Review on: Bio Active Substance of Legume Forages and Their Feeding Effect on Nutrient Intake, Growth Performance and Nutrient Digestibility of Livestock

In tropics and subtropics livestock production challenged by the many factors and among them, the availability and quality of feed resource is a critical and major cause for such low a production particularly during dry seasons. It is important to advice the livestock producer to overcome the nutritional deficiency phenomena and many researchers has reported that understanding the role legume forage supplementation in livestock production, due to forage legumes are being utilized valuable supplementary sources of protein, energy, minerals and vitamins to the livestock production system. The valuable legume forages are important, however, the forage legume have contained bioactive substance that generated mostly in leguminous feed stuff that either beneficially or determinant effect on livestock performance. On the other hand, the availability of information on bioactive substance and knowledge on feeding practice of livestock are limited. This literature review is focused on bioactive substance that prevailed in legume forages and the feeding effect of these bioactive substances on total Nutrient intake, Growth performance and Digestibility of nutrients by ruminant and mono gastric livestock. Finally in this review also attention was give to beneficial effect of bioactive substance such as role of bioactive substance recycling nutrients, improving microbial efficacy and health aspect were discussed vividly. Keywords: Bioactive substance, Growth performance, Nutrient intake and Nutrient digestibilit