Welfare outcome measures assess the actual experience of cattle rather than just resource inputs. Animal-based indicators provide the most direct evidence of welfare status on farm.
Resource-based measures (stocking density, bedding type) are easier to assess but less direct than animal-based measures. Farms with identical facilities can show vastly different welfare outcomes depending on stockperson quality and management style. Regular outcome-based assessment enables targeted improvement rather than tick-box compliance. The transition from input-based to outcome-based regulation represents the frontier of welfare science application.