Digestive System Poultry and Glycerol at the Diet of Broiler chickens: Review

Abstract

The search for the maximum feed efficiency has become a concern for poultry producers and researchers. A properly balanced food for an animal is nutritionally complete when: reduces stress, reduces disability, improves immune competence and produces carcass quality, better performance and greater profitability. The factors that lead us to investigate the use of glycerin in animal feed are the environmental concern due to the increasing production of biodiesel. Which leads to an increase of glycerin generated and its large potential energy therefore contains glycerin glycerol into their composition, and that it has high gross energy, making possible the use of crude glycerin as an energy ingredient incorporated into animal feed. The digestive system of poultry comprises the following components: mouth, esophagus, crop, glandular stomach (proventriculus), mechanical stomach (gizzard or ventricle), small intestine (formed by the duodenum, jejunum and ileum), large intestine (cecum, colon and rectum) and cloaca. Observe that the components with the highest participation in glycerin are glycerol, water and lipids. Glycerol is the main component of glycerin, this being highly energy. In broiler diets, the critical level recommended inclusion of glycerol is 10%, and adding values above this recommendation may result in performance degradation and affect the metabolism of triglycerides by inducing biochemical and physiological adaptations