›› 2007, Vol. 34 ›› Issue (7): 5-10.

• 动物营养与饲料科学 •    下一篇

日粮阴阳离子差对奶牛的影响及其在生产实践中的应用研究进展

贾磊1,2，王加启2，卜登攀2，张辉1
   

  1. 1．青海大学农牧学院，西宁 810003； 2．中国农业科学院北京畜牧兽医研究所动物营养学国家重点实验室， 北京 100094
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-07-20 发布日期:2007-07-20

The Research Advance of Effects of Dietary Cation-Anion Difference (DCAD) on Dairy Cows and the Application of DCAD to Practice

JIA Lei1,2, WANG Jiaqi2, BU Dengpan2, ZHANG Hui1
   

  1. 1.College of Agriculture and Animal Husbandry, Qinghai University, Xining 810003, China; 2.Institute of Animal Science, Chinese Academy of Agricultural Science State Key Laboratory of Animal Nutrition, Beijing 10094, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-07-20 Published:2007-07-20

摘要： 阴阳离子差(DCAD)是指日粮中每千克或每百克干物质所含的主要阳离子（Na+、K+、Ca2+、Mg2+）毫摩尔数与主要阴离子（Cl-、S2-、PO3-4）毫摩尔数之差。DCAD直接影响奶牛血液的酸碱平衡及酶系统等的功能，可以改善奶牛的健康状况、提高奶牛生产性能。在此，作者综述了国内外关于调节日粮阴阳离子差对奶牛影响的研究结果及现状，探讨了DCAD在奶牛不同阶段生产实践中的应用。

关键词: 阴阳离子差; 奶牛; 生产性能; 健康

Abstract: Dietary Cation-Anion Difference (DCAD) is defined as the sum milliequivalents of (Na+K)-(Cl+S) per kilogram or per hundred gram of dry matter. DCAD has straight effects on blood acidbase balance and enzyme system's function of dairy cows, and it can improve on the dairy cows' health status and increase the milk performance. This report summarized the study result and current actuality about altering DCAD has effect on dairy cows, and discussed DCAD's application on practice in dairy cows' different period. 

Key words: Dietary CationAnion Difference (DCAD); dairy cow; milk performance; health

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