Pig welfare assessment is transitioning from input-based compliance checking to outcome-based measurement. This shift enables more honest welfare evaluation and drives meaningful improvement.
The transition from input-based to outcome-based pig welfare assessment represents one of the most significant conceptual and practical advances in farm animal welfare standards. A farm that meets all documented space, enrichment, and management requirements can still have unacceptable lameness rates, tail biting injuries, and chronically stressed pigs — outcomes that input auditing completely misses. Outcome metrics provide a more honest picture of actual welfare status and create feedback loops that motivate improvement toward measurable targets rather than minimum process compliance. Slaughterhouse-based welfare assessment — examining animals at the point of slaughter for welfare indicators including injuries and disease lesions — provides accessible, large-sample welfare data at no additional on-farm cost. The Welfare Quality protocol approach of combining multiple measures into welfare scores enables benchmarking between farms and over time.