Overview of the relationship between broiler growth rate, breed selection, and welfare outcomes.
Broiler growth rate and welfare are directly linked through breed selection. Fast-growing breeds have been selected for rapid muscle accumulation that creates welfare problems including leg disorders, cardiovascular disease, and mobility impairment. Slower-growing breeds demonstrate dramatically better welfare outcomes on these indicators. The welfare case for breed reform is compelling, with the Better Chicken Commitment providing a corporate framework. Consumer willingness to pay the price premium determines adoption speed.