Trichostrongylus axei

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General

  • Small trichostrongyle, <5mm long; stomach.

Life-Cycle

  • Typical non-migratory LC confined to stomach wall.
  • Prepatent period = 3 1/2 weeks.

Pathogenicity

  • Similar to Ostertagia, except L3 penetrate mucosa between gastric glands. Leads to hyperplastic nodular lesions (several cms diameter) and erosions where epithelium is lost. Not usually a primary pathogen in horses.