AS a protein source,insects,depending on the species have an adequate profile of amino. The more frequent limiting amino acids are hos tidine, lysine ,and tryotiohan, which could be incorporated into the diet.It conclusion,insects appear to be a sustainable source of protein with an appealing quantity and quality and acceptable nutritive properties. in conclusion, the use of insects as a sustainable protein rich feed ingredient in diets is technically feasible,and opens new perspectives in animal feeding