共 8 条
[2]
APPLEBY MC, 1983, BEHAV ANAL LETT, V3, P345
[4]
DORMINEY RW, 1974, POULTRY SCI, V53, P1886, DOI 10.3382/ps.0531886
[5]
Ensminger M.E., 1980, POULTRY SCI
[6]
EFFECTS OF AGE, ACCESS AND TIME OF DAY ON PERCHING BEHAVIOR IN THE DOMESTIC-FOWL
[J].
APPLIED ANIMAL ETHOLOGY,
1982, 8 (04)
:357-364
[8]
1982, SAS USERS GUIDE BASI