Antibiogram and Therapeutic Management of Bacterial Otitis Externa-A Clinical Study of 81 Dogs

The present investigation was carried out in 81 clinical cases of otitis externa in dogs presented with symptoms of erythema of pinna, head shaking, ear scratching, mild pain and mild yellowish discharge. The diagnosis was based on clinical signs and confirmed by cultural and biochemical tests. Bacteria isolated from ear swab samples were Staphylococcus sp. (48.6%), Pseudomonas sp. (21.5%), Proteus sp. (14.95%), E.coli (8.41%) and Klebseilla sp. (6.54%). Antibiogram pattern of Staphylococcus sp. revealed highest sensitivity to Amoxicillin-Clavulanic acid (94.23%) and least sensitivity to Penicillin G (11.53%), Pseudomonas sp. revealed highest sensitivity to Amoxicillin-Clavulanic acid (86.95%) and Proteus sp. and Klebseilla sp. were showed 100% sensitivity to Cefotaxime whereas complete resistance to Penicillin G and Amikacin were observed for Gram negative bacterial isolates. E. coli revealed highest sensitivity to Cefotaxime (88.88%) and least sensitivity to Penicillin G. All dogs were clinical managed successfully.