Multielemental Analysis of Agroindustrial By-Products Employed in Animal Feeding by INAA |
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| Authors: | C M Teruya M J A Armelin J C Silva Filho A G Silva M Saiki |
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| Institution: | (1) Supervisão de Radioquímica, IPEN-CNEN/SP, Caixa Postal 11049-Pinheiros, CEP 05422-970 São Paulo-SP, Brasil;(2) Supervisão de Radioquímica, IPEN-CNEN/SP, Caixa Postal 11049 - Pinheiros, CEP 05422-970 São Paulo-SP, Brasil;(3) Departamento de Zootecnia, da Universidade Federal de Lavras, Caixa Postal 37, CEP 37200-000 Lavras - Minas Gerais-MG, Brasil;(4) Centro de Pesquisa de Pecuária do Sudeste - CPPSE/EMBRAPA, Caixa Postal 339, CEP 13560-970 São Carlos-SP, Brasil |
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| Abstract: | Instrumental neutron activation analysis (INAA) with gamma-ray spectrometry was applied to determine As, Ca, Cd, Cl, Co, Cu, Cr, Fe, Hg, K, Mg, Mn, Mo, Na, Sb, Se and Zn in the Brazilian agroindustrial by-products. These materials are widely used in ruminant feeding. The results obtained were compared with requirement and maximum tolerable concentrations. The general conclusions from the data obtained were: (1) many by-products presented concentrations of some essential elements lower than the requirement concentrations, while in some concentrations of Cr, Fe, Mg and Se exceeded by a little the maximum tolerable concentrations, (2) the elements As, Cd, Hg and Sb, generally considered toxic, showed concentrations lower than maximum tolerable values. |
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