Play behavior in pigs is a reliable indicator of positive welfare states, and farming systems that enable play see measurable improvements in productivity and animal health.
Play is increasingly recognized in animal welfare science as a direct indicator of positive affective states rather than merely the absence of suffering. Pigs are among the most play-active of farmed species, with play behavior documented across all age groups under appropriate conditions. When farming systems allow sufficient space, social stability, and environmental enrichment, pigs invest substantial time in play — social play, object play, and locomotor play are all commonly observed. This matters practically: farms that invest in enrichment report lower injury rates, reduced antibiotic use, and sometimes improved growth rates because stress is a significant production inhibitor. Measuring play frequency can serve as a practical on-farm welfare indicator alongside more traditional measures.