The welfare case for phasing out farrowing crates is scientifically robust, with evidence accumulating that well-designed loose housing alternatives protect both sow and piglet welfare.
Farrowing crates cause significant sow welfare impacts through prevention of species-typical nest-building behaviour, severe restriction of movement for weeks, and inability to respond normally to piglet vocalisations. Sows in crates show higher frustration behaviours and physiological stress markers. The welfare trade-off between sow movement restriction and piglet crushing risk can be effectively managed in well-designed loose systems without returning to the movement restriction of crates. Transition support for farmers is essential to maintain piglet survival welfare during the switch.