4Harms R H, Roland Sr D A, Simpson C F. Experimentally induced fatty liver syndrome conditions in laying hens [J]. Poultry science, 1977, 56 (2): 517-520.
5Yamashiro S, Umemura T, Bhatnagar M K. Haemorrhagic liver syndrome of broiler chickens fed diets containing rapeseed products[J]. Research in Veterinary Science, 1977, 23 (2): 179-184.
6Wolford J H, Polin D. Lipid accumulation and hemorrhage in livers of laying chickens. A study on fatty liver-hemorrhagic syndrome (FLHS)[J]. Poultry science, 1972, 51(5): 1707-1713.
7Gordon R W, Roland Sr DA. Performance of cornmercial laying hens fed various phosphorus levels without and without supplemental phytase[J]. Pouh Sci, 1997, 76(8): 1172-1177.