ETIO-DIAGNOSIS & THERAPEUTIC STUDIES ON CANINE DEMODICOSIS WITH SPECIAL REFERENCE TO LYMPHOCYTE BLASTOGENESIS & CYTOKINE EXPRESSION IN DEMODECTIC DOGS
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Date
2012
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AAU, Anand
Abstract
On screening of 396 dogs brought at the Teaching Veterinary Clinical Service Complex, Zaveri Clinic, College of Veterinary Science and Animal Husbandry, Anand between June 1, 2011 and May 31, 2012, the overall prevalence of canine demodicosis was observed to be 14.40 per cent. The cases of demodicosis were characterized as localized (19.05%) or generalized (80.95%), and juvenile onset (66.67%) or adult onset (33.33%). Season-wise highest prevalence was noticed during the summer (38.57%) which was closely followed by monsoon (36.84%), and winter (24.59%) season. The dogs belonging to 1 to 3 years of age group showed greater susceptibility to demodicosis (43.85%) followed by dogs aged over 3 years (28.08%), those below 6 months (15.79%), and the least in dogs aged between 6 to 12 months (12.28%). Purebred dogs showed greater (77.20%) susceptibility to demodicosis. Breed-wise prevalence indicated higher involvement of Labrador (21. 05%), followed by mongrel and Doberman (17.54% each), Pug (14.04%), GSD (12.28%), Great Dane (7.02%), Spitz (5.26%), and Rottweiler, Dalmatian and French Mastiff (1.74% each). Male dogs (64.91%) showed greater involvement to demodicosis as compared to female dogs (35.09%). Demodicosis in dogs was diagnosed by deep skin scraping examination (DSS), trichography/ hair plucking (HP) microscopy and exudates (E) microscopy. On microscopic examination, Demodex mites were seen in the deep skin scrapings from 14.40 per cent of dogs with dermatitis. On HP microscopy, four (50 %) out of eight cases of locaUzed demodicosis and 31 (91.17%) out of 34 cases of generalized demodicosis were found positive for Demodex mites. On E microscopy, all fifteen cases of pyodemodicosis showed Demodex mites. Deep skin scraping (DSS) examination was found to be the most reliable method of diagnosis. Exudate microscopy and trichography/ hair plucking (HP) microscopy showed 100 and 83.33 per cent sensitivity respectively.
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VETERINARY MEDICINE, A STUDY