Resumo
O trabalho teve como propósito avaliar a susceptibilidade e a resistência bacteriana de Staphylococcus spp. isolados de otite externa e piodermite superficial de cães. Foram avaliadas 109 amostras de cães que apresentavam sinais de infecções de pele ou orelha por meio de cultura e antibiograma. Houve o crescimento de Staphylococcus em 87 amostras (79,82%). Os resultados de antibiograma apresentaram como valores de resistência aos antimicrobianos Doxiciclina (68,97%), Sulfametoxazol com trimetropim (65,52%), Enrofloxacina (54,02%), Norfloxacino (51,72%), Azitromicina (42,53%), Gentamicina (34,48%), Cefovecina (32,18%), Cefalexina (24,14 %) e Amoxicilina com clavulanato e Polimixina B (16,09%) nas amostras. Amoxicilina com clavulanato apresentou as menores taxas de resistência e a doxiciclina apresentou as maiores taxas de resistência encontradas. Observou-se um aumento encontrado nas resistências bacterianas dos Staphylococcus spp. Foi também realizada diferenciação entre Staphylococcus spp. coagulase positivo e coagulase negativo, devido ao seu potencial patogênico, no qual houve diferença significativa entre os antimicrobianos nas amostras coagulase positivo (p<0,05) e não houve diferença significativa encontrada nas amostras coagulase negativo (p>0,05). Foram isoladas 54 amostras (62,07%) consideradas multirresistentes, entre elas 8 amostras de Staphylococcus spp. coagulase negativo.
The work aimed to evaluate the susceptibility and bacterial resistance of Staphylococcus spp., found in otitis externa and superficial pyoderma in dogs. 109 samples of dogs with symptoms of skin or ear infections were evaluated using culture and antibiogram. There was bacterial growth of Staphylococcus in 87 samples (79.82%). Whose antibiogram results showed resistance values to antimicrobials Doxycycline (68.97%), Sulfamethoxazole with trimethoprim (65.52%), Enrofloxacin (54.02%), Norfloxacin (51.72%), Azithromycin (42.53) %), Gentamicin (34.48%), Cefovecin (32.18%), Cephalexin (24.14%) and Amoxicillin with Clavulanate and Polymyxin B (16.09%) in the samples. Amoxicillin with clavulanate had the lowest resistance rates and doxycycline had the highest resistance rates found. There was a gradual increase in the bacterial resistance of Staphylococcus spp. Differentiation between Staphylococcus spp. positive coagulase and negative coagulase, due to their pathogenic potential, in which there was a significant difference between antimicrobials in the coagulase positive samples (p <0.05) and there was no significant difference found in the coagulase negative samples (p> 0.05). 54 samples (62.07%) were considered to be multidrug-resistant, including 8 samples of Staphylococcus spp. coagulase negative.