文献类型：期刊文献

中文题名：不同油料籽实对奶牛瘤胃液、血浆脂肪酸组成及乳脂CLA含量的影响

英文题名：Effects of Seeds of Different Oil Plants on Fatty Acid in Ruminal Fluid,Blood Plasma and Milk CLA of Lactating Cows

作者：尹福泉[1];嘎尔迪[2];刘瑞芳[2];于磊[2];卢寿锋[3];齐智利[4]

机构：[1]广东海洋大学农学院,广东湛江524088;[2]内蒙古农业大学动物科技学院,呼和浩特010018;[3]内蒙古鄂尔多斯市东胜区家畜改良站,内蒙古鄂尔多斯017000;[4]华中农业大学动物科技学院,武汉430070

年份：2009

卷号：42

期号：3

起止页码：1039

中文期刊名：中国农业科学

外文期刊名：Scientia Agricultura Sinica

收录：CSTPCD、、Scopus、CSCD2011_2012、北大核心2008、北大核心、CSCD

基金：国家自然科学基金项目(30060061)

语种：中文

中文关键词：共轭亚油酸;油料籽实;瘤胃发酵;奶牛

外文关键词：conjugated linoleic acid; oil plants seed; ruminal fermentation; lactating cows

中文摘要：【目的】研究不同脂肪酸构成的油料籽实对奶牛瘤胃液和血浆中脂肪酸的组成及乳脂CLA含量的影响,初步探讨乳脂CLA合成机制,为改善牛奶脂肪酸构成,提高乳脂中CLA含量寻找合适途径。【方法】以3头装有永久性瘤胃瘘管的经产荷斯坦奶牛为试验动物,采用3×3拉丁方设计,在日粮中添加不同油料籽实(葵花籽、亚麻籽、菜籽),3种日粮的粗脂肪含量基本相同,测定采食后不同时间点瘤胃液、血浆及乳脂中脂肪酸含量。【结果】葵花籽组奶牛乳脂中CLA、t11-C18﹕1、PUFA及LCFA比例均显著高于菜籽组和亚麻籽组(P<0.05);葵花籽组奶牛血浆中t11-C18﹕1的比例显著高于菜籽组和亚麻籽组(P<0.05);瘤胃液中各种脂肪酸含量在3组之间差异不显著(P>0.05),随采食后时间的延长,饱和脂肪酸含量逐渐增加,不饱和脂肪酸含量逐渐减少,不同时间点瘤胃液中CLA的比例均较低;瘤胃液、血浆中的t11-C18﹕1含量对乳脂中CLA含量的决定系数(R2)分别为0.841和0.766。【结论】富含亚油酸的葵花籽在优化奶牛乳脂肪酸构成、提高CLA含量方面效果最好。

外文摘要：[Objective] Three multiparous Chinese Holstein lactating cows with permanent rumen cannula were used to study the effects of adding different kinds of seeds of oil plants on fatty acid in ruminal fluid, blood plasma and milk CLA of lactating cows. [Method] Experimental design used a 3 × 3 Latin square design （sunflower seed group, flax seed group and rape seed group）. [ Result ] The proportion of CLA, t11-C 18 ： 1, PUFA and LCFA in milk fat in sunflowerseed group was significantly improved than that in flaxseed group and rapeseed group when adding different kinds of oil plants seed （sunflower seed, flax seed and rape seed） in the diets （P〈0.05）. The proportion of tl 1-C18：1 in blood plasma in sunflower seed group was significantly improved than that in flax seed group and rape seed group （P〈0.05）. There was an insignificant difference among the averages in three mensuration for all kinds of fatty acids in ruminal fluid after intaking the diets supplied different plant oil （P〉0.05）, but the proportion of the saturation fatty acids gradually increased, and the proportion of unsaturated fatty acids gradually decreased, the proportion of CLA in ruminal fluid was always low in different times. The coefficient of determination of t 11-C 18 ： 1 in ruminal fluid and blood plasma for CLA in milk fat from cows were 0.841and 0.766, respectively.[ Conclusion]The sunflower seed is the best in improving the milk CLA and the composition of fatty acid in lactating cows.