Genetic Selection and Livestock Welfare

Decades of intensive genetic selection for production traits have created health and welfare problems in livestock that require systematic reversal through breeding programme reform.

Key Facts

Broiler chickens have been bred to grow 300% faster than 1950s birds, causing skeletal problems
High-producing dairy cows are in chronic negative energy balance due to milk yield genetics
Extreme sow prolificacy has increased piglet numbers but reduced individual piglet survival
Trait-balanced breeding programmes can improve production while reducing welfare-relevant health problems

Welfare Considerations

The welfare consequences of production-focused genetic selection are now well-documented: rapid-growing broilers suffer leg disorders, breast blisters, and heart problems; highly-bred dairy cows suffer metabolic disease and lameness; prolific sows have insufficient milk for large litters. Reform requires incorporating welfare traits alongside production traits in breeding indices, setting maximum acceptable levels for harmful traits, and rewarding slower but healthier animal performance in the market.

What You Can Do

Support certification schemes that prohibit the most extreme production breeds
Advocate for mandatory inclusion of welfare traits in livestock breeding indices
Choose products from slower-growing poultry breeds when available
Support research into balanced breeding programmes that improve both performance and welfare