Modern farm animal breeds have narrowed genetic diversity significantly - rare breed conservation preserves genetic options and often delivers better welfare outcomes.
Genetic diversity in farm animals has a welfare dimension that goes beyond conservation interest. Breeds selected for extreme production traits often carry welfare costs built into their genetics - fast growth, high milk yield, and egg production at the expense of longevity, health, and behavioural expression. Rare and heritage breeds, while less economically efficient by conventional metrics, often demonstrate better welfare in extensive systems. Supporting rare breed products creates market incentives for genetic diversity conservation that serves both welfare and long-term food system resilience.