中国农业科学 ›› 2007, Vol. 40 ›› Issue (6): 1248-1253 .

• 畜牧·兽医·资源昆虫 • 上一篇    下一篇

日粮添加植物油籽对乳脂脂肪酸的影响

刘仕军,王加启,卜登攀,魏宏阳,周凌云,雒秋江   

  1. 中国农业科学院北京畜牧兽医研究所/国家动物营养重点实验室
  • 收稿日期:2006-02-17 修回日期:2006-09-22 出版日期:2007-06-10 发布日期:2007-06-10
  • 通讯作者: 王加启

The Effect of Supplementation With Vegetable Oilseed On Bovine Milk-fatty acids

  

  1. 中国农业科学院北京畜牧兽医研究所/国家动物营养重点实验室
  • Received:2006-02-17 Revised:2006-09-22 Online:2007-06-10 Published:2007-06-10

摘要: 【目的】 研究日粮中添加国内广泛种植的几种植物油籽对中国荷斯坦奶牛乳脂脂肪酸组成影响,为改变牛奶脂肪酸组成,提高乳品质寻找合适的途径。【方法】 选用40头泌乳中期(150±25d)、胎次(3±1胎)的中国荷斯坦奶牛,采用完全随机试验(对照组、全脂整粒大豆组、混合油籽组以及全脂膨化大豆组)设计。试验期6周,牛奶样品于试验第4、5和6周采集,利用气相色谱仪分析样品脂肪酸组成。【结果】与对照组相比,日粮添加膨化大豆后乳脂中共轭亚油酸(CLA)含量提高了83.33%(P<0.05)。全脂整粒大豆组、混合油籽组以及全脂膨化大豆组乳脂中月桂酸(C12﹕0)和豆蔻酸(C14﹕0)含量分别比对照组降低了35.73%和35.51%、38.65%和23.83%、24.85%和31.48%。【结论】日粮添加植物油籽可以改变乳脂脂肪酸组成,增加CLA含量,降低月桂酸(C12﹕0)和豆蔻酸(C14﹕0)含量,从而提高乳品质。

关键词: 奶牛, 植物油籽, 共轭亚油酸(CLA), 牛乳脂脂肪酸

Abstract: [Object] This study was conducted to research the effects of dietary supplementation with vegetable oilseeds on bovine milk quality. [Method] Forty Chinese holstein dairy cows were arranged following treatments ( eg. control, and whole full fat soybean, mix-oilseeds with whole cottonseed and soybean and expand soybean, D expand soybean) with a factor completely randomized block, and what change do the fatty acids improve in bovine milk. [Result] CLA percent is the highest in the expand soybean group(P<0.05). The fatty acids content of high inductive cholesterol disease was decreased with oilseeds supplementation(P<0.05).[Conclusion] Bovine milk quality was improved with oilseed supplementation, and △9-desatuase activity is relative to ratio of c9t11CLA and t11C18:1 than others.

Key words: dairy cattle, vegetable oilseed, conjugated linoleic acid, bovine milk-fatty acids