The space allowance provided to pigs is among the most intensively researched welfare variables in farm animal science. Regulatory minimums often fall below what research suggests is needed for welfare-positive outcomes.
Pig space allowance welfare research demonstrates a clear dose-response relationship between space and welfare outcomes: more space means less aggression, better resting synchrony, more opportunity for natural behavior, and lower injury rates. The EU regulatory minimum was set below the welfare optimum as a compromise between welfare science and industry economics. Certification schemes that require higher space allowances therefore represent genuine welfare improvement, not just marketing. Consumer willingness to pay for higher-welfare pork is a critical lever for shifting industry norms toward welfare-positive densities.