世界农场动物福利协会：2024年美国猪追踪报告（英文版）

Gestation crates are one of the most extreme examples of physical confinement for farm animals today. Gestation crates are typically 7 ft x 2 ft narrow pens made of metal bars providing only 14 ft2 of space for a sow.4 Each crate is only slightly larger than the body of a sow. Inside the gestation crate, a breeding sow is only able to stand up, lie down, and take one step backward and forward. The sow is unable to turn around, walk, or fully extend her legs. At the front of the crate is a fee