| 我国北方地区奶牛常用饲料蛋白质组分及其降解规律的研究 |
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| 引用本文： | 张民,桂荣,王加启.我国北方地区奶牛常用饲料蛋白质组分及其降解规律的研究[J].中国饲料,2005(14):8-10. |
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| 作者姓名： | 张民 桂荣 王加启 |
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| 作者单位： | 1. 中国农业科学院草原研究所,北京市海淀区圆明园西路2号,100094
2. 中国农业科学院畜牧研究所,北京市海淀区圆明园西路2号,100094 |
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| 摘 要： | 本试验研究以NRC(2001)奶牛营养需要(第7版)采用的对粗蛋白质组分的分析方法为基础,对奶牛养殖中常用的部分饲料原料进行取样分析,利用尼龙袋法测定出这些常用饲料原料的各种蛋白质组分(A、B、C)和B组分的降解速率。结果表明,粗饲料的粗蛋白质中A组分和C组分的比例较高,A组分变异较大;B组分的比例相对较小,在瘤胃中的降解速率较低。精料的粗蛋白质中B组分的含量较高,而C组分的含量较低。因而,精料是反刍动物瘤胃降解蛋白质(RDP)和瘤胃非降解蛋白质(RUP)的主要来源。
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| 关 键 词： | 奶牛 蛋白质组分 降解规律 |
| 文章编号： | 1004-3314(2005)14-0008-04 |
Study on protein component and degradation regulation in traditional dairy feeds in north-China |
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| Zhang Min Gui Rong et al..Study on protein component and degradation regulation in traditional dairy feeds in north-China[J].China Feed,2005(14):8-10. |
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| Authors: | Zhang Min Gui Rong |
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| Institution: | Zhang Min Gui Rong et al. |
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| Abstract: | The fractions(A,B,C)of feeds protein and degradation rate of fraction B in rumen of dairy cows were determined by in situ in this study based on the method in Nutrient Requirements of Dairy Cattle(NRC,2001).The result showed that proportions of fraction A and C in forages were higer than that of fraction B and the variation of fraction A was large.For concentrate,but the proportion of fraction B was large,but proportion of fraction C was very small.It was concluded that concentrate is the main source of rumen degradable protein(RDP) and rumen undegradable protein(RUP)for ruminant. |
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| Keywords: | dairy cow feed protein fractions degradation law |
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