Omidi Arash, Fathi Mohammad Hasan, Parker Matthew O
Department of Animal Health Management,School of Veterinary Medicine, Shiraz University,Shiraz,Iran.
Department of Animal Sciences, Agriculture Faculty,University of Birjand,Birjand,Iran.
J Dairy Res. 2017 Feb;84(1):49-53. doi: 10.1017/S0022029916000753. Epub 2016 Dec 23.
The purpose of the study reported in this Research Communication was to evaluate alterations in concentration of total antioxidant capacity (TAC) of plasma, plasma total thiols as markers of oxidative protein damage and malondialdehyde (as a final product of lipid peroxidation) in samples obtained at different stages of the lactation cycle and dry period of dairy cows. We found that TAC was significantly lower in the primiparous cows compared to multiparous cows. This study clearly demonstrates a need for monitoring primiparous cows during the production cycle, especially when they are faced with severe metabolic conditions. Furthermore, TAC may be a sensitive, reliable and useful indicator for measurement of cumulative effects of antioxidants as an addition to metabolic profile tests, which are currently used to analyse dairy cattle health.
本研究通讯中报告的这项研究的目的是评估在奶牛泌乳周期和干奶期的不同阶段采集的样本中，血浆总抗氧化能力（TAC）、作为氧化蛋白质损伤标志物的血浆总硫醇以及丙二醛（脂质过氧化的最终产物）浓度的变化。我们发现，初产奶牛的TAC显著低于经产奶牛。这项研究清楚地表明，在生产周期中需要监测初产奶牛，尤其是当它们面临严重代谢状况时。此外，TAC可能是一种敏感、可靠且有用的指标，可作为代谢谱测试的补充，用于测量抗氧化剂的累积效应，目前代谢谱测试用于分析奶牛健康状况。
