Opinion of the Economic and Social Committee on the 'Proposal for a Council Directive amending Directive 70/524/EEC concerning additives in feedingstuffs and Directive 95/69/EC laying down the conditions and the arrangements for approving and registering certain establishments and intermediaries operating in the animal feed sector and amending Directive 70/524/EEC, 74/63/EEC, 79/373/EEC and 82/471/EEC'.