This book discusses up to date the utilization of soybean lecithin in livestock nutrition and its promoting effects on animal productivity, reproductive, quality of animal products and offspring growth. Lecithin can be utilized as a dense energy source for livestock, rich source of antioxidants, semen extenders and cholesterol lowering agent without negative effects on the environment. Lecithin is a good source of poly unsaturated fatty acids and improves the quality of animal products. Lecithin is utilized in feed and pharmaceutical industries and was approved as safe additives for food and feeds, according to a new review by the European Food Safety Authority.