In 1978, the Committee on Animal Nutrition (CAN) of the NationalResearch Council (NRC) convened a task force of scientists to examine theavailable literature on the feeding of "exotic" or underutilized feed-stuffs tofood-producing animals and to recommend to the CAN whether a report on thesubject would be warranted. Subsequently, a CAN Subcommittee on FeedingUnderutilized Feedstuffs to Animals was appointed to include expertise inanimal nutrition, animal waste recycling, food science and technology, cropresidues, feedstuffs from wood, and biochemical engineering.The subcommittee met on September 6-7, 1978, in Washington, D.C.;December 3-5, 1979, in Chicago, Illinois; and June 17-19, 1980, at the NASSummer Studies Center, Woods Hole, Massachusetts.This report was written by the CAN Subcommittee on Feeding UnderutilizedFeedstuffs to Animals, each chapter being prepared by one or twomembers of the subcommittee; however, the entire document has beenapproved by all members.During the preparation of its report, the subcommittee received valuableassistance from Robert C. Albin; W. Brady Anthony; Dudley D. Culley, Jr.;Charles C. Dunlap; Marcel Faber; D. M. Graham; James F. Hentges, Jr.; L. D.Kamstra; John H. Litchfield; C. Reed Richardson; Lewis W. Smith; Jack C.Taylor; Peter J. Van Soest; Howard G. Walker; and R. J. Young.