肉仔鸡饲料原料代谢能的测定

本试验选用22日龄爱拔益加商品代肉仔鸡192只，随机分为4个处理，每个处理8个重复（公母各4个重复），每个重复6只鸡，分别饲喂以玉米、豆粕、棉粕、菜粕为基础原料配制的4种日粮。收集部分排泄物，测定玉米、豆粕、棉粕、菜粕的AME和AMEn。结果表明：豆粕和棉粕中，公鸡的AMEn显著高于母鸡（p<0.05）；试鸡性别对玉米和菜粕的AME和AMEn无显著影响（p>0.05）；玉米、豆粕、棉粕、菜粕AME和AMEn利用率在公母鸡间差异不显著（p>0.05），公鸡AME和AMEn利用率在数值上有高于母鸡的趋势，但差异不显著（p>0.05）。28日龄肉仔鸡玉米、豆粕、棉粕、菜粕的AME分别是14.82、12.10、11.17、9.79MJ/kg，AMEn分别是14.80、11.81、10.81、9.60MJ/kg。

Determination Metabolizable Energy of Feed Ingredients in Broilers

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.