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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (2): 39-42.doi: 10.11924/j.issn.1000-6850.2011-1599

所属专题： 畜牧兽医

• 畜牧 动物医学 蚕 蜂 • 上一篇    下一篇

过瘤胃胆碱对泌乳奶牛血液脂质代谢和抗氧化应激的影响

吴文旋   

  • 收稿日期:2011-05-27 修回日期:2011-06-22 出版日期:2012-01-15 发布日期:2012-01-15
  • 基金资助:

    日粮阴阳离子差与钙结合蛋白表达含量关联性及其预防奶牛产乳热的效果研究

Blood lipid profiles and anti-oxidative stress for lactating cows fed rumen-protected choline

  • Received:2011-05-27 Revised:2011-06-22 Online:2012-01-15 Published:2012-01-15

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摘要：

（目的）研究过瘤胃胆碱（RPC）对泌乳奶牛血液脂质代谢和抗氧化应激的影响。（方法）选用10头泌乳盛期奶牛为试验动物，采用自身对照试验设计，持续对照期、试验1期、试验2期共36天，每期12天。RPC的添加水平为每头40g/d。每期采集血液制备血浆，测定其脂质代谢和抗氧化应激指标。（结果）结果表明，与对照期相比，日粮添加RPC对血浆葡萄糖、肌酐、甘油三脂影响不大，差异不显著（P>0.05）；可降低血浆尿素氮水平（P<0.05），增加血浆总胆固醇水平（P<0.05）。血浆总抗氧化能力、超氧化物歧化酶、丙二醛、谷胱甘肽-过氧化物酶水平均不受RPC的影响（P>0.05）。（结论）综上所述，在本试验条件下，RPC有利于改善泌乳盛期奶牛脂质代谢和蛋白质利用效率，而对抗氧化应激影响不大。

关键词: 黄檗, 黄檗, 愈伤组织, 植物激素, 诱导

Abstract:

(objective) This study was conducted to evaluate the blood lipid profiles and anti-oxidative stress for lactating cows fed rumen-protected choline (RPC). (Methods) Ten cows in early lactation were used as the experimental animal with self-pair design. Trial lasted for 3 durations of 12 days including control, trial 1, and trial 2, respectively. Each cow was supplemented with a daily dose of 40g RPC. Blood was collected to harvest plasma for measurements of blood lipid profiles and anti-oxidant stress. (Results) Feeding of RPC did not affect plasma glucose, creatinine, and triglyceride levels (P>0.05). However, plasma urea nitrogen was lower for trial 1 and 2 phases than control (P<0.05); and plasma cholesterol in trial 1 and 2 duration was higher relative to control (P<0.05). Compared with control, plasma concentrations of total anti-oxidative capacity, superoxide dismutase, malondialdehyde, and glutathione peroxidase was not altered for RPC supplementation (P>0.05). (Conclusion) These results indicated that, under the present experimental condition, dietary inclusion of RPC is beneficial for protein utilization and blood lipid metabolism, but not for anti-oxidative stress for peak-lactating dairy cows.