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首页> 外文学位 >Effect of conjugated linoleic acid or oleic acid addition on fatty acid composition profiles of poultry meat.
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Effect of conjugated linoleic acid or oleic acid addition on fatty acid composition profiles of poultry meat.

机译：共轭亚油酸或油酸的添加对禽肉脂肪酸组成特征的影响。

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摘要

Two different studies were conducted to reduce the overall amount of omega-6 fatty acids in broiler chickens. The first experiment was performed to determine the effects of dietary conjugated linoleic acid (CLA) and omega-3 fatty acid combination on the omega-6 fatty acid accumulation in broiler chicken breast and thigh meat. Eight broilers from each treatment were processed at 4 and 6 weeks of age, respectively. Regarding the diets containing five different fat sources, broiler chickens fed CLA and fish oil diet had a lower C20:4 (arachidonic acid, AA, n-6) deposition but showed a higher n-3/n-6 ratio in breast and thigh meat than those fed a flaxseed oil diet and CLA and flaxseed oil diet (P 0.05). The C20:4 and n-3/n-6 ratio of breast and thigh samples from fish oil diet was similar to those of the conjugated linoleic acid and fish oil combination diet (P > 0.05). However, the addition of CLA and fish oil to the diet resulted in a increase of polyunsaturated fatty acid (PUFA) concentration in broiler chicken breast and thigh meat when compared to that of fish oil diet (P 0.05).;The second experiment was conducted based on six different combination of n-3 and n-9 fatty acids. One bird per pen was processed, and each bird was weighed, and blood, liver, breast and thigh samples from the bird were collected. Although the generation of prostaglandin E2 (PGE 2) was not affected due to combination of n-3 and n-9 fatty acids in our diets, the deposition of n-6 fatty acids including C18:2 and C20:4 was decreased in broiler chicken breast and/or thigh muscles as n-3 fatty acids were supplied to broiler chickens for 9 weeks. Eicosapentaenoic acid (C20:5, EPA, n-3) addition to poultry diet (FEO) did not reduce the deposition of C18:2 and/or C20:4 as much as C22:6 (FDO) did. When C20:5 and C22:6 were blended to poultry diet (FHO) and fed to broiler chickens for 9 weeks, synergistic effects were observed. Reduction of C20:4 was obtained when FHO diet was fed to broiler chickens, and it may be induced due to decreased expression of delta-6 desaturase mRNA.
机译：进行了两项不同的研究来减少肉鸡中omega-6脂肪酸的总量。进行第一个实验以确定日粮共轭亚油酸（CLA）和omega-3脂肪酸组合对肉鸡鸡胸肉和大腿肉中omega-6脂肪酸积累的影​​响。每种处理的八只肉鸡分别在4周和6周龄被加工。关于含有五种不同脂肪来源的日粮，饲喂CLA和鱼油日粮的肉鸡的C20：4（花生四烯酸，AA，n-6）沉积较低，但在乳房和大腿中的n-3 / n-6比例较高肉比那些饲喂亚麻籽油的饮食和CLA和亚麻籽油的饮食（P <0.05）。鱼油饮食中乳房和大腿样品的C20：4和n-3 / n-6比率与共轭亚油酸和鱼油组合饮食中的比率相似（P> 0.05）。然而，与鱼油饮食相比，在日粮中添加CLA和鱼油会导致肉鸡鸡胸肉和大腿肉中多不饱和脂肪酸（PUFA）浓度增加（P <0.05）。根据n-3和n-9脂肪酸的六种不同组合进行。每只钢笔处理一只鸟，每只鸟称重，并从该鸟中收集血液，肝脏，乳房和大腿样本。尽管我们饮食中的n-3和n-9脂肪酸组合不影响前列腺素E2（PGE 2）的生成，但肉鸡中n-6脂肪酸（包括C18：2和C20：4）的沉积减少了鸡胸和/或大腿肌肉，因为n-3脂肪酸被供应给了肉鸡9周。向家禽饮食（FEO）中添加二十碳五烯酸（C20：5，EPA，n-3）不能像C22：6（FDO）一样减少C18：2和/或C20：4的沉积。当将C20：5和C22：6与家禽饲料（FHO）混合并饲喂肉鸡9周时，观察到了协同作用。将FHO日粮饲喂肉鸡时，C20：4的降低，这可能是由于delta-6去饱和酶mRNA的表达降低所致。

著录项

  • 作者

    Shin, Dae Keun.;

  • 作者单位

    Texas A&M University.;

  • 授予单位 Texas A&M University.;
  • 学科 Agriculture General.;Health Sciences Nutrition.;Agriculture Animal Culture and Nutrition.
  • 学位 Ph.D.
  • 年度 2010
  • 页码 111 p.
  • 总页数 111
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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