Welfare assessment has historically focused on negative indicators of suffering. Positive welfare science identifies indicators of good welfare states, enabling farms to demonstrate and improve animal flourishing rather than merely absence of suffering.
The shift toward positive welfare indicators represents a conceptual advance in farm animal welfare assessment that changes what farms are measured against and aspired to. If welfare is assessed only through the lens of suffering reduction, a farm that successfully prevents all measurable suffering but provides no opportunity for pleasure, play, or positive experience achieves the minimum standard without achieving genuine welfare. Positive welfare science argues that animals have capacity for positive affective states — contentment, curiosity, playfulness, and pleasure — and that good welfare requires their expression, not merely the absence of negative states. This matters practically because it directs enrichment investments toward outcomes that are measurably beneficial rather than merely harmless. Research on play behavior in farm animals demonstrates that play is a robust indicator of positive affective state that can be reliably measured and tracked: herds or flocks that play regularly are expressing genuine positive welfare, not merely tolerating their conditions. Incorporating positive welfare indicators into certification standards provides farms with aspirational targets and consumers with more meaningful welfare information.