Fact Sheet Number
Feed efficiency is typically measured in commercial operations by comparing amount of weight gain of the pigs relative to the amount of feed provided. The energy supplied by the feed is a main factor in producing weight gain. Thus, dietary energy has a large effect on feed efficiency. Also, dietary energy may affect carcass characteristics that are not considered in this fact sheet.
Iowa State University
Euken, Russell M., "Swine Feed Efficiency: Effect of Dietary Energy on Feed Efficiency" (2012). Iowa Pork Industry Center Fact Sheets. 8.