Scientific understanding of gestation crate welfare impacts has grown substantially. The latest research strengthens the welfare case for group housing while identifying management challenges that need addressing.
The science on gestation crate welfare is now robust: confinement in crates causes documented welfare harm through behavioral restriction, musculoskeletal deterioration, and chronic stress. The welfare case for group housing is well-supported. The scientific nuance is in the management of group housing challenges - aggression and feeding competition are genuine welfare risks in poorly managed group systems. This nuance has sometimes been used to argue that crates prevent greater welfare harm, but this argument fails because well-managed group housing does not have these problems at scale. The scientific literature consistently shows that properly designed and managed group housing systems provide substantially better welfare than gestation crates even accounting for mixing-related aggression.