Breed health initiatives that track and reduce hereditary disease prevalence in livestock breeds have delivered significant welfare improvements across cattle, sheep, and pig breeding populations.
Breed health initiatives demonstrate that population genetics can be directed toward welfare improvement as well as production optimisation. By collecting health data from large populations, identifying genetic markers for disease-relevant traits, and incorporating them into breeding evaluation, hereditary disease prevalence can be reduced over multiple generations. The timescale is longer than management interventions but the impact is permanent: genetic improvements persist through all subsequent generations without ongoing management effort. Mandatory health data recording, scheme participation requirements, and transparent genetic evaluation sharing accelerate progress.