Influence of farm type (organic, conventional and intensive) on toxic metal accumulation in calves in NW Spain

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Title: Influence of farm type (organic, conventional and intensive) on toxic metal accumulation in calves in NW Spain
Authors: Blanco-Penedo, IsabelBenedito, José LuisShore, Richard F.Miranda, MartaGarcía-Vaquero, MarcoLópez-Alonso, Marta
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Date: 27-Aug-2006
Online since: 2021-09-23T10:27:53Z
Abstract: The aim of the present study was to determine how accumulation of toxic metals by beef-cattle in NW Spain varies between farms that have markedly different practices (including intensive, conventional and organic management) and to determine possible key factors affecting toxic metal assimilation by cattle. Soil, feed (forage and concentrate) and animal tissues (liver and kidney from 120 calves) were collected from nine farms across NW Spain and were analysed for metals by ICP-MS. Toxic metal concentrations in beef calves were generally low but did vary significantly between farms. There were no consistent patterns of difference in tissue metal concentrations between farms from different regions or between farms with different management practices. Variations in arsenic, cadmium and mercury concentrations in calf tissues were not significantly explained by soil or diet metal concentrations but were significantly and inversely related to the proportion of concentrate in the ration. Higher levels of metal residues in tissues were associated with consumption of low amounts of concentrate and relatively high levels of grazing. Higher toxic metal intake due to grazing is likely to be largely a result of soil ingestion.
Funding Details: Xunta de Galicia
Type of material: Journal Article
Publisher: Institute of Technology, Estonian University of Life Sciences
Journal: Agronomy Research
Volume: 7
Start page: 578
End page: 578
Keywords: ArsenicMercuryCadmiumLeadFarming practicesCalvesGrazing
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Language: en
Status of Item: Peer reviewed
ISSN: 1406-894X
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Appears in Collections:Agriculture and Food Science Research Collection

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