共 72 条
[1]
Al-Rawi B., 1975, Applied Animal Ethology, V2, P69, DOI 10.1016/0304-3762(75)90066-8
[6]
APPLEBY MC, 1985, 2ND P EUR S POULTR W, P137
[7]
BALLANTYNE AJ, 1988, P CAGES FUTURE CAMBR, P22
[10]
BLACK AH, 1974, BR VET J, V128, P153