This handbook reports methods of animal by-product processing and highlights recent innovations in the field with respect to energy conservation, product upgrading, and waste reduction, utilization, and disposal. It provides information on quanti- ties of by-products available, their chemical and histological properties, on alternative processing techniques, associated equipment and energy requirements. By-products from the meat, poultry, and sea-food processing industries are covered. In their discussion of processing techniques, the authors in- clude equipment, energy, water, labor, and chemicals needed. Numerous tables, illustrations as well as comprehensive re- ference lists help the reader to get easy access to the infor- mation needed by people working in the field.