The aim of the present study was to evaluate the effect of metabolizable energy, lysine and methionine + cysteine level on the performance of breeder quail, hatching eggs and performance of offspring. For this purpose, 630 Japanese quails (46-day old) randomly distributed (14 birds per cage) between 9 exprimental treatment with 5 replicates per treatment. Also, at 66 days old, 225 male Japanese quail were randomly assigned to 45 cages (5 birds per cage). The dietary treatments included three different energy levels (2700,2850 and 3000 kcal per kg), 3 different levels of lysine (0.88, 1.00 and 1.12 percent) and 3 different levels of methionine + cysteine (0.65, 0.75 and 0.85 percent) were fed to the japanees qouil of 9 weeks old. An orthogonal array layout of L9 (3 3 ) was chosen based on Taguchi method using minitab software. The egg production and average egg weight were recorded daily. Feed intake was measured on a weekly basis. All records, including the egg production, feed intake, egg weight, egg production efficiency and feed conversion ratio were analysed on a weekly basis. . The proper eggs for hatching were collected at the seventh, eighth and ninth weeks of experiment and were transferred to the incubator weekly. At the end of the incubation period, hatchability and average weight of day old chicks were measured. The first hatched chicks group were grown under a standard condithion with the same diet for 12 days. At days 12 of rearing period, average daily gain and feed intake were recorded for each 9 groups and feed conversion ratio was calculated.Results showed that in the first period of experiment, (week 7-10), the first level of energy had the highest egg production. Feed intake decreased with increasing levels of energy. The best feed conversion ratio between the energy levels in the first, second and third weeks belong to level 1, 3 and 3 respectively. The second level of lysine at this section, had the highest feed intake and egg production, but the best feed conversion ratio belong to birds fed with third level of lysine. In the first period between levels of methionine + cysteine, the first level had highest egg production, heaviest egg and the best feed conversion ratio. In the second period of experiment, the third level of energy had the highest egg production, the heaviest egg, the lowest feed intake and feed conversion ratio was the best. Also, the third level of lysine as well as in terms of increasing the egg production, feed conversion ratio was the best. The egg production and egg weight increased with increasing levels of methionine + cysteine at this period, and third level had the best feed conversion ratio. In the third period of experiment, the third level of energy had highest egg production, highest egg production efficiency and the best feed conversion ratio. The third level of lysine had the highest egg production efficiency and the best feed conversion ratio. At this period, third level of methionine + cysteine had highest egg production, heaviest egg and best feed conversion ratio. The hatch results showed that highest hatchability associated to third level of energy, second level of lysine and first level of methionine + cysteine. The heaviest weight of day old chicks belong to the third levels of energy, lysine and methionine + cysteine. The results which obtained from offspring showed that the best combination refered to the third levels of energy, and lysine and the second and third level of methionine + cysteine which had the highest daily gain and best feed conversion ratio. Generally, the results of this study indicated that the third level of energy, the third level of lysine and the first level of methionine + cysteine resulted in the optimum performance in the first experimental period (7-10week). The dietary including the third levels of energy, lysine and methionine + cysteine resulted in the best performance during second and third experimental periods. Keywords: Quail, Metabolizable energy, Lysine, Methionine + Cysteine,