Group housing of dry sows, now mandatory in the EU for most of gestation, improves welfare substantially compared to individual stalls when managed effectively.
Individual gestation stalls prevent natural movement, social interaction, and expression of foraging behaviour, causing chronic frustration. Group housing significantly improves welfare by allowing locomotion and social behaviour but introduces risks of aggression, competition, and injury if poorly managed. Stable group composition, ESF, adequate space, and physical enrichment combine to deliver both welfare improvements and productive performance.