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 ? ci od ? 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.
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.
[6]
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.
[7]
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.