Selective breeding for production traits has created welfare challenges in multiple livestock species. Understanding how genetics drives welfare outcomes is essential for advocating meaningful reform.
Livestock genetics welfare is a system-level problem created by decades of single-trait selection without welfare constraints. The consequences - birds that cannot walk, cows that metabolically collapse, sows whose litters exceed their nursing capacity - are now embedded in commercial genetics that are difficult and slow to reform. Welfare-positive genetics requires incorporating welfare traits (health, longevity, behavioral normalcy, locomotion) into breeding indices alongside production measures. Some breed organizations and certification schemes now include welfare-related genetic criteria. Consumer demand for welfare-certified products creates economic incentives for genetic reform.