First published in 1980. Animal agriculture serves human needs. Three-fourths of the protein, one-third of the energy, most of the calcium and phosphorus and substantial amounts of essential vitamins and other minerals in the American diet are from animal products. Recognizing that innovative research holds the key to meeting these challenges, 210 concerned individuals convened at Boyne Mountain, Michigan, May 4 to 9, 1980. Their goal was to identify priorities for future research to enable animal agriculture to efficiently and effectively serve human needs in the 21st century. These proceedings represent the best collective judgment on research priorities by a group of informed and dedicated people concerned with the future role of animal agriculture in meeting human needs.