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草业学报 ›› 2017, Vol. 26 ›› Issue (5): 197-204.DOI: 10.11686/cyxb2016223

• 研究论文 • 上一篇    下一篇

苎麻营养成分分析及瘤胃降解特性研究

魏金涛1, 2, 杨雪海2, 严念东2, 熊常财3, 汪红武3, 陈芳2, 张乃锋1, 刁其玉1, *   

  1. 1.中国农业科学院饲料研究所,农业部饲料生物技术重点实验室,北京 100081;
    2.湖北省农业科学院畜牧兽医研究所,湖北 武汉 430064;
    3.咸宁市农业科学院,湖北 咸宁 437100
  • 收稿日期:2016-05-27 修回日期:2016-07-06 出版日期:2017-05-20 发布日期:2017-05-20
  • 作者简介:魏金涛(1981-),男,河南灵宝人,副研究员,硕士。E-mail: jintao001@163.com
  • 基金资助:
    公益性行业科研专项(201303143),湖北省农业科技创新中心项目(2016-620-000-001-028)和湖北省农业科学院竞争性项目(2014fcxjh10)资助

Nutritional value of ramie and its ruminal degradability

WEI Jin-Tao1, 2, YANG Xue-Hai2, YAN Nian-Dong2, XIONG Chang-Cai3, WANG Hong-Wu3, CHEN Fang2, ZHANG Nai-Feng1, DIAO Qi-Yu1, *   

  1. 1.Key Laboratory of Feed Biotechnology of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2.Institute of Animal Husbandry and Veterinary Science, Hubei Academy of Agricultural Science, Wuhan 430064, China;
    3.Xianning Academy of Agricultural Sciences, Xianning 437100, China
  • Received:2016-05-27 Revised:2016-07-06 Online:2017-05-20 Published:2017-05-20

摘要: 为系统的研究苎麻的营养价值及其在山羊瘤胃中的降解特性,利用化学分析等方法检测了7个茬次苎麻的粗蛋白(CP)、氨基酸(AA)组成、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)等营养成分、单宁等抗营养成分的含量,并采用3只装有永久瘤胃瘘管的波尔山羊为试验动物,对苎麻的部分营养成分的降解率和降解参数进行测定。结果表明,7个茬次苎麻的CP含量均较高且品质较好,CP平均值达到了19.57%,而且呈现出随着茬次的增加,CP含量有所下降的趋势,但是第7茬和第6茬相比CP含量略有升高。AA总和平均值达到了16.40%,占CP平均值含量的83.80%,赖氨酸(Lys)的平均含量达到了0.84%,苏氨酸(Thr)的平均含量达到了0.82%。抗营养因子方面,单宁可能是苎麻最主要的抗营养因子,平均值达到了0.67%。苎麻的干物质(DM)、CP、有机物(OM)、NDF和ADF的降解率均随着瘤胃消化时间的延长而不断提高,有效降解率分别达到了47.00%,35.53%,44.29%,57.68%和38.59%。由此得出,苎麻的营养价值较高,主要体现在CP含量高且品质较好,主要营养成分的瘤胃降解率均较高,可以作为反刍动物优良的粗饲料资源加以开发利用。

Abstract: The aim of this study was to investigate the nutrient components and ruminal degradability characteristics of ramie. Common nutrition components, amino acids composition, and anti-nutrient (e.g., tannin) contents were determined for seven ramie samples containing different proportions of stubble, and the ruminal degradability was estimated using three male Boer goats fitted with permanent rumen fistula. The average crude protein (CP) content of the seven stubble samples was 19.57%. The CP content decreased with increasing proportions of stubble, but the CP content in sample 7, which had the highest proportion of stubble, was slightly higher than that in sample 6, which had a slightly lower proportion of stubble. The average total amino acids content was 16.40%, accounting for 83.80% of CP. The average Lys and Thr contents were 0.84% and 0.82%, respectively. The average content of tannin, the main anti-nutrient in ramie, was 0.67%. The ruminal degradability of ramie dry matter, CP, organic matter, neutral detergent fiber, and acid detergent fiber increased with longer digestion time; the effective degradability of these nutrients was 47.00%, 35.53%, 44.29%, 57.68% and 38.59%, respectively. In conclusion, ramie has a high protein content, high-quality CP, and high rumianl degradability of some nutrients. Therefore, it is a good forage for ruminants.

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