Farrowing crates confine sows during and after birth to protect piglets from crushing, but impose severe movement restriction causing significant welfare harm that has driven research into welfare-compatible alternatives.
The farrowing crate debate exemplifies one of the most genuinely difficult welfare trade-offs in farm animal production. Confinement in farrowing crates causes clear, measurable welfare harm to sows — the inability to turn around, perform nesting, or move freely during the physiologically demanding period of farrowing and lactation causes frustration, stereotypic behaviour, and chronic stress. This is a significant welfare harm to millions of sows globally. However, removal of farrowing crates without replacement of appropriate alternative systems increases piglet crushing mortality — a welfare harm to millions of piglets. The ethical resolution is not to accept farrowing crates as necessary but to invest in developing and implementing alternative farrowing systems that protect piglets while restoring sow freedom of movement. Free-farrowing pens designed with appropriate crushing-prevention features — including sloped sides, low barriers that allow piglets to escape but restrict sow movement at critical moments — have been demonstrated to achieve acceptable piglet mortality while dramatically improving sow welfare. The UK's commitment to ending farrowing crates by 2030 requires substantial farm-level investment supported by government and industry.