Outcome-based welfare assessment using observable indicators at slaughter is transforming how broiler chicken welfare is monitored and reported in welfare-certified supply chains.
Outcome-based welfare assessment represents a significant advance over input-based standards because it measures what animals actually experience rather than simply what conditions they are housed in. A farm can meet all housing standards and still produce severely lame birds if management is poor. Conversely, farms that monitor and respond to welfare outcome data can achieve good welfare even within constrained infrastructure. The shift toward outcome measurement at the slaughter line is powerful because it is difficult to falsify — the condition of birds arriving at slaughter reflects their welfare history in the preceding weeks. Making this data publicly available creates accountability and enables consumer and investor pressure to drive industry-wide improvement in a way that unverified housing claims cannot.