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| 日粮添加亚油酸和二十二碳六烯酸对奶牛瘤胃原虫奇数碳链脂肪酸和支链脂肪酸的影响 | |
| 引用本文： | 王蕾,王加启,李发弟,刘仕军,哈斯,梁松.日粮添加亚油酸和二十二碳六烯酸对奶牛瘤胃原虫奇数碳链脂肪酸和支链脂肪酸的影响[J].甘肃农业大学学报,2010,45(1). |
| 作者姓名： | 王蕾 王加启 李发弟 刘仕军 哈斯 梁松 |
| 作者单位： | 1. 甘肃农业大学动物科学技术学院,甘肃,兰州,730070;中国农业科学院北京畜牧兽医研究所,动物营养学国家重点实验室,北京,100193 2. 甘肃农业大学动物科学技术学院,甘肃,兰州,730070 3. 中国农业科学院北京畜牧兽医研究所,动物营养学国家重点实验室,北京,100193 |
| 基金项目： | “十一五”奶业国家科技支撑计划(2006BAD04A03,2006BAD12B08);;公益性行业科研专项(Nzx07.036) |
| 摘 要： | 试验选取4头安装有永久性瘤胃、十二指肠和回肠瘘管的荷斯坦泌乳奶牛,采用4×4拉丁方试验设计,研究日粮中添加亚油酸(LA)和二十二碳六烯酸(DHA)对瘤胃原虫中奇数碳链脂肪酸和支链脂肪酸的影响.试验结果表明:奇数碳链脂肪酸和支链脂肪酸(OBCFA)是原虫脂肪酸的重要组成部分,与对照组相比,日粮中单独添加LA或DHA对瘤胃原虫中主要OBCFA的含量无显著影响,而当LA和DHA协同添加时C15∶0和C17∶0的含量显著降低(P0.05),但对异构酸和反异构酸的含量无显著影响. |
| 关 键 词： | 奶牛 亚油酸 二十二碳六烯酸 奇数碳链脂肪酸 支链脂肪酸 原虫 |
Effects of dietary LA and DHA supplementation on odd and branch-chain fatty acid composition of rumen protozoa in dairy cows |
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| WANG lei,WANG Jia-qi,LI Fa-di,LIU Shi-jun,KHAS-Erdene,LIANG Song.Effects of dietary LA and DHA supplementation on odd and branch-chain fatty acid composition of rumen protozoa in dairy cows[J].Journal of Gansu Agricultural University,2010,45(1). | |
| Authors: | WANG lei WANG Jia-qi LI Fa-di LIU Shi-jun KHAS-Erdene LIANG Song |
| Institution: | 1.College of Animal Science and Technology;Gansu Agricultural University;Lanzhou 730070;China;2.State Key Lab of Animal Nutrition;Institute of Animal Science;Chinese Academy of Agriculture Science;Beijing 100193;China |
| Abstract: | Impact of a basal diet supplemented with LA and DHA on fatty acid composition of Hostein dairy cows was studied in this paper.Four Holstein dairy cows with permanent ruminal fistulas were randomly assigned to control (CK,basical diet without additional oil supplementation),basal diet with 2.7 % LA (LA),basal diet with 2.7 % LA plus 0.5 % DHA (LA+DHA),and basal diet with 0.5 % DHA (DHA) in a 4×4 latin square design.The results showed that odd and branch-chain fatty acids were important components of rumen protozoa. Compared with CK, C15∶0 and C17∶0 were decreased in LA+DHA group, however, major iso-fatty acids and anteiso-fatty acids were not affected by fat supplement. |
| Keywords: | dairy cow linoleic acid docosahexaenoic acid odd fatty acid branch-chain fatty acid protozoa |
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