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热应激对奶牛血液中内毒素含量和抗氧化指标的影响
引用本文:吴秀群,王立志.热应激对奶牛血液中内毒素含量和抗氧化指标的影响[J].四川畜牧兽医,2011,38(1):22-23.
作者姓名:吴秀群  王立志
作者单位:四川农业大学动物营养研究所,四川,雅安,625014
摘    要:选用16头健康的中国荷斯坦奶牛,随机分为两个处理(夏季组和冬季组),每个处理8个重复,每个重复1头牛。当夏季组奶牛牛舍温湿度指数(THI)〉72的时间连续达到15d,冬季组牛舍THI〈72的时间连续达到15d时,颈静脉采血15mL制备血清,检测血清中内毒素、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)的活性,以及丙二醛(MDA)的含量。结果表明:夏季热应激可导致奶牛血清内毒素、MDA含量极显著升高,SOD和GSH-Px活性极显著和显著(P〈0.05)下降。

关 键 词:奶牛  热应激  内毒素

The effect of heat stress on the endotoxin content and redox in the serum of dairy cattle
WU Xiu-qun,WANG Li-zhi.The effect of heat stress on the endotoxin content and redox in the serum of dairy cattle[J].Sichuan Animal & Veterinary Sciences,2011,38(1):22-23.
Authors:WU Xiu-qun  WANG Li-zhi
Institution:(Animal Nutrition Institute of Sichuan Agricultural University,Sichuan Ya'an 625014,China)
Abstract:16 healthy Holstein cows were divided into the summer group(in August) and winter group(12 months),each treatment with eight repetitions,a cow each repetition.Summer,when the dairy cow-house temperature and humidity index(THI)72 up to 15 consecutive days,winter,when the cow-house THI72 up to 15 consecutive days,15 mL jugular vein blood was taken.Endotoxin level in plasma,Superoxide Dismutase(SOD),total antioxidant activity(TAP),glutathione peroxidase(GSH-Px) activity,and malondialdehyde(MDA) content in plasma were detected.The results show that:in summer,cow plasma endotoxin,MDA content highly increased significantly(P0.01),SOD activity highly decreased significantly(P0.01),TAP and GSH-Px activity decreased significantly(P0.05) in winter.
Keywords:Dairy cattle  Heat stress  Endotoxin
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