Modern animal welfare science has moved beyond preventing suffering to actively promoting positive emotional states. Understanding and measuring positive welfare is transforming farm animal management.
The shift toward promoting positive welfare states rather than merely preventing negative ones represents a transformation in how we conceptualize animal welfare. An animal free from obvious suffering but living in a barren, understimulating environment may be free from acute negative states while experiencing a persistent mildly negative or neutral affective state — welfare that falls short of what we should aspire to provide. Evidence that farm animals experience positive emotions — joy during play, pleasure from scratching, satisfaction from completing natural behaviors — creates an obligation to enable these states. Practical implications include enriched environments, positive human-animal interactions, choice and control where feasible, and management that actively creates opportunities for positive experience.