This experiment was conducted to evaluate the availability of amino acids, the metabolizable energy and the metabolic rate of energy of both detoxified and non-detoxified Jatropha curcas kernel meal. Sixty 50-day-old male Avian broilers were allotted to 6 treatments with 10 replicates per treatment and 1 chick per replicate in a completely randomized design. Four kinds of Jatropha curcas kernel meal from different places of origin with different processing methods were used in this study. Diet 1 was basal diet; diet 2 was 85% basal diet+15% Jatropha curcas kernel meal Ⅰ; diet 3 was 85% basal diet+15% Jatropha curcas kernel meal Ⅱ; diet 4 was 85% basal diet+15% Jatropha curcas kernel meal Ⅲ; diet 5 was 85% basal diet+15% Jatropha curcas kernel meal Ⅳ; treatment 6 was fasting to detect the endogenous lost. The experiment lasted for 7 d. The contents of crude protein in the dry matter of the four kinds of Jatropha curcas kernel meal were 66.87%, 56.69%, 56.27%, and 43.07%, respectively; the total energy were 17.83, 18.31, 18.02, and 22.88 MJ/kg, respectively; the apparent metabolizable energy were 11.73, 12.16, 11.93, and 15.23 MJ/kg, respectively; the true metabolizable energy were 14.41, 14.91, 14.64, and 18.66 MJ/kg, respectively. The amino acid patterns were not well balanced for the four kinds of ingredients. The first limiting amino acid was methionine and the second one was lysine in Jatropha curcas meal.［Chinese Journal of Animal Nutrition，2011，23（1）：136-146］