Gestation crates for sows have been banned or phased out in many jurisdictions following evidence of severe welfare harm, representing a major but incomplete welfare advance.
Gestation crates represent one of the most well-documented cases of severe, preventable animal suffering in agriculture. Sows unable to turn around for months at a time develop muscle atrophy, pressure sores, and psychological distress manifested as repetitive stereotypic behaviors. The scientific case against gestation crates is unambiguous. The transition to group housing represents genuine welfare progress, though group systems require careful management to prevent aggression injuries. The persistence of crates in parts of the industry reflects economic rather than welfare reasoning.