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当前位置: 首页 > 文章 > 牦牛种间杂交后代乳脂肪酸含量比较 食品科学 2008,29 (8) 478-481
Position: Home > Articles > Comparison of Fatty Acids Contents in Milk of Yaks of Interspecific Hybridization Generation FOOD SCIENCE 2008,29 (8) 478-481

牦牛种间杂交后代乳脂肪酸含量比较

作  者：
杨明;陈雪梅;文勇立;王建文;傅昌秀;吴贤智;张金灵
单  位：
四川省畜禽改良指导总站;四川省红原县畜牧兽医局;西南民族大学生命科学与技术学院;四川省畜牧科学研究院
关键词：
杂种牛;乳;脂肪酸;气相色谱-质谱
摘  要：
分析了西门塔尔×藏黄牛×牦牛、荷斯坦奶牛×藏黄牛×牦牛、荷斯坦牛×牦牛、娟姗×牦牛四种杂种牛乳脂肪酸组成特点。样品提取脂肪后进行甲酯化,用气相色谱-质谱联用(GC-MS)法测定脂肪酸组成。结果表明:四个品种之间,除十一酸、月桂酸等8种脂肪酸外的其它18种脂肪酸在品种间均有差异(p<0.05);不饱和脂肪酸的含量差别较大,从42.20%～50.22%不等,西门塔尔×藏黄牛×牦牛不饱和脂肪酸的含量(50.22%)显著高于娟姗×牦牛(42.20%),多不饱和脂肪酸在品种间差异显著,荷斯坦牛×牦牛含量最高,为30.53%,MUFA/PUFA为0.61:1。可见,荷斯坦牛×牦牛乳脂肪酸营养价值高,这对乳品开发和牦牛品种改良具有重要意义。
译  名：
Comparison of Fatty Acids Contents in Milk of Yaks of Interspecific Hybridization Generation
作  者：
YANG Ming1,CHEN Xue-mei1,WEN Yong-li1,,WANG Jan-wen2,FU Chang-xiu2,WU Xian-zhi3,ZHANG Jin-ling4(1.College of Life Science and Technology,Southwest University for Nationalities,Chengdu 610041,China;2.Sichuan Provincial Head Station for Breeding and Improvement of Animal and Poultry,Chengdu 610041,China;3.Sichuan Province Hengyuan County Animal Husbandry and Veterinary Medicine Bureau,Hongyuan 624400,China;4.Animal Science Research Academy of Sichuan Province,Chengdu 610066,China)
关键词：
crossbred cattle;milk;fatty acid;GC-MS
摘  要：
Fatty acids compositions in milk of four kinds of crossbred yaks,such as Simmental × Tibetan cattle × yak,Holstein cows × Tibetan cattle × yak,Holstein cows ×yak,Juanshan cattle × yak were analyzed. After being extracted from milk samples,methyl esterification of fatty acids was carried out,and then their compositions were analyzed using GC-MS. Results demonstrated that 18 varieties fatty acids show significant difference with different yak varieties except hendecanoic acid lauric acid(p<0.05). There is great difference among contents of unsaturated fatty acids in milk of different varieties yaks,ranging from 42.20% to 50.22%. The content of unsaturated fatty acid in milk of Simmental × Tibetan cattle × yak(50.22%) is obviously higher than that of unsaturated fatty acid in milk of Juanshan cattle × yak(42.20%). Significant difference among contents of polyunsaturated fatty acids exists with different yak varieties,and the highest is in milk of Holstein cows ×yak(30.53%) with ratio of MUFA/PUFA 0.61:1. The results indicated that milk of Holstein cows × yak has high nutritional value,which has the important meaning to dairy products development of yak and breeding of cattle.

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