Livestock

Fast-Growth Broiler Breeds and Welfare

Conventional fast-growing broiler breeds reach slaughter weight in 35-42 days but experience significant welfare problems including leg disorders, heart conditions and chronic pain.

Key Facts

Conventional broiler breeds have been selected for 400% faster growth than 1950s breeds
Up to 25% of conventional broilers show detectable lameness at slaughter
Ascites and sudden death syndrome are leading causes of mortality in fast-growth birds
Slower-growth breeds take 56+ days to slaughter but show significantly better welfare outcomes

Welfare Considerations

The welfare of fast-growth broilers is compromised by breed selection that prioritises muscle mass over skeletal and cardiovascular health. Birds spend increasing proportions of their final days lying down, limiting access to feed, water and engagement with the environment. Scientific consensus strongly supports transition to slower-growth breeds as the most effective welfare intervention.

What You Can Do

Choose chicken products from slower-growth breed schemes such as RSPCA Assured or Better Chicken Commitment certified brands
Support retailers and food service companies that have committed to the Better Chicken Commitment
Ask your preferred restaurants and supermarkets to publish their broiler welfare policies
Support legislative reform requiring slower-growth breed standards in commercial production