| 西藏栽培牧草中氨基酸组成特点的研究 |
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| 引用本文： | 姜文清,周志宇,秦彧,王楠,王桃,李晓忠,田发益.西藏栽培牧草中氨基酸组成特点的研究[J].草业学报,2010,19(5):148-155. |
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| 作者姓名： | 姜文清 周志宇 秦彧 王楠 王桃 李晓忠 田发益 |
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| 作者单位： | 1.兰州大学草地农业科技学院,甘肃 兰州 730020;2.西藏自治区农业科学院,西藏 拉萨 850000;3.西藏农牧学院,西藏 林芝 860000 |
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| 基金项目： | 国家重点基础研究发展规划项目(973项目)，国家科技支撑计划资助项目，国家自然科学基金项目 |
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| 摘 要： | 本试验对西藏57种栽培牧草氨基酸总量、必需氨基酸、含硫氨基酸以及限制性氨基酸的组成特点进行了分析。结果表明,牧草中氨基酸总量为6.11%～23.71%,各科牧草氨基酸总量顺序是豆科>藜科>禾本科。其中必需氨基酸含量平均为6.42%,必需氨基酸含量占氨基酸总量比值最高的是豆科牧草,最低的则是禾本科牧草;含硫氨基酸含量为0.44%～1.63%,不同品种间差异较大;牧草限制性氨基酸含量较高,为0.63%～2.25%。同时满足EAA/NEAA>60%,EAA/TAA>40%的牧草共有47种,占栽培牧草总数的82%。研究表明西藏栽培牧草氨基酸组成合理,营养价值较高,是当地家畜优质的饲草来源。
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| 关 键 词： | 西藏 栽培牧草 氨基酸 组成特点 |
| 收稿时间： | 1900-01-01; |
Characteristics of amino acid constituents of cultivated forages in Tibet province |
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| JIANG Wen-qing,ZHOU Zhi-yu,QIN Yu,WANG Nan,WANG Tao,LI Xiao-zhong,TIAN Fa-yi.Characteristics of amino acid constituents of cultivated forages in Tibet province[J].Acta Prataculturae Sinica,2010,19(5):148-155. |
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| Authors: | JIANG Wen-qing ZHOU Zhi-yu QIN Yu WANG Nan WANG Tao LI Xiao-zhong TIAN Fa-yi |
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| Institution: | 1.College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China; 2.Tibet Autonomous Regional Academy of Agricultural Sciences, Lhasa 850000, China; 3.Tibetan Agriculture and Animal Husbandry College, Linzhi 860000, China |
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| Abstract: | The characteristics of total amino acid (TAA), essential amino acids (EAA), sulfur amino acid, and limited amino acid of 57 cultivated forages in Tibet were studied. The TAA content ranged from 6.11% to 23.71% and declined in the sequence Leguminosae>Chenopodiaceae>Gramineae. The average content of EAA was 6.42% and the highest and the lowest ratios of EAA to TAA content were in the Leguminosae and Gramineae, respectively. The sulfur amino acid content ranged from 0.44% to 1.63%, and varied greatly between species. There was also a high ratio of limited amino acid content, which ranged from 0.63% to 2.25%. There were 47 species, accounting for 82% of all the forages, with ratios of EAA/NEAA>60% and of EAA/TAA>40%. This showed that there was a reasonable constitutive ratio of amino acid and high nutritive value in the cultivated forages, which were therefore excellent feed resources for local livestock. |
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