March 1995 through February 1997

Below are in vitro sensitivities to Mannheimia (Pasteurella) haemolytica and Pasteurella multocida reported by the Panhandle Veterinary Diagnostic Laboratory, Scottsbluff, NE. Samples were obtained from March 1, 1995 to February 28, 1997 from submissions to the laboratory for diagnostic purposes. There were fewer organisms tested against florfenicol than others because florfenicol disks were not available at the beginning of the trial period. Of the bacteria tested, the greatest sensitivity was to florfenicol.

In vitro Sensitivity

  M. haemolytica P. multocida
Antibiotic No.
Tested
%
Sensitive
No.
Tested
%
Sensitive
Ampicillin 123 88.6 57 89.5
Ceftiofur 123 88.6 57 86
Florfenicol 63 100 30 100
Penicillin 117 58.1 55 54.5
Spectinomycin 123 76.4 57 75.4
Tetracycline 123 81.3 57 82.5
Tilmicosin 123 81.3 57 91.2
Tylosin 123 00.0 57 5.3