Abstract
Let me state briefly, probably redundantly, the four principal points which I shall elaborate. First, livestock supply us in the United States with a major share of our protein. It is excellent protein and most of us like it in the many forms available from animal sources. Second, much of the world is less adequately supplied with food products of animal origin but would like more of them. Third, the traditional role of livestock in converting milling and other processing offals and roughage into human food provides a solid but limited base for a sustained and substantial role of livestock in food production. Fourth, the efficiency of livestock in converting feed protein to food protein is inherently limited, varies widely with respect to the various animal food products and can be improved. Copyright © 1966. American Society of Animal Science . Copyright 1966 by American Society of Animal Science