Products which originate from terrestrial animals are not approved as feedstuffs for ruminants in Germany since March 1994. In consequence of the first BSE-event in Germany (Nov. 24th, 2000) these products as well as fish meal were generally banned as animal feedstuffs (Dec. 2nd, 2000). Since the ban of fish meal was stopped in April 2001 (BMVEL 2001) and feeding to non-ruminants was allowed again it will not be considered in the following chapters.
These changes were the basis for the Society of Nutrition Physiology (GfE) to establish the working group on feed resources at the annual meeting in 2001. It is the major aim of this group to investigate and to evaluate the consequences of the feed ban with special emphasis on availability and economic aspects of alternative feed components. The present paper has to be regarded as the first preliminary report of this group.