Effects of Body-Mounted Inertial Measurement Unit (IMU) Backpacks on Space Use and Behaviors of Laying Hens in a Perchery System oleh Luwei Nie, Qian Hu, Qin Tong, Chao Liang, Baoming Li, Mingxia Han, Yuling You, Xingyan Yue, Xiao Yang, Chaoyuan Wang