本试验旨在评定玉米皮在生长肉兔上的营养价值。选取32只35日龄体重相近[（760.33±48.29）g]的断奶新西兰白兔，随机等分为4组，每组8个重复，每个重复1只。各组分别饲喂基础饲粮和3种测试饲粮。测试饲粮分别由20%的3种不同来源的玉米皮与80%的基础饲粮混合而成。消化试验共15 d，其中预试期11 d，收粪期4 d。结果表明：1）不同来源对3种玉米皮总能（GE）和主要养分含量均有极显著影响（P<0.01）。3种不同来源玉米皮的GE及粗蛋白质（CP）、粗纤维（CF）、中性洗涤纤维（NDF）、酸性洗涤纤维（ADF）、酸性洗涤木质素（ADL）、粗脂肪（EE）、粗灰分（Ash）、钙（Ca）、总磷（TP）和无氮浸出物（NFE）含量平均值分别为19.84 MJ/kg、10.54%、16.32%、75.32%、20.23%、2.18%、5.54%、1.12%、0.49%、0.05%和66.48%。除半胱氨酸（Cys）、赖氨酸（Lys）和酪氨酸（Tyr）外，不同来源对3种玉米皮的其他氨基酸含量也有显著或极显著影响（P<0.05或P<0.01），3种不同来源玉米皮的精氨酸（Arg）、组氨酸（His）、异亮氨酸（Ile）、亮氨酸（Leu）、Lys、蛋氨酸（Met）、苯丙氨酸（Phe）、苏氨酸（Thr）和缬氨酸（Val）含量平均值分别为0.45%、0.43%、0.37%、1.31%、0.40%、0.12%、0.53%、0.52%和0.58%。2）不同来源对3种玉米皮的GE、DM、CP、ADL、Ca、TP、NFE的表观消化率有极显著影响（P<0.01）。3种不同来源玉米皮的GE、DM、CP、CF、NDF、ADF、ADL、EE、Ash、Ca、TP和NFE表观消化率平均值分别为33.32%、34.01%、70.54%、13.53%、20.07%、10.48%、-0.74%、85.49%、47.42%、29.02%、26.48%和23.81%。除Thr、Val、天冬氨酸（Asp）、甘氨酸（Gly）和丝氨酸（Ser）外，不同来源对3种玉米皮的其余氨基酸的表观消化率均有显著或极显著影响（P<0.05或P<0.01），氨基酸的表观消化率平均值均超过60%。由此可见，对于生长肉兔，玉米皮具有较高的营养价值，但不同来源玉米皮的营养价值有一定差异。

The experiment was carried out to evaluate the nutritional value of corn bran for growing rabbits. Thirty-two New Zealand rabbits at 35 days of age with an average weight of (760.33±48.29) g were randomly divided into 4 groups with 8 replicates in each group and 1 rabbit in each replicate. Rabbits in the 4 group were fed the basal diet and 3 kinds of experimental diets. The experimental diets were formulated by 20% of corn bran from different sources and 80% basal diet. The digestion experiment lasted for 15 days, with 11 days for pre-test period, and 4 days for fecal collection period. The results showed as follows:1) different sources had significant effects on gross energy (GE) and major nutrient contents of 3 kinds of corn bran (P<0.01). The means of GE and crude protein (CP), crude fiber (CF), neutral detergent fiber (NDF), acid detergent fiber (ADF), acid detergent lignin (ADL), ether extract (EE), crude ash (Ash), calcium (Ca), total phosphorus (TP) and nitrogen-free extract (NFE) contents of 3 kinds of corn bran from different sources were 19.84 MJ/kg, 10.54%, 16.32%, 75.32%, 20.23%, 2.18%, 5.54%, 1.12%, 0.49%, 0.05% and 66.48%, respectively. Except for cysteine (Cys), lysine (Lys) and tyrosine (Tyr), different sources had significant effects on other amino acid contents of 3 kinds of corn bran (P<0.05 or P<0.01). The mean contents of arginine (Arg), histidine (His), isoleucine (Ile), leucine (Leu), Lys, methionine (Met), phenylalanine (Phe), threonine (Thr) and valine (Val) of 3 kinds of corn bran from different sources were 0.45%, 0.43%, 0.37%, 1.31%, 0.40%, 0.12%, 0.53%, 0.52% and 0.58%, respectively. 2) Different sources had significant effects on apparent digestibilities of GE, DM, CP, ADL, Ca, TP and NFE of 3 kinds of corn bran (P<0.01). The means of apparent digestibility of GE, DM, CP, CF, NDF, ADF, ADL, EE, Ash, Ca, TP and NFE of 3 kinds of corn bran from different sources were 33.32%, 34.01%, 70.54%, 13.53%, 20.07%, 10.48%, -0.74%, 85.49%, 47.42%, 29.02%, 26.48% and 23.81%. Except for Thr, Val, asparagic acid (Asp), glycine (Gly) and serine (Ser), different sources had significant effects on other amino acid apparent digestibilities of 3 kinds of corn bran (P<0.05 or P<0.01), and the means of apparent digestibility of amino acids were all above 60%. In conclusion, the nutritional value of corn bran is high for growing rabbits, but the nutritional values of corn bran from different sources are different.