文献类型：期刊文献

英文题名：Effects of selenium supplementation on polyunsaturated fatty acid concentrations and antioxidant status in plasma and liver of lambs fed linseed oil or sunflower oil diets

作者：Yu, L. L.[1];Wang, R. L.[2];Zhang, Y. Z.[3];Kleemann, D. O.[4];Zhu, X. P.[1];Jia, Z. H.[1]

机构：[1]China Agr Univ, Coll Anim Sci & Technol, Beijing 100094, Peoples R China;[2]Guangdong Ocean Univ, Coll Agr Sci, Dept Anim Sci, Zhanjiang 524088, Peoples R China;[3]Beijing Chuangxin Kenong Agri Husbandry Technol, Beijing 100037, Peoples R China;[4]S Australian Res & Dev, Inst Turretfield, Res Ctr, Rosedale, SA 5350, Australia

年份：2008

卷号：140

期号：1-2

起止页码：39

外文期刊名：ANIMAL FEED SCIENCE AND TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000252472700003)、、Scopus(收录号：2-s2.0-37249083062)、WOS

语种：英文

外文关键词：lamb; selenium; linseed oil; sunflower oil; polyunsaturated fatty acid; antioxidant status

外文摘要：Thirty-two, 17 weeks old, wether lambs (Chinese Poll Dorset x Small Tailed Han x Charolais), weighing 26.3 +/- 1.2 kg, were used to evaluate effects of different Se levels and polyunsaturated fatty acid (PUFA) sources in the diet on fatty acid composition and antioxidant status in plasma and liver. Lambs were divided into four groups and each was fed one of the following diets: 950 g basal diet/kg DM and 50 g linseed oil/kg DM (LO); LO plus 2 mg Se/kg DM (as sodium selenite) (LOSe); 950 g basal diet/kg DM and 50 g sunflower oil/kg DM (SO); SO plus 2 mg Se/kg DM (SOSe). The experiment lasted 50 days and lambs were slaughtered at the end of it. Concentrations of C18:2trans-10, cis-12 in liver, and C18:1trans-11 in plasma, increased with Se supplementation, which also increased concentrations of C20:4 in lambs fed the sunflower oil diet, but not in those fed the linseed oil diet, in both plasma and liver. Fatty acid composition in plasma and liver reflected the dietary fatty acid source. Lambs fed the linseed oil diet had higher concentrations of C18:3n-3, C20:5n-3 and C22:6n-3. In contrast, lambs fed the sunflower oil diet had higher concentrations of conjugated linoleic fatty acid, C18:2n-6 and C20:4n-6. Antioxidant status increased with Se supplementation, but was not affected by PUFA source in the diets. Results indicate the possibility of increasing the PUFA deposition by combining Se with PUFA in lamb diets, and that Se increased concentrations of C20:4n-6 more efficiently when combined with the sunflower oil diet versus the linseed oil diet. (c) 2007 Elsevier B.V. All rights reserved.