Current research indicates that the lysine level suggested by the National Research Council for starter pigs (10 to 20 kg) may be inadequate. Lysine, the first limiting amino acid in most swine rations, is mainly provided by soybean meal in cereal-based diets. With the increasing price of soybean meal, it is important to determine the correct lysine requirement in order to minimize the amount of soybean meal needed in the ration. In low protein diets, lysine has been shown to increase rate of gain and decrease feed/gain in swine.· It also effects carcass characteristics by increasing loin-eye area and total amount of lean, while decreasing fat percentage.
The purpose of this experiment was to determine the effects of varying levels of lysine in starter diets on performance of swine from weaning to slaughter and on the resulting carcass characteristics.
Number of Pages
Agricultural Experiment Station, South Dakota State University
Thaler, R. C.; Wahlstrom, R. C.; and Libal, G. W., "Effect of Lysine in Starter Diets on Performance and Carcass Characteristics of Swine" (1983). South Dakota Swine Field Day Proceedings and Research Reports, 1983. 9.