Welfare outcome indicators — measures of what animals are actually experiencing — are transforming how welfare is assessed. Moving beyond input standards to outcome measurement is a critical advance in welfare science.
Welfare outcome measurement represents a shift from regulatory compliance to genuine welfare assurance. A farm meeting all input standards but with high lameness prevalence, poor plumage condition and elevated mortality is not delivering good welfare despite compliance. The shift to outcome-based assessment is happening progressively, driven by welfare science, retailer requirements and regulatory evolution.