中度热应激对荷斯坦牛部分血液生化指标的影响

摘要

本研究测定了中国荷斯坦牛分别在中度热应激、无热应激状态下的23个血液生化指标,结果表明:在中度热应激(THI=82.06)状态下,试验牛血液的总蛋白(TP)含量、红细胞数(RBC)、平均血红蛋白(MCH)含量、红细胞压积(HCT)与无热应激组差异显著(P＜0.05)；血清肌酐(CRE)含量、胆固醇(CHO)含量、淀粉酶(AMY)含量、红细胞平均血红蛋白(MCHC)含量、白细胞数(WBC)、碱性磷酸酶(ALP)6项血液生化指标与无热应激组差异极显著(P＜0.01),其余13个生化指标两组间差异不显著.同时对结果进行了分析讨论,希望能为科学防控奶牛热应激提供参考思路和基础数据.%This study measured 23 blood biochemical indexes of Chinese Holstein cows under moderate heat stress state and no heat stress state. While compared with no heat stress state, cows under moderate heat stress showed significant difference in blood total protein(TP) content, the number of red blood cell (RBC), mean corpuscular hemoglobin (MCH) and hematocrit (HCT) (P<0.05), and showed extreme significant difference in serum creatinine(CRE), cholesterol(CHO), amylase(AMY), mean corpuscular hemoglobin concentration(MCHC), white blood cell (WBC) and platelet count (PLT) (P<0.01). There was no statistic difference in the remaining 13 biochemical indexes between moderate heat stress state and no heat stress state. We analyzed and discussed the results and hope to provide elementary data and supports of prevention and control of dairy cow heat stress.