饲粮阴阳离子差与奶牛体液酸碱平衡的关联性研究  

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

作　　者：吴文旋[1] 

机构地区：[1]贵州大学动物科学学院,贵阳550025

出　　处：《动物营养学报》2011年第12期2198-2202,共5页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：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)

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HCO 3-)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HCO 3-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HCO 3-间的回归性不显著(P>0.05);同时,尿液pH与血液pH及血液HCO 3-,血液pH与血液HCO 3-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。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 HCO-3） 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 HCO-3 concentration（P0.001）;2） the DCAD strongly regressed with urine and blood pH,respectively（P0.001）,but not with blood HCO-3 concentration（P0.05）;3） there was a significant correlation between urine pH,blood pH and HCO-3 concentration（P0.001）,and between blood pH and blood HCO-3 concentration（P0.001）.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.

关 键 词：饲粮阴阳离子差 体液酸碱平衡 围产期奶牛 

分 类 号：S823[农业科学—畜牧学]