(3)Feed may take the form of feed materials, compound feed, feed additives, premixtures or medicated feedingstuffs. The rules for the marketing of feed additives are set out in Regulation (EC) No 1831/2003 of the European Parliament and of the Council of 22 September 2003 on additives for use in animal nutrition 4 and for medicated feedingstuffs in Council Directive 90/167/EEC of 26 March 1990 laying down the conditions governing the preparation, placing on the market and use of medicated feedingstuffs in the Community 5 .