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At the outset of this study, the range and number of feed materials was specified and agreed. During a period of 2 months, 80 samples weighing 1 kilogram were obtained from UK feed companies. The feeds represented a range of raw materials typically used in the manufacture of compound feeds or fed as single feed materials to farm livestock in the UK.<p>
The feed materials were collected from feed stores on farms, regional and national compounders in a range of sites across England and Wales. Samples were given a unique reference number and stored in sealed containers at approximately 4 C. All feeds were analysed for dry matter and oil. All subsequent analyses were performed on the dry material, although it should be noted that the MPLs for dioxins refer to material corrected for 12% moisture content.
Council Directive 2001/102/EC, amending Directive 1999/29/EC, on undesirable substances and products in animal nutrition established maximum limits for dioxins in feed materials. The Directive also stated that the maximum permitted levels (MPLs) would be reviewed in the light of further data on the presence of dioxins and furans in animal feed.
<p> Find more about this project and other FSA food safety-related projects at the <a href="http://www.food.gov.uk/science/research/" target="_blank">Food Standards Agency Research webpage</a>.