ONYANGO E M,HESTER P Y,STROSHINE R,et al.Bone densitometry as an indicator of percentage tibia ash in broiler chicks fed varying dietary calcium and phosphorus levels[J].Poultry Science,2003,82(11):1787-1791.
FRITTS C A,WALDROUP P W.Effect of source and level of vitamin D on live performance and bone development in growing broilers[J].The Journal of Applied Poultry Research,2003,12(1):45-52.
[4]
NORMAN A W.The vitamin D endocrine system[J].Physiologist,1985,28(4):219-232.
[5]
麻益良,何瑞国.25-羟胆钙化醇对鸡的营养生理学作用[J].山东家禽,1997(5):27-28.
[6]
EDWARDS H M,Jr.Studies on the efficacy of cholecalciferol and derivatives for stimulating phytate utilization in broilers[J].Poultry Science,2002,81(7):1026-1031.
[7]
VIETH R.Vitamin D supplementation,25-hydroxyvitamin D concentrations,and safety[J].American Journal of Clinical Nutrition,1999,69(5):842-856.
[8]
FUKUSHIMA M,SUZUKI Y,TOHIRA Y,et al.25-Hydroxylation of 1alpha-hydroxyvitamin D3 in vivo and in perfused rat liver[J].FEBS Letters,1976,65(2):211-214.
[9]
EDELSTEIN S,NOFF D,FREEMAN D M,et al.Synthesis of 1 alpha-hydroxy cholecalciferol and its metabolism in the chick[J].Biochemical Journal,1978,176(1):111-117.
[10]
CROMWELL G L.Effects of dietary calcium and phosphorus on performance and carcass,metacarpal and turbinate characteristics of swine[J].Journal of Animal Science,1972,34(5):746-751.
[11]
SNOW J L,BAKER D H,PARSONS C M.Phytase,citric acid,and 1alpha-hydroxycholecalciferol improve phytate phosphorus utilization in chicks fed a corn-soybean meal diet[J].Poultry Science,2004,83(7):1187-1192.
MORRISSEY R L,COHN R M,EMPSON R N,Jr,et al.Relative toxicity and metabolic effects of cholecalciferol and 25-hydroxycholecalciferol in chicks[J].The Journal of Nutrition,1977,107(6):1027-1034.