Modern animal welfare science increasingly recognizes that good welfare requires positive emotional states, not just the absence of negative ones. This shifts how we design and assess farm environments.
The shift from welfare as "freedom from suffering" to welfare as "presence of positive experiences and absence of negative ones" represents a fundamental expansion of what good farm animal welfare means in practice. Under the older framework, a confined pig that is not injured, diseased, or visibly distressed has adequate welfare. Under the positive welfare framework, that same pig without play opportunities, foraging motivation expression, social exploration, and positive anticipation has inadequate welfare even if all negative indicators are absent. This expanded framework demands more from farm systems — it is not sufficient to prevent harm; systems must actively enable wellbeing. The practical implication is that welfare reform must go beyond minimum standards preventing the worst abuses to actively promoting environments where animals can experience positive states. This is both a higher bar and a more achievable goal for welfare advocates to articulate to producers and policymakers.