Published in Scientific Works. Series C. Veterinary Medicine, Vol. LXVIII, Issue 1
Written by George MOGOŞ, Anca BULGARU, Elena NEGRU, Horia DINU, Mihai DANEŞ, Doina DANEŞ
The present study was carried out with the purpose of identifying the etiological agent(s) of a reemmergent outbreak of respiratory syndrome affecting a flock of sheep. The first cases of pneumonia on the farm were recorded during warm season (June - July 2021), affecting mainly lambs, with a few isolated cases among adult sheep. Symptoms included nasal discharge, coughing, dispnea, loss of appetite and severe weight loss, a morbidity of 80% among young animals and 5% mortality. Pasteurella spp. was isolated from lung tissue samples collected during necropsy. The lambs were treated with Enrofloxacin administered orally, and the clinical status improved after 6 days of therapy; however, during the fall of 2021, a recurrence of respiratory distress was reported, this time affecting both young and adult animals. Bacteriological examinations were performed on nasal and palatine tonsil swabs collected from live animals and lung and lymph node tissue collected from slaughtered animals for diagnostic purposes. Two strains of Pasteurella were isolated, Pasteurella multocida and Pasteurella spp. The isolates were characterized biochemically and antibiotic susceptibility tests were performed. Following test results, the entire flock of 2000 sheep was treated with Enrofloxacin for 6 days and complete remission of respiratory symptoms was achieved.
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