Inedible meat, poultry and fish by-products are major contributors to the profitability of the slaughterers and processors of all types of muscle food. Although the by-products per se make important economic contributions to the productivity of the industries, their importance varies widely between classes and for different species. As important as this may be, the utilization of the otherwise waste by-products has become even more crucial from the standpoint of protecting the environment. Hence, the editors decided that a book dealing with inedible meat, poultry and fish by-products would be...