World Science and Research PublicationsGlobal Journal of Animal Scientific Research2345-43771120131107Impact of the feed metabolizable energy on protein and amino acids demand of Japanese quails717ENM.RLimaBiodiversity and Forest Institute, Federal University Western Para, Santarem-PA, Brazil. mrlmatheus@gmail.comF.G.P.CostaJ.D.O.BatistaS.S.M.OliveiraS.C.F.Santos20140105The production of Japanese quail has great importance in the production of foods and their nutritional needs are well established, yet still make feed based on recommendations misleading and can reduce the efficiency of production. The nutritional recommendations are presented in different countries and methodological ways to achieve levels, but an important detail is not often considered, the relationship between the nutrients, especially between metabolizable energy and other nutrients. On this basis, it is clear that there is a gap in this direction and this paper will discuss nutritional recommendations, compare levels and simulate diets practices to make an assessment of how best and most efficiently. Based on these data and discussion in this paper, it is concluded that Japanese quails have similar recommendations, but the metabolizable energy: nutrients ratio is different and not be considerate and this can adversely affect production and efficiency of quails.Key words: Amino acids, energy, Japanese quail, requirements