Pulmonary lesions and clinical disease response to Mannheimia haemolytic a challenge 10 days following administration of tildipirosin or tulathromycin
Keywords:BRD, bovine respiratory disease, beef cattle, MH, mannheimia haemolytica, pathogen, tildipirosin, tulathromycin
Bovine respiratory disease (BRD) causes significant economic loss to the beef cattle industry. Mannheimia haemolytica (MH) is considered the predominant bacterial pathogen associated with BRD. The purpose of this randomized, blinded, controlled clinical trial was to evaluate the effect of metaphylactic administration of tildipirosin or tulathromycin 10 days prior to experimental inoculation with MH on the development of pulmonary lesions in beef heifers.