| 摘要: |
| 以凯氏定氮法测定土霉素药渣（TD）的粗蛋白质为444.3 g/kg,用Beckman121型氨基酸分析仪测定TD的18种氨基酸含量（322.58 g/kg）占粗蛋白质含量的72.60％,10种必需氨基酸含量达163.84 g/kg。以90日龄未取盲肠公鸡测定TD中的氨基酸真可利用率在85.07％～96.01％,真可利用赖氨酸，真可利用蛋白氨酸，真可利用苏氨酸含量分别是16.6,9.7,12.7 g/kg，分别是大豆饼（18.8,4.9,12.4 g/kg)含量的0.88,1.98,1.02倍。以蛋鸡和肉仔鸡的理想蛋白质为模型，计算TD的平衡性指数，结果表明TD为家禽的良好蛋白源。 |
| 关键词: 可利用氨基酸 家禽 土霉素药渣 |
| DOI： |
| 分类号: |
| 基金项目:陕西省重大产业科技示范资助项目(96ST07) |
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| Measurements of the available amino acid of TD on poultry feed |
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| Abstract: |
| The crude protein (CP) and amino acid (AA) of terramycin waste residue were determined with Beckman 121 MB-AA-analyzer.CP content of terramycin waste residue is 444.3 g/kg.Ten EAA content is 163.84 g/kg in terramycin waste residue.The content of 18 kinds of AA (322.58 g/kg) amounts to 72.60 percent of CP and it is 1.03 times as much as the ratio of total AA content to total CP in soybean cake.True availablity of ten EAA in terramycin waste residue were determined with intact cockerels and available amino acid were calculated.Available Lys.and available Met.and available Thr.is 0.88,1.98,and 1.02 times as much as the same in soybean cake respectively.The index of amino acid balance were evaluated according to ideal protein of layers and broilers,The results showed the terramycin waste residue is a good protein source for poultry feed. |
| Key words: available amino acid poultry terramycin dregs |
