SPECTINOMYCIN (SPECTAM(R)GA) IN THERAPY O F BOVINE RESPIRATORY-DISEASES DUE TO PASTEURELLA-HAEMOLYTICA OR PASTEURELLA-MULTOCIDA ASSOCIATED OR NOT TO MYCOPLASMA-BOVIS

A multicentred, randomised and double blind clinical trial comparing t he efficacy of spectinomycin (SPECTAM(R)GA) administered intramuscular ly at 20 mg/kg for 3 days every 12 or every 24 hours was conducted on 142 bovines (321 +/- 95 kg, 10,0 +/- 3.3 months) suffering from respir atory disease due to Pasteurella spp. or Mycoplasma bovis. Whatever th e etiology, no difference was found between the groups neither on rect al temperature, standardized clinical score, cure rate on Day 3 (86 % and 92 % respectively) and on Day 10 (86 % and 87 %) nor on relapse ra te (8.2 % and 7.7 %). The product was as effective on Pasteurella spp. as on Mycoplasma bovis. It was concluded that administration once a d ay is preferable.