Horse breeding practices shape the health and welfare of every individual produced; selection for conformation, movement, and performance must not override welfare considerations.
Horse breeding welfare follows the same principles as companion animal breed reform: selection for extreme traits that compromise health and function causes chronic, preventable suffering in every individual produced. The Quarter Horse HYPP story — where selection for a single sire's muscling spread a genetic disease through much of the breed — is a cautionary tale applicable across equine disciplines. Breeding programs that prioritize soundness, longevity, and health alongside performance traits produce horses with better welfare across their entire working lives. Genetic testing, breed health schemes, and transparent health outcome reporting are the tools available to breeders who prioritize welfare.