本试验旨在研究不同比例青贮苎麻替代基础饲粮对朗德鹅生长性能、肠道发育、养分表观代谢率及血清生化指标的影响。试验选取健康、体重接近的21日龄朗德鹅360羽，随机分为5个处理，每个处理9个重复，每个重复8只鹅。处理Ⅰ（对照处理）饲喂基础饲粮，试验处理（处理Ⅱ~Ⅴ）分别饲喂用20%、30%、40%和50%青贮苎麻替代基础饲粮的试验饲粮。试验期43 d。结果表明：1）处理Ⅱ~Ⅴ试验鹅的平均日采食量均显著高于处理Ⅰ（P<0.05），处理Ⅲ、Ⅳ、Ⅴ试验鹅的料重比均显著高于处理Ⅰ（P<0.05）；处理Ⅱ试验鹅的平均日增重最高，但各处理间试验鹅的平均日增重无显著差异（P>0.05）。2）各处理间试验鹅的肠道总长度、十二指肠长度、空肠+回肠长度、盲肠长度以及肠道重量均无显著差异（P>0.05）；处理Ⅱ试验鹅的回肠绒毛高度及绒毛高度/隐窝深度值显著高于处理Ⅰ（P<0.05）。3）处理Ⅰ试验鹅的总能和粗蛋白质表观代谢率显著高于其他各处理（P<0.05），处理Ⅰ、Ⅲ试验鹅的粗脂肪表观代谢率显著高于其他各处理（P<0.05），处理Ⅲ、Ⅴ试验鹅的粗纤维表观代谢率显著高于其他各处理（P<0.05）。4）各处理间试验鹅的血清总蛋白、白蛋白、球蛋白、葡萄糖、总胆固醇、尿素含量均无显著差异（P>0.05）。综上所述，在本试验条件下，以生长性能、养分表观代谢率、肠道发育及血清生化指标为评价依据，20%青贮苎麻比例替代基础饲粮饲喂21~64日龄朗德鹅效果最优。

This experiment was conducted to study the effects of different proportions of silage ramie instead of basal diet on growth performance, intestinal development, nutrient apparent metabolic rate and serum biochemical indices of Landes geese. A total of 360 healthy 21-day-old Landes geese with similar body weight were randomly selected and allocated to 5 groups with 9 replicates per group and 8 geese per replicate. Geese in the group Ⅰ (control group) were fed a basal diet, and the others in the test groups (groups Ⅱ to Ⅴ) were fed with the experimental diets which made silage ramie replacing the basal diet according to the proportions of 20%, 30%, 40% and 50%, respectively. The results showed as follows:1) the average daily feed intake of geese of groups Ⅱ to Ⅴ was significantly higher than that of group Ⅰ (P<0.05), and the ratio of feed to gain of geese of groups Ⅲ, Ⅳ and Ⅴ was significantly higher than that of group Ⅰ (P<0.05). In addition, the highest average daily gain of geese was obtained in the group Ⅱ, but there was no significant difference in average daily gain of geese among all groups (P>0.05). 2) There were no significant differences in total intestinal length, duodenal length, jejunum+ileum length, cecum length and intestinal weight of geese among all the groups (P>0.05). In addition, the villus height and villus height/crypt depth in ileum of geese of group Ⅱ were significantly higher than those of group Ⅰ (P<0.05). 3) The apparent metabolic rates of gross energy and crude protein of geese of group Ⅰ were significantly higher than those of other groups (P<0.05), the apparent metabolic rate of ether extract of geese of groups Ⅰ and Ⅲ was significantly higher than that of other groups (P<0.05), the apparent metabolic rate of crude fiber of geese of groups Ⅲ and Ⅴ was significantly higher than that of other groups (P<0.05). 4) There were no significant differences in the contents of total protein, albumin, globulin, glucose, total cholesterol and urea of geese among all groups (P>0.05). To sum up, under these experimental conditions, based on the evaluation of growth performance, nutrient apparent metabolic rate, intestinal development and serum biochemical indices of Landes geese, the results show that silage ramie replacing the basal diet according to the proportion of 20% is appropriate.