Observations on the Use of Waste Beef Fat in Swine Rations

Publisher Website
Google Scholar
Abstract
Four experiments involving a total of 73 pigs were conducted to determine the feeding value of raw ground waste beef fat in swine rations. Levels of 10 and IS percent fat were fed successfully in the mixed ration, with the replacement value of the fat averaging 115 percent of corn. Added fat increased the efficiency of gains in all experiments. However, there was no consistent increase in average daily gains. Neither added fat nor B-vitamins showed any clear-cut effect upon dressing percentage, backfat thickness, carcass grades or firmness as measured by Iodine Numbers and manual firmness grades. When the fat was hand fed and the remainder of the ration self fed, the pigs ate 18 percent fat. However, gains were unsatisfactory and the dressing percentage was lower. The carcasses from the pigs which were hand fed fat also had less backfat, more length, and were less firm than those from pigs fed on the other rations. Copyright © . .