Click on a headline below to view the desired abstract. The print version    opens all abstracts at once. Use of by-products with regard to sustainable development Utilization of by-products in animal nutrition - from its beginning up to the white paper of food safety Development of a methodical algorithm for calculation of regional available by-products, exemplarily shown for the Federal State of Saxony Official control of hygienic conditions for preparing by-products of animal origin as feedstuffs Mycotoxins in by-products of cereal processing industry Dioxins in feedingstuffs Heavy metals in by-products of plant and animal origin