共 55 条
[3]
ASHTON WLG, 1990, POULTRY DISEASES, P11
[5]
BERKHOFF HA, 1985, AM J VET RES, V36, P583
[6]
BICKFORD A A, 1978, Avian Diseases, V22, P503, DOI 10.2307/1589306
[7]
BICKFORD AA, 1975, AM J VET RES, V36, P586