How social play in pigs indicates positive welfare states and why production systems that enable play produce better welfare and often better performance outcomes.
Pig play is more than an indicator of happiness — it is a behavioral window into the emotional and cognitive state of the animal. Systems that enable play produce animals with better stress coping ability, more positive affective states, and lower rates of the damaging behaviors that plague intensive production. The welfare and commercial cases are aligned: farms where pigs play regularly have lower injury rates, better feed conversion, and reduced antibiotic use. Incorporating play frequency as a welfare indicator in farm assessment programs provides a practical, positive measure that motivates improvement beyond minimum standards.