[1] DOBRZANSKI Z, KORCZYNSKI M, CHOJNACKA K, et al.Influence of organic forms of copper, manganese and iron on bioaccumulation of these metals and zinc in laying hens[J].Journal of Elementology, 2008, 13(3):309-319.
[2] ELMADFA I, MUSKAT E.Wielkie tabele kalorii i warto ś ci od ż ywczych[M].Warszawa:Muza SA, 2003:120-128.
[3] MONDAL M K, DAS T K, BISWAS P, et al.Influence of dietary inorganic and organic copper salt and level of soybean oil on plasma lipids, metabolites and mineral balance of broiler chickens[J].Animal Feed Science and Technology, 2007, 139(3/4):212-233.
[4] BERTSCH A, COELLO N.A biotechnological process for treatment and recycling poultry feathers as a feed ingredient[J].Bioresource Technology, 2005, 96(15):1703-1708.

[5] 袁建敏, 甘冰, 张天国, 等.肉用仔鸡日粮中添加蛋氨酸铜、锌和锰对粪便微量元素排放的研究[J].家畜生态学报, 2009, 29(6):66-70, 75.
[6] STAHL J L, GREGER J L, COOK M E.Zinc, copper, and iron utilisation by chicks fed various concentrations of zinc[J].British Poultry Science, 1989, 30(1):123-134.

[7] PAIK I, LEE H, PARK S.Effects of organic iron supplementation on the performance and iron content in the egg yolk of laying hens[J].The Journal of Poultry Science, 2009, 46(3):198-202.

[8] SKŘIVAN M, SK ŘIVANOVA V, MAROUNEK M.Effect of various copper supplements to feed of laying hens on Cu content in eggs, liver, excreta, soil, and herbage[J].Archives of Environmental Contamination and Toxicology, 2006, 50(2):280-283.

[9] MABE I, RAPP C, BAIN M M, et al.Supplementation of a corn-soybean meal diet with manganese, copper, and zinc from organic or inorganic sources improves eggshell quality in aged laying hens[J].Poultry Science, 2003, 82(12):1903-1913.

[10] PARK S Y, BIRKHOLD S G, KUBENA L F, et al.Review on the role of dietary zinc in poultry nutrition, immunity, and reproduction[J].Biological Trace Element Research, 2004, 101(2):147-163.

[11] BURKETT J L, STALDER K J, POWERS W J, et al.Effect of inorganic and organic trace mineral supplementation on the performance.Carcass characteristics, and fecal mineral excretion of phase-fed, grow-finish swine[J].Asian-Australasian Journal of Animal Sciences, 2009, 22(9):1279-1287.

[12] ELLERSIECK M R, VEUM T L, BOLLINGER D W, et al.Comparison of growth performance and zinc absorption, retention, and excretion in weanling pigs fed diets supplemented with zinc-polysaccharide or zinc oxide[J].Journal of Animal Science, 2005, 83(10):2380-2386.
[13] HILL R, MATHERS J W.Manganese in the nutrition and metabolism of the pullet[J].British Journal of Nutrition, 1968, 22(04):625-633.

[14] PAYNE R L, LAVERGNE T K, SOUTHERN L L.Effect of inorganic versus organic selenium on hen production and egg selenium concentration[J].Poultry Science, 2005, 84(2):232-237.

[15] LEE S H, CHOI S C, CHAE B J, et al.Evaluation of metal-amino acid chelates and complexes at various levels of copper and zinc in weanling pigs and broiler chicks[J].Asian-Australian Journal of Animal Science, 2001, 14(12):1734-1740.

[16] ASHMEAD H D.Comparative intestinal absorption and subsequent metabolism of metal amino acid chelates and inorganic metal salts[M]//ASHMEAD H D.The roles of amino acid chelates in animal nutrition.New Jersey:American Academic Press, Noyes Publishers, 1993:47-75.
[17] LEESON S, CASTON L.Using minimal supplements of trace minerals as a method of reducing trace mineral content of poultry manure[J].Animal Feed Science and Technology, 2008, 142(3/4):339-347.