Chronic dermatitis caused by Dermatophilosis in dairy and drought animals were studied in delta districts of Tamilnadu. Dermatophilosis is a contagious zoonotic skin disease caused by Dermatophilus congolensis with wide host range and most commonly affects cattle, sheep and horse. The disease is characterized by exudative dermatitis with scab formation. Factors such as prolonged wetting by rain, high humidity, high temperature, mechanical injury to the skin, concurrent disease, stress and tick

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... nfestation that reduce or permeate the natural barrier of the integument influence the development, prevalence, seasonal incidence and transmission of Dermatophilosis. A cross sectional study on prevalence of Deramtophilosis was carried out and epidemiologic risk factors like age, breed, sex and seasonal coditions were corelated with the prevalence of Dermatophilosis. This study concludes that winter season, higher age group, female and jersey cross bred will be the risk factors for Dermatophilosis prevalence and oxytetracycline is the chioce of antibiotic for clinical management.