Gestation crates confine pregnant sows individually for most of their pregnancy, causing severe behavioral deprivation that welfare science has extensively documented.
Gestation crates are one of the most welfare-damaging confinement systems in industrial agriculture. Sows are highly intelligent, motivated animals; the inability to turn around, walk, or interact with other pigs for months at a time causes profound psychological harm manifesting as repetitive behaviors, muscle weakness, and heightened stress reactivity. Alternatives work - the welfare case for their phase-out is overwhelming.