Transitioning from gestation crates to group housing requires careful management during the mixing period to protect sow welfare from aggression while maintaining the long-term welfare benefits of group living.
Gestation crate to group housing transition is a welfare improvement that requires careful implementation to prevent short-term welfare costs from undermining long-term gains. The aggression during mixing that opponents of group housing cite as a welfare concern is real but manageable through appropriate protocols. ESF systems allow individual feeding without competition; space allocation above minimum requirements reduces resource competition; and mixing protocols that stabilize groups early in gestation prevent repeated regrouping. The welfare trajectory is clear: acute mixing stress followed by stable group living with access to normal social behaviors is superior to the chronic welfare compromise of gestation crate confinement throughout pregnancy.