The effects of feeding flaxseed to beef cows given forage based diets on fatty acids of longissimus thoracis muscle and backfat.
The effects of feeding flaxseed to beef cows given forage based diets on fatty acids of longissimus thoracis muscle and backfat.
复制标题
饲喂以饲料为主的肉牛饲喂亚麻籽对胸最长肌和背膘脂肪酸的影响。
DOI：
10.1016/j.meatsci.2011.05.016
复制
发表时间：
2011
期刊：
影响因子：
7.1
通讯作者：
J. K. G. Kramer
中科院分区：
文献类型：
--
作者：
R. Nassu;Michael E. R. Dugan;M. L. He;M. L. He;T. A. McAllister;J. Aalhus;N. Aldai;N. Aldai;J. K. G. Kramer
本研究旨在研究饲喂以干草或大麦青贮为基础的日粮（添加或不添加亚麻籽）的肉牛脂肪酸谱的变化。亚麻籽和干草均能显著提高胸最长肌和背膘中α-亚麻酸（LNA; 18：3 n-3）的含量（P<0.001）。对于大多数LNA生物氢化中间体，观察到饲料类型与亚麻籽水平的相互作用（P<0.05），这表明饲喂干草与亚麻籽组合导致最大水平的总共轭亚麻酸、总共轭亚油酸、总非共轭二烯和总反式-18：1。主要的生物氢化中间体包括t11，c15-18：2，瘤胃酸（c9，t11-18：2）和异油酸（t11-18：1）。
This study was conducted to investigate changes in fatty acid profiles of beef cows fed grass hay or barley silage based diets, with or without flaxseed supplementation. Both flaxseed and hay feeding increased levels of α-linolenic acid (LNA; 18:3n-3) in longissimus thoracis and backfat (P<0.001). A forage type by flaxseed level interaction was observed for most LNA biohydrogenation intermediates (P<0.05) that indicated feeding hay combined with flaxseed led to the greatest levels of total conjugated linolenic acid, total conjugated linoleic acid, total non-conjugated dienes and total trans-18:1. Predominant biohydrogenation intermediates included t11,c15-18:2, rumenic acid (c9,t11-18:2) and vaccenic acid (t11-18:1).