Early weaning of piglets — separating them from their mothers at 3-4 weeks rather than the natural 12-17 weeks — causes significant stress and welfare problems. This practice is standard in industrial pig farming worldwide.
Weaning is one of the most stressful events in a commercial pig life. Simultaneously separated from mother, mixed with unfamiliar pigs, moved to a new environment, and challenged to eat solid food, piglets experience a cascade of stressors. The result is visible: piglets that huddle, belly-nose each other compulsively (a suckling substitute behavior), fight with strangers, and frequently fall ill. Welfare-forward farms extend weaning age, provide rich post-weaning environments with familiar social groups and play materials, and use gradual nutritional transitions to reduce the severity of this life event.