Microfloras of otitis externa and normal external ear canals in dogs
1999
Kim, K.H. | Choi, W.P. (Kyungpook National University, Taegu (Korea Republic). College of Veterinary Medicine)
This study was conducted to examine the outbreak rate and the causative agents of otitis externa in 26 dogs(49 ears; 23 dogs = bilateral, 3 dogs = unilateral), and the normal microfloras of external ear canal in 68 dogs(133 ears; 65 dogs = bilateral, 3 dogs = unilateral) in Taegu, 1997. The breed, living environment, sex, age and season distribution of otitic dogs were as follows: Dogs with erect and hairy ears(42.3%), pendulous and hairy ears(38.5%), indoor(92.3%), female(65.4%) and below one year old(38.5%) were more prevalent. According to season, otitis externa was mainly occurred between July and October. The major causative agents of canine otitis externa were Malassezia pachydermatis(32.7%), Staphylococcus aureus(26.5%) and S intermedius(16.3%). The major causative agents of canine otitis externa were Malasszia pachydermatis(32.7%), Staphylococcus aureus(26.5%) and S intermedius(16.3%). In the microorganism isolated 39 otitic ear canals, single infection was 53.8% and mixed infection was 46.2%. The normal microfloras of canine external ear canal were fungi including M pachydermaits, Aspergillus spp, Microsporum canis, Alternaria spp, Verticillium spp and Yeast, and bacteria including Staphylococcus spp(10 species including S xylosus), Bacillus spp, Corynebacterium spp, Listeria spp, Actinomyces pyogenes and Escherichia coli. No growth was 34.6%.
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