| an evaluation of the relative efficacy of tulathromycin for the treatment of undifferentiated fever in feedlot calves in nebraska. | a field trial was performed under commercial feedlot conditions in central nebraska to assess the relative efficacy of tulathromycin (tula) to florfenicol (flor) for the treatment of undifferentiated fever (uf) in feedlot calves that did not receive a metaphylactic antimicrobial or vaccines/bacterins containing mannheimia haemolytica or histophilus somni at feedlot arrival by comparing animal health, feedlot performance, and carcass characteristic variables. two hundred recently weaned, auction ... | 2007 | 17616056 |