Chrysosporium spp

From Cow
Chrysosporium spp under light microscopy

Chrysosporium spp are a ubiquitous saprophytic fungus which has been associated with foot rot in cattle worldwide.

These keratinophilic fungi are airborne around dairy barns and can contaminate milk[1]. They also normally reside on bovine skin, particularly the interdigital region of the hoof and can be associated with interdigital dermatitis although they are often secondary invading organisms.

Pathogenic species identified in cattle include:

  • Chrysosporium keratinophilum[2]
  • Chrysosporium parvum
  • Chrysosporium gourii[3]
  • Chrysosporium indicum
  • Chyrsosporium tropicum[4]

Diagnosis is based on isolation and identification of this parasite based on culture and PCR assays[5].

Treatment is usually effective with copper sulphate foot baths in cattle with dermatophytic foot rot.

References

  1. Delavenne E et al (2011) Fungal diversity in cow, goat and ewe milk. Int J Food Microbiol 151(2):247-251
  2. Mitra SK et al (1998) Dermatophytes isolated from selected ruminants in India. Mycopathologia 142(1):13-16
  3. Jain PC et al (1993) Chrysosporium gourii Jain, Deshmukh & Agrawal sp. nov. Mycoses 36(3-4):77-79
  4. Al-Musallam AA et al (1990) Distribution of keratinophilic fungi in animal folds in Kuwait. Mycopathologia 112(2):65-70
  5. Efuntoye MO & Fashanu SO (2002) Fungi isolated from skins and pens of healthy animals in Nigeria. Mycopathologia 153(1):21-23