大豆黄酮对热应激奶牛血细胞数和生理常数的影响  

The Effects of Daidzein on the Routine Physical Parameters in Heat-stressed Dairy Cows

作　　者：刘德义[1] 贺绍君[1] 刘世清 唐义国 靳二辉[1] 李升和[1] 顾有方[1] 

机构地区：[1]安徽科技学院,凤阳233100 [2]蚌埠市和平乳业,蚌埠233000

出　　处：《中国奶牛》2013年第1期23-26,共4页China Dairy Cattle

基　　金：安徽省教育厅课题:复方中草药抗奶牛热应激作用及其机制研究[批准号KJ2012A068];蚌埠市科技计划项目:大豆黄酮对奶牛抗热应激能力影响的研究[批准号蚌科字(2010)51];安徽科技学院重点学科建设项目资助(AKXK20101-2)

摘　　要：通过测定热应激状态下奶牛饲喂不同浓度大豆黄酮后血细胞数、体温、脉搏及呼吸数的变化,研究大豆黄酮对奶牛热应激的缓解作用。选取胎次、产奶量、泌乳期相近的40头中国荷斯坦牛,随机均分为4组(n=10)。试验Ⅰ、Ⅱ、Ⅲ组每头牛日粮中分别添加大豆黄酮200mg/d、300mg/d和400mg/d,对照组饲喂基础日粮,试验期60d。在试验开始时及试验第10、30、60天测定各组牛血液常规指标,且记录其体温(T)、脉搏数(P)和呼吸数(R)。结果表明,与对照组比较,试验组红细胞数、白细胞数、血红蛋白含量、体温均无显著变化(P>0.05),试验Ⅱ组、Ⅲ组脉搏数极显著降低(P<0.01);试验Ⅲ组呼吸频率显著降低(P<0.05)。试验证明,大豆黄酮可以通过调节机体代谢发挥抗热应激的作用,进而改善热应激奶牛的心肺功能。Through determining the number of blood cells and the routine physical parameters in daidzein treated heat-stressed dairy cows to explore whether daidzein alleviate heat stress in dairy cattle or not. 40 Holstein cows with the similar parity, milk yield and lactation period were divided into 4 groups, randomly. Group Ⅰ,Ⅱ and Ill were added daidzein 200mg/d, 300mg/d, and 400mg/d last for 60 days, respectively. The control group was only fed the basal diet. At the 0, 10d, 30d, 60d, determination of the routine physical indicators including temperature （T）, pulse rate （P） and respiration rate （R） was performed. Compared with the control group, the red and white blood cells the content of haemoglobin and the temperature in experimental group had no significant changes （P〉 0.05）： The pulse number of group II and III cows decreased significantly （P〈0.01）; Respiration rate in group Ⅱ had a markedly decrease （P〈0.05）. Daidzein can play an important role in alleviating the heat stress in diary cows and thus improve the cardiopulmonary function of the heat-stressed cows.

关 键 词：热应激 大豆黄酮 奶牛 生理常数 

分 类 号：S858.23[农业科学—临床兽医学]