Modern broiler chickens are bred for extreme growth rates that cause cardiovascular disease, leg problems, and chronic pain. Slower-growing genetics represent a significant welfare improvement.
The genetic manipulation of broiler chickens for maximum growth rate is one of the most significant animal welfare problems in modern agriculture. These birds are born into bodies that are fundamentally incompatible with normal activity. Transitioning to slower-growing breeds, while more expensive, represents a transformative welfare improvement affecting billions of animals annually.