Minerals and potentially toxic elements in corn silage from tropical and subtropical Brazil



Título del documento: Minerals and potentially toxic elements in corn silage from tropical and subtropical Brazil
Revista: Revista Brasileira de Zootecnia
Base de datos: PERIÓDICA
Número de sistema: 000445521
ISSN: 1516-3598
Autores: 1
1
2
2
3
4
5
Instituciones: 1Universidade Federal do Parana, Departamento de Solos e Engenharia Agricola, Curitiba, Parana. Brasil
2University of Nottingham, School of Biosciences, Loughborough, Leicestershire. Reino Unido
3Ministerio da Educacao, Instituto Federal De Educacao, Cienciae Tecnologia do Sudeste de Minas Gerais, Barbacena, Minas Gerais. Brasil
4United States Department of Agriculture, Agricultural Research Service, Auburn, Alabama. Estados Unidos de América
5Universidade Federal do Parana, Departamento de Zootecnia, Curitiba, Parana. Brasil
Año:
Volumen: 49
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, analítico
Resumen en inglés Our aim was to assess the mineral composition of corn silages produced in four states of Brazil: Goiás, Minas Gerais, Paraná, and Santa Catarina. In total, seventy-three samples were analyzed. Total element content was extracted by HNO3 and H2O2 microwave-assisted digestion, and inductively coupled plasma-mass spectrometry (ICP-MS) was used to determine concentration. Of the 31 elements analyzed (Ag, Al, As, B, Ba, Be, Ca, Cd, Co, Cr, Cs, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Pb, Rb, S, Se, Sr, Ti, Tl, U, V, and Zn), 21 had concentrations above equipment detection limits. No elements reached the maximum tolerable concentration, but concentrations of Ca (0.14-0.15%), Cu (3.4-5.6 mg kg−1), P (0.13-0.16%), S (0.06-0.08%), and Zn (13-19 mg kg−1) were below the adequate concentration for good nutritional balance. The strong and consistent correlation observed between Fe and Ti in silage samples indicated contamination by soil. Mean concentrations of Cu, Mn, Mo, P, S, and Zn were different among states, and canonic analyses successfully discriminate samples according to their state of origin. Minerals from corn silage should be considered when formulating balanced cattle diets. To ensure silage quality, farmers must adopt strategies that reduce contamination by soil during the ensiling process
Disciplinas: Medicina veterinaria y zootecnia,
Agrociencias
Palabras clave: Gramíneas,
Nutrición animal,
Medicina veterinaria,
Ensilado,
Toxicidad,
Maíz,
Minerales,
Zea mays
Keyword: Gramineae,
Animal nutrition,
Veterinary medicine,
Silage,
Toxicity,
Corn,
Minerals,
Zea mays
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