Abstract: Fifty-six cross bred weaned pigs were allotted to seven different nutritional treatments. The purpose of this experiment was to compare various nontraditional byproduct, cull or waste feeds with conventional or commercial swine rations for rate of growth, efficiency of growth and carcass traits. One treatment was terminated after 38 days because of impaired protein digestion resulting from the presence of a dietary inhibitor. It was concluded that cull peas or extruded cull beans may be used in diets fed to growing pigs as a supplemental protein source without significantly diminishing efficiency or rate of growth. Bakery wastes resulted in less efficient gains (p<0.05), a lighter harvest weight and longer days to market weight. Therefore, bakery waste may be used as a component of the diet as an energy source but supplemental protein would be required to achieve growth performance and feed efficiency similar to that of pigs on the other dietary treatments in the present study. No significant differences due to diets were found for carcass composition, color of lean or color of fat. Cost of the feed in the commercial diet in the present study was more than twice that of the diets which contained nontraditional feedstuffs. This study shows it is not only cost effective, but profitable to use certain cull, waste or byproduct feeds as a component of diets for growing pigs.
E.W. Hawkins , D.K. Lunt , L.E. Orme and N.P. Johnston , 2006. Utilization of Cull Peas, Dry Beans and Bakery Wastes for Feeding Swine. Journal of Animal and Veterinary Advances, 5: 1014-1021.