Gestation crates that confine pregnant sows so they cannot turn around are being phased out in many countries following sustained welfare advocacy.
Gestation crates represent one of the most widely criticized intensive farming practices. Prolonged confinement in crates prevents virtually all natural behavior, causes muscle atrophy, bone weakness, urinary tract infections, and severe psychological distress. Sows in crates show high rates of stereotypic behaviors including repetitive bar-biting. Group housing with individual feeding stalls provides welfare improvements while maintaining farm management.