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Prevalence of Malassezia spp. in healthy pigs

M Garau1, Amaila del Palacio, J García

  • 1Department of Clinical Microbiology, Hospital Universitario 12 de Octubre, Madrid, Spain.

Mycoses
|February 1, 2005
PubMed

Insights

Malassezia yeasts, specifically lipid-dependent species like Malassezia sympodialis and Malassezia slooffiae, commonly colonize the external ear canals of healthy pigs. Other superficial areas were found to be negative for Malassezia.

Area of Science:

  • Veterinary Mycology
  • Animal Dermatology
  • Microbiology

Background:

  • Malassezia yeasts are part of the normal skin microbiota in many animals.
  • Previous studies on Malassezia occurrence in pigs predate the 1996 taxonomic revision.
  • Understanding yeast colonization is crucial for animal health and disease management.

Purpose of the Study:

  • To investigate the prevalence of Malassezia species in healthy pigs.
  • To identify specific Malassezia species colonizing pig skin.
  • To update knowledge on Malassezia occurrence following taxonomic revisions.

Main Methods:

  • Sampling of superficial skin areas (ear, anus, forehead, back) from 100 healthy pigs.
  • Culturing and identification of Malassezia yeasts from collected samples.
  • Analysis of species distribution and prevalence.

Main Results:

  • Malassezia yeasts were detected in 73% of pigs, exclusively in external ear canals.
  • No Malassezia species were found on the anus, forehead, or back.
  • Isolated species were lipid-dependent: Malassezia sympodialis (58%) and Malassezia slooffiae (30%).

Conclusions:

  • The external ear canal is the primary site for Malassezia colonization in healthy pigs.
  • Lipid-dependent Malassezia species are the predominant yeasts found in this pig population.
  • This study provides current data on Malassezia occurrence in pigs, considering recent taxonomic changes.

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