基于多元统计学的产后真胃左方变位奶牛血液生化指标变化规律研究

Study on change of blood biochemistry indicators in postpartum cows with left displaced abomasum based on the multivariate analysis

为了研究产后左方真胃变位奶牛血液生化指标的变化规律,探讨该病可能的发病机制,试验采用多元统计学方法对产后真胃左方变位(LDA)奶牛血液生化轮廓、差异生化指标及其诊断能力进行了研究。结果表明:产后真胃左方变位奶牛和健康奶牛血液生化轮廓存在明显差异,酮体(KB)、总胆固醇(TC)、葡萄糖(Glu)和天门冬氨酸氨基转移酶(AST)是导致血液生化轮廓差异的主要指标(P<0.01),聚类结果进一步表明这4个指标对真胃左方变位具有良好的诊断能力。说明奶牛产后真胃左方变位与能量负平衡密切相关,血液酮体、总胆固醇、葡萄糖和天门冬氨酸氨基转移酶可以作为判断产后奶牛真胃左方变位的辅助性生化指标。

To explore the change trend of blood biochemical indicators and the probable pathogenesis of left displaced abomasum(LDA),the profile of blood biochemical indicators,the discriminative biochemical indicators and their diagnosis ability to LDA were studied using multivariate analysis.The results showed that there was a significant difference in the profile of blood biochemical indicators between LDA and healthy postpartum cows,and ketone body(KB),total cholesterol(TC),glucose(Glu)and aspartic acid transferase(AST)were the main indicators of blood biochemical profile differences(P<0.01).The result of clustering further shows thatKB,TC,Glu and AST had excellent diagnosis ability for LDA.In conclusion,LDA is associated with the negative energy and the blood KB、TC、Glu and AST can be used as auxiliary biochemical indexes to determine the left displacement of postpartum cows.