饲料营养 Feed science and technology

饲粮中添加梧桐子油和罗格列酮对绵羊组织中脂肪酸组成及含量的影响

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  • 1. 内蒙古农业大学动物科学学院, 呼和浩特 010018;
    2. 内蒙古医科大学基础教研部, 呼和浩特 010110
史晓雪(1994-),女,河北邢台人,硕士研究生,从事反刍动物营养学研究。E-mail:shixiaoxue1994@163.com

收稿日期: 2017-11-22

  网络出版日期: 2018-06-20

基金资助

国家自然科学基金项目(31360560)

Effects of Dietary Supplementation of Phoenix Tree Seed Oil and Rosiglitazone on Tissue Composition and Contents of Fatty Acids of Sheep

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  • 1. College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China;
    2. Department of Basic Education, Inner Mongolia Medical University, Hohhot 010110, China

Received date: 2017-11-22

  Online published: 2018-06-20

摘要

本研究旨在探讨饲粮中添加硬脂酰辅酶A去饱和酶(SCD)的抑制剂(梧桐子油)和促进剂(罗格列酮)对绵羊背最长肌及皮下脂肪中脂肪酸组成及含量的影响。选用18只平均体重为(27.71±2.64)kg、生理状况相似的杂交公羊(美利奴×小尾寒羊♀)随机分为3组,每组6只。对照组(C组)饲喂基础饲粮+4.8%胡麻籽,梧桐子油组(W组)饲喂C组饲粮+15 g/d梧桐子油,罗格列酮组(L组)饲喂C组饲粮+8 mg/d罗格列酮。试验期50 d,其中过渡期10 d,预试期5 d,正试期35 d。结果表明:1)与C组相比,W组背最长肌中反-11油酸(trans-11 C18∶1)、反-9,12亚油酸(trans-9,12 C18∶2)的含量显著增加(P<0.05),亚麻酸(C18∶3)(n-6)含量显著降低(P<0.05),皮下脂肪中花生烯酸(C20∶1)含量显著升高(P<0.05),其他脂肪酸含量没有显著变化(P>0.05);2)与C组相比,L组背最长肌中trans-11 C18∶1、trans-9,12 C18∶2、顺-9,反-11共轭亚油酸(cis-9,trans-11 CLA)、多不饱和脂肪酸(PUFA)含量和PUFA/饱和脂肪酸(SFA)显著增加(P<0.05),C18∶3(n-6)和SFA的含量显著降低(P<0.05),皮下脂肪中癸酸(C10∶0)、顺-9油酸(cis-9 C18∶1)和花生三烯酸(C20∶3)(n-3)含量显著升高(P<0.05)。结果提示,饲粮中添加梧桐子油增加了绵羊背最长肌中trans-11 C18∶1、trans-9,12 C18∶2的含量,降低了C18∶3(n-6)的含量,增加了皮下脂肪中C20∶1的含量;饲粮中添加罗格列酮增加了绵羊背最长肌中trans-11 C18∶1、trans-9,12 C18∶2和cis-9,trans-11 CLA的含量,降低了C18∶3(n-6)的含量,增加了皮下脂肪中C10∶0、cis-9 C18∶1和C20∶3(n-3)的含量。

本文引用格式

史晓雪, 牛占宇, 幸超, 张三润, 闫婉姝, 张润厚 . 饲粮中添加梧桐子油和罗格列酮对绵羊组织中脂肪酸组成及含量的影响[J]. 动物营养学报, 2018 , 30(6) : 2328 -2336 . DOI: 10.3969/j.issn.1006-267x.2018.06.037

Abstract

The objective of this study was to investigate the effects of dietary supplementation of SCD inhibitor (phoenix tree seed oil) and accelerator (rosiglitazone) on fatty acid composition and contents in Longissimus dorsi muscle and subcutaneous fat of sheep. Eighteen crossbreed ram (Merino sheep×thin-tail Han sheep♀), similar in body weight[(27.71±2.64) kg] and body condition, were randomly divided into 3 groups with 6 sheep per group. Sheep in control group (C group) were fed a basal diet+4.8% linseeds; those in phoenix tree seed oil group (W group) were fed the C group diet supplemented with 15 g/d phoenix tree seed oil; those in rosiglitazone group (L group) were fed the C group diet supplemented with 8 mg/d rosiglitazone. The trial period lasted for 50 d consisting 10 d of transition period, 5 d of pretrial period and 35 d of trial period. The results showed as follows:1) compared with C group, W group had significantly higher contents of trans-11 C18:1 and trans-9, 12 C18:2 and significantly lower contents of C18:3 (n-6) in Longissimus dorsi muscle (P<0.05), and had significantly higher C20:1 content in subcutaneous fat (P<0.05), while other fatty acid contents were not significantly changed (P>0.05); 2) compared with C group, L group had significantly higher contents of trans-11 C18:1, trans-9, 12 C18:2, cis-9, trans-11 conjugated linoleic acid (CLA) and polyunsaturated fatty acid (PUFA)and PUFA/saturated fatty acid (SFA), and significantly lower C18:3 (n-6) and SFA contents in Longissimus dorsi muscle (P<0.05), and had significantly higher contents of C10:0, cis-9 C18:1 and C20:3 (n-3) in subcutaneous fat (P<0.05). The results indicate that dietary supplementation of phoenix tree seed oil increases contents of trans-11 C18:1 and trans-9, 12 C18:2 and decreased the content of C18:3 (n-6) in Longissimus dorsi muscle, and increases the content of C20:1 in subcutaneous fat; dietary supplementation of rosiglitazone increases the content of trans-11 C18:1, trans-9, 12 C18:2 and cis-9,trans-11 CLA and decreased the content of C18:3 (n-6) in Longissimus dorsi muscle, and increases contents of C10:0, cis-9 C18:1 and C20:3 (n-3) in subcutaneous fat.

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