Commercial pig farming typically weans piglets at 3-4 weeks — far earlier than the natural weaning age of 12-17 weeks — causing significant stress and behavioral problems.
Early weaning is a foundational welfare compromise in commercial pig production that cascades into multiple subsequent welfare problems. Piglets removed from their mothers at 3 weeks have not developed the behavioral, immunological, or nutritional independence they need, leading to distress behaviors and disease susceptibility. Each additional week before weaning measurably reduces behavioral problems and post-weaning disease. Welfare standards that enforce minimum weaning ages, require gradual transition management, and provide appropriate post-weaning environments represent important incremental improvements within existing systems.