This document is one of three publications prepared by the sixty-second meeting of the Joint FAO/WHO Expert Committee on Food Additives, held in Rome in February 2004, and dedicated exclusively to the evaluation of veterinary drug residues in food. The residue monographs in this document provide information on chemical identity, properties, use, pharmacokinetics, metabolism, tissue residues and their depletion, and analytical methods for the substances indicated on the cover. This publication is intended for regulatory authorities, veterinary drug researchers and any other concerned persons who wish to gain information and insights into the assessment of the above-listed information and who are involved in recommending maximum limits for veterinary drug residues in food.