PATHOGENIC BACTERIA AND DERMATOPHYTES CAUSING DERMATITIS IN DOGS

Dermatitis in dogs can be caused by several infectious pathogenic agents as bacterias, dermatophytes fungis and parasites. This present research was made in order to know which bacteria and dermatophites fungi are involved in this kind of disease. All samples (secretions, skin, hairs, and scalps) were collected by veterinarian in Clinic Veterinary and sent them to laboratory proccedures in the same day. The methodology used to isolate bacterias and dernatophites, was choosen using Blood Agar (and Brain Infusion Broth for enrichment) and Agar Sabouraud with mycosel respectively. The temperature and the time used to cultivation of bacteria was 37oC (24-48 hours) and to fungi 28oC (15 days) respectively.From 38 clinic samples examined were isolated the folowing agents: 29 strains (76,3%) of Staphylococcus intermedius; 3 strains (7,89%) of Microsporum canis; 2 strains (5,26%) of Staphylococcus sp; 2 strains (5,26%) of Streptococcus sp.; 1 strain (2,63%) of Microsporum gypseum;1 strain (2,63%) of Pseudomonas aeruginosa. These results confirm Staphylococcus intermedius as the main bacterial agent involved in dermatites in dogs in this region of Brazil.