The emerging science of positive pig welfare moves beyond absence of suffering to identify and promote genuine positive emotional states including play, curiosity, and social engagement in commercial systems.
The positive welfare movement in pig farming represents a paradigm shift from preventing harm to actively promoting wellbeing. This distinction matters because a pig that is free from disease, pain, and hunger may still be experiencing a neutral or mildly negative emotional state if it lacks stimulation, choice, and opportunity for natural behavior expression. Positive welfare indicators in pigs include play behavior, exploration of novel objects and environments, social grooming, and the curled tail posture that indicates relaxed emotional states. Farms that score well on positive welfare indicators tend to have lower tail biting, better growth rates, and reduced antibiotic use, demonstrating that positive welfare aligns with producer interests. Progressive certification schemes are beginning to require positive welfare indicator measurement alongside traditional negative welfare assessments.