Livestock Genetic Diversity and Welfare

Narrow genetic diversity in livestock breeds compromises individual health and welfare, as well as long-term resilience of farming systems to disease and climate change.

Key Facts

Commercial poultry production is dominated by fewer than five genetic lines globally.
Intensive selection for single traits like growth rate or milk yield increases disease susceptibility.
Inbreeding depression reduces immune function, fertility, and lifespan in many livestock species.
Over 100 farm animal breeds have become extinct in the past century due to commercial consolidation.
Genomic diversity tools allow selection for health and robustness alongside production traits.

Welfare Considerations

Genetic narrowing in livestock creates animals poorly adapted to varied conditions and inherently more susceptible to disease and welfare problems. Broiler chickens selected for extreme growth rates suffer skeletal disorders, cardiovascular failure, and chronic pain as a direct consequence of their genetics. Conservation of heritage breeds, genomic selection incorporating health traits, and regulatory support for genetic diversity maintenance all contribute to improved long-term welfare outcomes.

What You Can Do

Support heritage breed conservation programmes and rare breed farms.
Choose meat and dairy products from breeds known for health and longevity rather than extreme production.
Advocate for breeding policy reform that mandates health and welfare trait inclusion.
Support research into genomic tools that identify disease resistance and welfare-relevant traits.
Engage with farm assurance schemes that reward breeds with lower inherent health problems.