Farm Animal Genetic Diversity and Welfare

Intensive selection for production traits in farm animals has created breeds with structural and health problems that directly compromise individual animal welfare at population scale.

Key Facts

Modern broiler chickens have been selected to grow 4 times faster than 1950s breeds
High-yielding Holstein dairy cows are more prone to metabolic disease than dual-purpose breeds
White turkeys bred for large breast muscle often cannot reproduce naturally
Genetic diversity in farm animal populations has narrowed dramatically due to AI and a small number of elite sires
Heritage and dual-purpose breeds often have superior welfare outcomes compared to hyper-selected production breeds

Welfare Considerations

The welfare costs of extreme genetic selection are borne entirely by the animals themselves. Broiler chickens with skeletal problems are unable to walk, reach water, or compete for food. High-yielding dairy cows experience metabolic demands that their physiology cannot sustain without compromising health and longevity. White turkeys and some pig breeds cannot reproduce without human intervention. Restoring genetic diversity through support for heritage breeds, limiting over-reliance on single bloodlines, and selecting for welfare traits alongside production traits represents a fundamental improvement in farm animal welfare at population scale.

What You Can Do

Choose products from heritage or dual-purpose breeds where they are available and labelled
Support farms and certification schemes that breed for welfare alongside production
Advocate for genetic diversity as a welfare standard in farm animal selection
Reduce consumption of products from hyper-selected breeds with known welfare problems
Support research into the welfare impacts of intensive selective breeding