OPINION of the Economic and Social Committee on the Proposal for a Council Directive on the Circulation of Feed Materials amending Directives 70/524/EEC, 74/63/EEC, 80/511/EEC, 82/471/EEC, 82/475/EEC, 91/357/EEC, 91/516/EEC, 92/87/EEC and 93/74/EEC as well as repealing Directive 77/101/EEC.