The fifth edition is cited in Resources for College Libraries. This sixth-edition reference is aimed at animal nutritionists, veterinarians, and other scientists, in addition to horse owners, manager, teachers, and students. Published by the Board of Agriculture and Natural Resources of the National Academies, it reviews scientific literature on the nutrition and feeding of horses and summarizes information on the nutrient requirements of horses of different physiological classes. Information on feeds, feed processing, and feeding behavior is presented. The book is accompanied by a web-based computer program that calculates requirements. This edition contains updated information on the composition of feeds, feed additives, and other compounds, as well as several nutritional and metabolic diseases and some revised requirements. Discussion of the nutrition and feeding of donkeys, mules, and captive equids is included. Annotation ©2007 Book News, Inc., Portland, OR (booknews.com)