From 60 horses showing skin lesions, 42% were positive for fungal infection. Horses less than 2-year old were more susceptible to this infection. Fourteen species belonging to nine genera of keratinophilic and cycloheximide-resistant fungi were recovered from collected specimens. Trichophyton was the dominant genus of which T. equinum was the most common. This species proved to be the main causative agent of ringworm in horses. In addition to dermatophytes, many species of the isolated fungi were keratinophilic. The presence of such fungi on hairs and skin of horses may create an opportunity for them under special circumstances to become invasive to the skin or hair and thus cause primary or secondary infection of the animals.

Botany Department Assiut University Egypt

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Equine Dermatophytosis due to Trichophyton bullosum, a Poorly Known Zoophilic Dermatophyte Masquerading as T. verrucosum