代谢能MJ/kg粗蛋白g/kg钙g/kg总磷g/kg可利用磷g/kg蛋氨酸%蛋+胱%食盐%11.51653563.30.360.630.37营养需要量代谢能和粗蛋白质含量计算原料比例(%)代谢能(MJ/Kg)粗蛋白质(g/kg)原料中饲粮中原料中饲粮中玉米5214.0614.06×0.52＝7.38686×0.52＝44.72小麦麸26.576.57×0.02＝0.13144144×0.0.02＝2.88米糠1110.9210.92×0.11＝1.2121121×0.11＝13.31DDGS13.393.39×0.01＝0.037575×0.01＝0.75大豆粕2110.2910.29×0.21＝2.16472472×0.21＝99.12菜籽粕17.997.99×0.01＝0.08385385×0.01＝3.85合计8810.9164.63标准11.5165与标准比－0.6-0.37计算矿物质饲料用量原料比例(%)钙（g/kg）总磷（g/kg）可利用磷（g/kg）玉米520.4×0.52＝0.212.1×0.52＝1.091.09×0.3＝0.327小麦麸21.8×0.02＝0.047.8×0.02＝0.160.16×0.3＝0.048米糠111.4×0.11＝0.1510.4×0.11＝1.141.14×0.3＝0.342DDGS11.9×0.01＝0.022.0×0.01＝0.020.02×0.3＝0.006大豆粕213.2×0.21＝0.676.2×0.21＝1.31.3×0.3＝0.39菜籽粕17.9×0.01＝0.089.6×0.01＝0.090.09×0.3＝0.027合计881.173.81.14标准3563.3与标准比－33.83－2.2－2.16设还需要X%的磷酸氢钙，先满祖P的需要，则187*X%=2.2X=1.18在1.18%的磷酸氢钙中还含有Ca,则还需Ca量为231*1.18%=2.73设还需要石粉Y%，则350*Y%=33.83-2.73Y=8.88预留了12%的空间来添加复合预混料、食盐、磷酸氢钙、石粉、L-赖氨酸盐酸盐（含量为98.5%）、DL-蛋氨酸（含量99%）复合预混料规定用量为1%，经计算磷酸氢钙需要1.18%，石粉需要8.88%，据需要量再添加0.4%的食盐，则还剩余0.62%空间计算配方中赖氨酸、蛋氨酸＋胱氨酸含量，补充氨基酸-4原料比例(%)蛋氨酸（%）蛋氨酸+胱氨酸（%）玉米520.14×0.52＝0.0728（0.14+0.17）×0.52＝0.1612小麦麸20.15×0.02＝0.003（0.15+0.23）×0.02＝0.0076米糠110.17×0.11＝0.0187（0.17+0.1）×0.11＝0.0297DDGS10.1×0.01＝0.001（0.1+0.3）×0.01＝0.004大豆粕210.37×0.21＝0.0777（0.37+0.46）×0.21＝0.1743菜籽粕10.86×0.01＝0.0086（0.86+0.93）×0.01＝0.0179合计880.18180.3947标准0.360.63与标准比－0.1782－0.2353经计算，蛋氨酸的含量不足，需要添加DL-蛋氨酸添加量为0.1782÷99%=0.18%这样就还剩余（0.62%-018%=0.44%）0.44%，这部分可以用玉米、小麦麸、大豆粕等原料来补足.饲粮配方及主要营养指标原料配比(%)营养指标含量玉米52代谢能(MJ/Kg)10.9小麦麸2粗蛋白质(%)16.46米糠11钙(%)3.5DDGS1总磷(%)0.6大豆粕21可利用磷(%)0.33菜籽粕1石粉8.88磷酸氢钙1.18食盐0.4蛋氨酸0.18预混料0.44合计100.0