包封型亚麻籽油（蓝蓟籽油）增加了奶牛血浆脂质和乳脂中硬脂烯酸的含量。
Lipid-Encapsulated Echium Oil (Echium plantagineum) Increases the Content of Stearidonic Acid in Plasma Lipid Fractions and Milk Fat of Dairy Cows.
机构信息
†Department of Animal Science, University of Vermont, 570 Main Street, Burlington, Vermont 05405, United States.
§Department of Animal Science, Michigan State University, 474 South Shaw Lane, East Lansing, Michigan 48824, United States.
出版信息
J Agric Food Chem. 2015 May 20;63(19):4827-35. doi: 10.1021/acs.jafc.5b00857. Epub 2015 May 11.
The objective of this study was to evaluate the impact of feeding lipid-encapsulated echium oil (EEO) on animal performance and milk fatty acid profile. Twelve Holstein dairy cows were used in a 3 × 3 Latin Square design with 14 day periods. Treatments were a control diet (no supplemental fat), 1.5% dry matter (DM) as EEO and 3.0% DM as EEO. Treatments had no negative effect on animal performance (dry matter intake, milk yield, and fat yield). The milk fat content of total n-3 fatty acids and stearidonic acid (SDA) increased with EEO supplementation (P < 0.001). The proportion of SDA increased in all plasma lipid fractions with EEO supplementation (P < 0.001). Transfer of SDA from EEO into milk fat was 3.4 and 3.2% for the 1.5 and 3% EEO treatments, respectively. In conclusion, EEO increases the content of n-3 fatty acids in milk fat; however, the apparent transfer efficiency was low.
本研究旨在评估脂包被亚麻籽油（EEO）对动物生产性能和乳脂肪酸组成的影响。12 头荷斯坦奶牛采用 3×3 拉丁方设计，每个周期 14 天。处理组分别为对照组（不添加脂肪）、1.5%干物质（DM）EEO 和 3.0% DM EEO。各处理组对动物生产性能（干物质采食量、产奶量和乳脂产量）没有负面影响。EEO 补充剂增加了乳中总 n-3 脂肪酸和亚麻酸（SDA）的含量（P＜0.001）。EEO 补充剂增加了所有血浆脂质部分的 SDA 比例（P＜0.001）。SDA 从 EEO 转移到乳脂中的比例分别为 1.5%和 3.0% EEO 处理组的 3.4%和 3.2%。总之，EEO 增加了乳脂肪中 n-3 脂肪酸的含量；然而，表观转移效率较低。
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