DHA content in milk and biohydrogenation pathway in rumen: a review

文献类型： 外文期刊

第一作者： Huang, Guoxin

作者： Huang, Guoxin;Zhang, Yangdong;Zheng, Nan;Zhao, Shengguo;Liu, Kaizhen;Wang, Jiaqi;Huang, Guoxin;Xu, Qingbiao;Qu, Xueyin;Yu, Jing

作者机构：

关键词： alpha-linolenic acid; Biohydrogenation; Dairy cows; Docosahexaenoic acid; fat-1 gene; Ruminal microorganism

期刊名称：PEERJ （ 影响因子：2.984； 五年影响因子：3.369 ）

ISSN： 2167-8359

年卷期： 2020 年 8 卷

页码：

收录情况： SCI

摘要： Docosahexaenoic acid (DHA) is an essential human nutrient that may promote neural health and development. DHA occurs naturally in milk in concentrations that are influenced by many factors, including the dietary intake of the cow and the rumen microbiome. We reviewed the literature of milk DHA content and the biohydrogenation pathway in rumen of dairy cows aim to enhance the DHA content. DHA in milk is mainly derived from two sources: alpha-linolenic acid (ALA) occurring in the liver and consumed as part of the diet, and overall dietary intake. Rumen biohydrogenation, the lymphatic system, and blood circulation influence the movement of dietary intake of DHA into the milk supply. Rumen biohydrogenation reduces DHA in ruminal environmental and limits DHA incorporation into milk. The fat-1 gene may increase DHA uptake into the body but this lacks experimental confirmation. Additional studies are needed to define the mechanisms by which different dietary sources of DHA are associated with variations of DHA in milk, the pathway of DHA biohydrogenation in the rumen, and the function of the fat-1 gene on DHA supply in dairy cows.

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