Sow stalls (gestation crates) are one of the most welfare-problematic practices in industrial pig farming, confining pregnant sows in spaces too narrow to turn around for months at a time.
Sow stall confinement represents a sustained welfare failure of extraordinary duration. A sow who spends her entire reproductive life in a space too small to turn around cannot engage in any natural pig behaviour: no rooting, no walking, no social interaction, no nest building before farrowing. The physical consequences include severe muscle atrophy, pressure sores from inability to change posture, and cardiovascular deconditioning. The psychological consequences are reflected in high rates of stereotypic behaviours indicating chronic frustration and the absence of positive experiential states. Animals with cognitive complexity comparable to dogs are maintained in conditions that would cause immediate public outrage if applied to canines. The availability of group housing systems that maintain sow welfare while meeting production goals demonstrates that sow stalls are not an agricultural necessity but a cost-minimisation choice.