foal immunodeficiency syndrome

English

Noun

foal immunodeficiency syndrome (uncountable)

  1. A recessive genetic disease that mainly affects two breeds of ponies: the Fell and Dales. Affected foals appear normal at birth, but become weak, and either die or must be euthanized by three months of age due to persistent infections caused by immunodeficiency.
    Synonyms: Fell pony syndrome, FIS