Broiler Fast-Growth Breeds: Welfare Problems and Slower-Growing Alternatives

Modern fast-growing broiler breeds have welfare problems linked to their extreme growth rate. Slower-growing breeds offer significant welfare improvements at modest cost.

Key Facts

Conventional broiler breeds have been selectively bred to reach slaughter weight in 35-42 days
Fast-growth rates cause skeletal disorders including tibial dyschondroplasia and valgus varus deformity in up to 30% of birds
Cardiac disorders including sudden death syndrome and ascites are linked to rapid growth demands on the cardiovascular system
Lameness in fast-growing broilers is associated with significant pain and welfare costs
Slower-growing breeds taking 56+ days to slaughter weight show dramatically lower lameness rates
The Better Chicken Commitment adopted by 300+ companies globally requires slower-growing breeds
Slower-growing broilers have better leg health, cardiovascular function, and activity levels

Welfare Considerations

The welfare problems of modern fast-growing broiler breeds are among the most significant in animal agriculture because of the scale - over 60 billion broiler chickens are raised annually. Skeletal disorders causing lameness mean a substantial proportion of all broilers experience chronic pain during the final weeks of their lives. The extreme metabolic demands of rapid growth cause cardiovascular strain that kills birds suddenly. These problems are inherent to the genetic selection for maximum growth rate and cannot be adequately addressed through management alone. Slower-growing breeds represent a genuine welfare improvement that the industry can implement.

What You Can Do

Choose chicken products with certifications requiring slower-growing breeds such as Global Animal Partnership 3+
Support companies that have signed the Better Chicken Commitment with slower-growing breed requirements
Engage with restaurants and fast food companies requesting their broiler welfare commitments
Reduce poultry consumption or choose plant-based alternatives as a welfare-positive choice
Learn about the connection between growth rate and welfare problems to advocate effectively
Support welfare certification schemes that include breed-specific welfare requirements
Encourage supermarkets and retailers to stock and promote higher-welfare chicken products