研究简报

饲粮阴阳离子差与奶牛体液酸碱平衡的关联性研究

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  • 贵州大学动物科学学院,贵阳 550025
吴文旋(1979—),男,贵州安顺人,博士,副教授,硕士生导师,主要从事动物营养与饲料学研究。E_mail: wwx3419@126.com

收稿日期: 2011-07-05

  网络出版日期: 2011-12-14

基金资助

国家自然科学基金(30901038);动物营养学国家重点实验室开放课题(2004DA125184F1115);贵州省科学技术基金(黔科合J字[2008]2258);贵州大学引进人才科研项目([2007]002)

The Correlation between Dietary Cation-anion Difference and Acid-base Balance of Body Fluid in Dairy Cows

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  • College of Animal Science, Guizhou University, Guiyang 550025, China

Received date: 2011-07-05

  Online published: 2011-12-14

摘要

本研究旨在分析饲粮阴阳离子差(dietary cation-anion difference,DCAD)与体液酸碱平衡之间的关联性。以3个DCAD水平对围产期奶牛体液酸碱平衡状态(尿液pH、血液pH及血液HCO3-)试验数据为基础,应用SAS统计软件分析。结果表明,DCAD与尿液pH、血液pH及血液HCO3-间存在极显著的相关性(P<0.001);DCAD与尿液pH、血液pH之间存在极显著的回归性(P<0.001),而与血液HCO3-间的回归性不显著(P>0.05);同时,尿液pH与血液pH及血液HCO3-,血液pH与血液HCO3-间存在极显著的相关性(P<0.001)。由此可见,DCAD可影响奶牛体内酸碱平衡状态,尿液pH可用来评价DCAD水平调节围产期奶牛体液酸碱平衡状况的有效指标。

本文引用格式

吴文旋 . 饲粮阴阳离子差与奶牛体液酸碱平衡的关联性研究[J]. 动物营养学报, 2011 , 23(12) : 2198 -2202 . DOI: 10.3969/j.issn.1006-267x.2011.12.023

Abstract

The present study was conducted to evaluate the correlation between dietary cation-anion difference (DCAD) and acid-base balance of body fluid. Data were obtained from 3 trials of DCAD on body fluid acid-base balance (urine pH, blood pH and blood HCO3-) with peripartum dairy cows as the experimental animals and were analyzed using SAS software. The results showed as follows: 1) there was a marked relationship among DCAD, urine pH, blood pH and blood HCO3- concentration (P<0.001); 2) the DCAD strongly regressed with urine and blood pH, respectively (P<0.001), but not with blood HCO3- concentration (P>0.05); 3) there was a significant correlation between urine pH, blood pH and HCO3- concentration (P<0.001), and between blood pH and blood HCO3- concentration (P<0.001). These results suggest that urine pH can be used to evaluate the correlation between DCAD level and acid-base balance of body fluid of peripartum dairy cows.

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