During this century three major trends have characterized the development of the hog slaughter-processing industry in Iowa and in other parts of the nation: Slaughter plants have moved from terminal market locations to hog production areas, new firms have entered the slaughter-processing industry reducing the relative importance of the once dominant big five meat packing firms, and muitispecies slaughtering plants have been replaced by plants specializing in the slaughter of a single species of livestock...
Raikes, Ronald, George Wells Ladd, and John Marvin Skadberg. Conditions and Trends in Hog-Pork Production and Marketing: Marketing Systems and Farm Prices. Department of Economics, Iowa State University, 1976...
Raikes, Ronald; Ladd, George W.; and Skadberg, J. Marvin, "Conditions and Trends in Hog-Pork Production and Marketing: Marketing Systems and Farm Prices" (1976). ISU Economic Report Series. 25.