The scientists compared the number of injuries, which usually occur while scrambling for a feeding position, and the weight gain of the piglets which were provided with plastic plates, foam mats, waterbeds, straw or concrete.

• 小猪常常会为了吃东西抢个好位置而受伤。科学家们分别比较了小猪生活在塑胶垫、泡沫垫、水床、干草和水泥环境中受伤和长胖的几率。