| 不同品种苜蓿营养成分及体外消化率动态研究 |
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| 引用本文： | 张晓庆,吴秋珏,郝正里,魏臻武,李发弟.不同品种苜蓿营养成分及体外消化率动态研究[J].草业科学,2005,22(12):48-51. |
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| 作者姓名： | 张晓庆 吴秋珏 郝正里 魏臻武 李发弟 |
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| 作者单位： | 甘肃农业大学动物科学技术学院,甘肃,兰州,730070;甘肃农业大学草业学院,甘肃,兰州,730070 |
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| 基金项目： | 甘肃省教育厅资助项目，中国-澳大利亚合作项目 |
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| 摘 要： | 用两级离体消化法测定了3个苜蓿Medicago sativa品种4个不同生育期的体外干物质(DM)和有机物质(OM)消化率.结果表明,DM和OM消化率随着生育期的推移极显著(P<0.01)下降.营养期最高,分别为63.56%和59.77%;盛花期仅为47.64%和45.37%.DM和OM消化率与ADF含量均呈强负相关,r分别为-0.800(P<0.01)和-0.814(P<0.01);与CP含量均呈强正相关,r分别为0.706(P=0.05)和0.743(P<0.01).品种对DM和OM消化率无显著影响(P＞0.05).
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| 关 键 词： | 两级离体消化法 苜蓿 消化率 |
| 文章编号： | 1001-0629（2005）12-0048-04 |
| 收稿时间： | 12 8 2004 12:00AM |
| 修稿时间： | 2004-12-08 |
Studies on the dynamic changes of nutrients and in vitro digestibility of different Medicago sativa species |
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| ZHANG Xiao-qing,WU Qiu-jue,HAO Zheng-li,WEI Zhen-wu,LI Fa-di.Studies on the dynamic changes of nutrients and in vitro digestibility of different Medicago sativa species[J].Pratacultural Science,2005,22(12):48-51. |
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| Authors: | ZHANG Xiao-qing WU Qiu-jue HAO Zheng-li WEI Zhen-wu LI Fa-di |
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| Institution: | 1. College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; 2. College of Grassland Science, Gansu Agricultural University, Lanzhou 730070. China |
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| Abstract: | The digestibility of dry matter(DM),organic matter(OM) of M.sativa in three species and at four different growth stages were measured using a two-stage technique for in vitro digestion.The results showed that the digestibility of DM and OM significantly reduced(P<0.01)with extensive growing period:digesbility of DM was 63.56% and OM was 59.77% in vegetative period,while it was(47.64%),45.37% respectively in full blooming.The negative correlation coefficients existed between ADF content and its in vitro digestion of DM and OM,r was-0.800(P<0.01),-0.814(P<0.01);there occurred a positive correclation between CP content and its in vitro digestion of DM and OM,r was 0.706(P=0.05),0.743(P<0.01).Species and the digestibility of DM and OM were not significantly different(P>0.05). |
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| Keywords: | two-stage technique in vitro digestion trial Medicago sativa digestibility |
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