Advanced examination of genetic health considerations in horse breeding, including heritable conditions, genetic diversity, and the welfare implications of selection decisions that propagate across generations.
Responsible horse breeding is a welfare issue with intergenerational impact — breeding decisions made today affect the welfare of horses born over the next decade or more. The existence of preventable genetic conditions that cause severe welfare harm (HYPP causing episodes of muscle tremors and weakness; HERDA causing skin fragility so severe that affected horses cannot be ridden) in breeds where carrier testing is available makes responsible breeding straightforward: test before mating and avoid producing affected offspring. Less obvious welfare implications of conformation selection and inbreeding accumulate more slowly but have equally real welfare consequences for the horses produced. Breeding toward health and welfare rather than purely toward performance or aesthetic standards is both ethically required and practically possible.