DERMATOFITOSIS EN COBAYOS DE BIOTERIO CONVENCIONAL DE LA GRANJA EXPERIMENTAL "LA TORCAZ"
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Las dermatofitosis son micosis superficiales producidas por hongos dermatofitos, que tienen la capacidad de invadir el tejido queratinizado (piel, pelos y uñas) del hombre y los animales. El objetivo fue evaluar las dermatofitosis en cobayos de bioterio convencional de la Granja Experimental "La Torcaz". Se realizó una investigación descriptiva y de campo durante un año, explorándose variables clínicas y micológicas. Se tomaron 208 muestras al azar de piel aparentemente sana y escamas epidérmicas o pelos. El tamaño de la muestra se estimó mediante el programa Epi-info versión 5.01. A las muestras obtenidas se les realizó examen directo con KOH al 10% + Tinta Parker y se sembraron en placas de Petri conteniendo medio de cultivo Mycosel y Lactrimel. Los agentes de dermatofitosis más frecuentemente aislados fueron: Trichophyton mentagrophytes (38,46%) y Microsporum canis (28,37%). Las infecciones fúngicas fueron mas comunes en los animales jóvenes (lactantes y en crecimiento) que en los adultos. El examen por cultivo resultó el método más efectivo para la detección de dermatofitos. Se debe establecer dentro de la rutina de trabajo un programa de muestreo periódico de la colonia de cobayos.
Dermatophytoses in Guinea Pigs from Conventional Animal Facilities of Experimental Farm "La Torcaz"
ABSTRACT
Dermatophytoses are superficial mycoses caused by dermatophytes fungi that invade the keratinized tissue (skin, hair, and nails) in man and animals. The aim of the present study was to evaluate dermatophytoses in guinea pigs from animal facilities of experimental farm "La Torcaz". A one year field survey was done exploring different clinical and mycological variables. Two hundreds and eight samples were taken randomly from apparently healthy skin and epidermal flakes or hair. Size sample was determined by Epi-info program version 5.01. Samples were tested by direct exam with KOH 10% plus Parker ink. They were also cultured in two Petri dishes with Mycosel and Lactrimel agar. The most common isolated dermatophytes were: Trichophyton mentagrophytes (38.46%) and Microsporum canis (28.37%). More frequent infections were in suckling and in growing animals, than in adults. Culture was the most effective method for dermatophytes detection. A periodical sampling program must be included in a routine control of guinea pig colony.
Dermatophytoses in Guinea Pigs from Conventional Animal Facilities of Experimental Farm "La Torcaz"
ABSTRACT
Dermatophytoses are superficial mycoses caused by dermatophytes fungi that invade the keratinized tissue (skin, hair, and nails) in man and animals. The aim of the present study was to evaluate dermatophytoses in guinea pigs from animal facilities of experimental farm "La Torcaz". A one year field survey was done exploring different clinical and mycological variables. Two hundreds and eight samples were taken randomly from apparently healthy skin and epidermal flakes or hair. Size sample was determined by Epi-info program version 5.01. Samples were tested by direct exam with KOH 10% plus Parker ink. They were also cultured in two Petri dishes with Mycosel and Lactrimel agar. The most common isolated dermatophytes were: Trichophyton mentagrophytes (38.46%) and Microsporum canis (28.37%). More frequent infections were in suckling and in growing animals, than in adults. Culture was the most effective method for dermatophytes detection. A periodical sampling program must be included in a routine control of guinea pig colony.
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