Farm Animal Welfare

Broiler Chicken Fast Growth and Welfare

Modern fast-growing broiler breeds have been selectively bred for rapid weight gain, which causes significant welfare problems including leg disorders and cardiovascular disease.

Key Facts

Modern broilers reach slaughter weight in 33-42 days compared to 84+ days historically
Fast-growing breeds experience leg disorders in up to 30% of birds at commercial scale
Tibial dyschondroplasia and hock burn are common indicators of welfare failure
Ascites (fluid accumulation) from cardiac overload affects up to 5% of fast-growing birds
Slower-growing breeds show markedly better leg health and activity levels
EU welfare label schemes increasingly require slower-growing breeds

Welfare Considerations

The genetic selection for rapid growth has created a welfare crisis in broiler production. Birds that grow so rapidly they struggle to walk, spend disproportionate time lying in litter, and suffer painful joint conditions cannot be considered to have good welfare. The welfare improvements from switching to slower-growing breeds are among the most evidence-supported changes available to the poultry industry.

What You Can Do

Choose chicken labelled as higher welfare or from slower-growing breeds
Support retailers and food service companies with better broiler commitments
Advocate for breed welfare standards to be included in farm assurance schemes
Consider reducing chicken consumption while industry practices improve