Abstract: 192 22-day-old AA broilers were randomly assigned into 4 treatments, with 8 replicates each treatment (4 replicates for male and female broilers respectively). Four diets were prepared based on corn, soybean meal, cottonseed meal and rapeseed meal. AME and AMEn of corn, soybean meal, cottonseed meal and rapeseed meal were evaluated by collecting parts of excreta. The results were as follows: AMEn of male broiler was greater than that of female broiler in soybean meal and cottonseed meal (p<0.05). Sex of broilers had no significant effects on AME and AMEn in corn and rapeseed meal (p>0.05). The utilizable efficiency of AME and AMEn of male broiler were greater than that of female broiler in corn, soybean meal, cottonseed meal and rapeseed meal (p>0.05). AME of corn, soybean meal, cottonseed meal and rapeseed meal were 14.82, 12.10, 11.17, 9.79MJ/kg, and AMEn were 14.80, 11.81, 10.81, 9.60MJ/kg respectively.