共 18 条
[2]
COPPOCK CE, 1986, J DAIRY SCI, V69, P111, DOI 10.3168/jds.S0022-0302(86)80375-7
[5]
HAALAND GL, 1982, J ANIM SCI, V55, P935
[9]
NICHOLSON J. W. G., 1962, CANADIAN JOUR ANIMAL SCI, V42, P82