›› 2011, Vol. 38 ›› Issue (6): 123-125.

• 遗传繁育 • 上一篇    下一篇

九龙藏黄牛乳蛋白的组成及遗传多态性研究

李玉萍1,2, 卢帮敏1, 金素钰1, 汤富彬2, 林亚秋1, 刘征鑫1, 郑玉才1   

  1. 1. 西南民族大学生命科学与技术学院,四川成都 610041;2. 四川省九龙县农牧局,四川九龙 622000
  • 收稿日期:2010-12-01 修回日期:1900-01-01 出版日期:2011-06-20 发布日期:2011-06-20
  • 通讯作者: 郑玉才

Milk Composition and Protein Genetic Polymorphisms of Jiulong Tibetan Yellow Cattle

LI Yu-ping1,2, LU Bang-min1, JIN Su-yu1, TANG Fu-bin2, LIN Ya-qiu1, LIU Zheng-xin1, ZHENG Yu-cai1   

  1. 1. College of Life Science and Technology,Southwest University for Nationalities,Chengdu 610041,China;2. Animal Husbandry Bureau of Jiulong County,Jiulong 622000,China
  • Received:2010-12-01 Revised:1900-01-01 Online:2011-06-20 Published:2011-06-20

摘要: 本研究旨在了解生活在高海拔地区的藏黄牛乳的生化组成特点。试验测定了43头九龙藏黄牛乳蛋白含量、乳蛋白组成和酪蛋白多态性。藏黄牛乳蛋白含量低,仅约为29 g/L;电泳分析结果显示,脱脂乳蛋白组成与普通牛乳接近,主要包括酪蛋白、α-乳清蛋白和β-乳球蛋白等组分,β-Lg与α-La含量的比值低于牦牛;酪蛋白的相对含量约为70%,主要包含αs-CN和β-CN,二者分别检测到3和2种基因型。研究结果表明,九龙藏黄牛乳的组成与生活在类似生态环境中的九龙牦牛存在差异。

关键词: 藏黄牛; 乳; 遗传多态性; 低氧

Abstract: The objective of present study was to reveal the biochemical characteristics of milk from Tibetan Yellow cattle at highlant,milk protein composition and casein polymorphisms. Tibetan Yellow cattle contains low protein content in minds. A total of 43 Tibetan Yellow cattle at Jiulong county of Sichuan province were used to assay milk protein contelk (only about 29 g/L);skim milk protein composition was similar to that of cow as revealed by electrophoresis. Main milk protein components include casein,α-lactalbumin,and β-lactoglobulin. The ratio of milk β-Lg to α-La content was lower that that of yak. The relative percentage of casein was approximately 70%,including αs-casein and β-casein. Three and two genotypes of αs-casein and β-casein were detected,respectively. Our results indicated that there was difference in milk composition between Jiulong Titetan Yellow cattle and Jiulong yaks that live in similar ecological environment.

Key words: Tibetan Yellow cattle; milk; genetic polymorphism; hypoxia

中图分类号: