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不同补钙方式对奶牛产后血液钙和其他几种生化指标的影响

DOI: 10.7685/j.issn.1000-2030.2013.02.020, PP. 121-124

Keywords: 硫酸钙,氯化钙,奶牛,低血钙

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Abstract:

为研究补钙方式对产后奶牛血液生化指标的影响,选取2～5胎成年泌乳母牛40头,按照年龄、胎次、分娩时间相近的原则进行配对,随机分为试验组与对照组,每组20头,试验组奶牛产犊后的0及12h分别投喂1粒硫酸钙和氯化钙复合物(含有43g可吸收的Ca2+),对照组在相同时间采用常规补钙(即颈静脉输氯化钙溶液,含氯化钙120g,有效Ca2+含量43g)。在产犊后0、1、6、13和24h时测定奶牛血液生化指标。结果发现在0和1h时,试验组与对照组奶牛血钙浓度基本相近,差异不显著(P>0.05),但1h比0h时有所提高;6h时,试验组血钙水平升高,而对照组出现下降,试验组比对照组提高了25.5%(P<0.01);13h时,试验组血钙水平继续升高,对照组也有所提高,试验组比对照组提高了25.7%(P<0.05);24h时,试验组和对照组血钙均出现下降,试验组奶牛血钙比对照组高20.89%(P<0.01)。其他血液指标如K+、Na+及血酮、血糖浓度和碱性磷酸酶活性均无明显变化。结论硫酸钙和氯化钙复合物比常规输液补充氯化钙更能改善奶牛产后低血钙症状。

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