BACTERIAL ISOLATES FROM BOVINE RESPIRATORY TRACT INFECTION AND THEIR ANTIBIOGRAM

Abstract

The bacterial organisms present in upper respiratory tract of bovines with respiratory disease were isolated and identified to the species level from the nasal swabs and deep nasal washings collected. Out of the total 39 bacterial isolates, 19 (48.72%) were Gram positive and 20 (51.28%) were Gram negative. Different bacterial isolates obtained were Staphylococcus aureus (6), Staphylococcus epidermidis (5), treptococcus pyogener (8), Escherichia colt (7), Klebsiella pneumoniae (5), Pseudomonas aeruginosa (4}, Mannheimea haemolytica (3) and Proteus vulgaris { 1 }. Overall antibiotic sensitivity pattern of the 39 isolates showed maximum sensitivity to enofloxacin (94.87%), followed by ciprofloxacin (87. i 8%), chloramphenicol (76.92%), gentamicin (64.10%), oxytetracycline (53.85%), amoxycillin (51.28%}, streptomycin (35.9%) and trimethoprim (28.21 %). Gram positive isolates were cent per cent sensitive to enrofloxacin and ciprofloxacin, followed by gentamicin (84.21%) and chloramphenicol 73.68). The Gram negative isolates showed highest sensitivity to enrofloxacin (90%), followed by chloramphenicol (80%), ciprofloxacin {75%) and oxytetracycline (60%}. Multiple bacterial organisms present in the bovine respiratory infection questions the use of many available preventive veterinary products.