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饲粮阴阳离子差与奶牛体液酸碱平衡的关联性研究

DOI: 10.3969/j.issn.1006-267x.2011.12.023

Keywords: 饲粮阴阳离子差,体液酸碱平衡,围产期奶牛

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Abstract:

本研究旨在分析饲粮阴阳离子差(dietarycation-aniondifference,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。

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