Commercial pig weaning typically occurs at 3-4 weeks, far earlier than the natural weaning age of 12-17 weeks. This early separation causes significant stress for both sows and piglets.
Early weaning in commercial pig production creates a predictable welfare crisis at two levels simultaneously: the sow loses her litter and experiences acute separation distress, and the piglets face an abrupt transition for which they are not physiologically ready. Their immature immune and digestive systems make them vulnerable to enteric disease; their social learning from the sow is truncated; and the stress of mixing with unfamiliar piglets in a new environment compounds the stress of maternal separation. Welfare-improved weaning approaches - later weaning age, enriched environments, gradual dietary transition - reduce suffering while often improving production outcomes.