Effects of Dietary n-6:n-3 PUFA Ratios on Lipid Levels and Fatty Acid Profile of Cherry Valley Ducks at 15-42 Days of Age
Effects of Dietary n-6:n-3 PUFA Ratios on Lipid Levels and Fatty Acid Profile of Cherry Valley Ducks at 15-42 Days of Age
复制标题
日粮 n-6:n-3 PUFA 比例对 15-42 日龄樱桃谷鸭脂质水平和脂肪酸谱的影响
DOI：
10.1021/acs.jafc.7b02918
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发表时间：
2017-11-22
影响因子：
6.1
通讯作者：
Wang, Wence
中科院分区：
文献类型：
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作者：
Li, Mengmeng;Zhai, Shuangshuang;Wang, Wence
本研究旨在探讨日粮中n - 6 : n - 3多不饱和脂肪酸（PUFA）比例对鸭生长性能、血清和组织脂质水平、脂肪酸组成以及肝脏脂肪酸合成基因表达的影响。共有3168只15日龄鸭被饲喂不同的n - 6 : n - 3 PUFA比例：13 : 1（对照）、10 : 1、8 : 1、6 : 1、4 : 1和2 : 1。饲养试验持续4周。我们的研究结果显示，日粮中n - 6 : n - 3 PUFA比例对生长性能没有影响。2 : 1组血清甘油三酯水平最高。13 : 1和8 : 1组血清总胆固醇和高密度脂蛋白水平高于6 : 1和2 : 1组。血清和组织（肝脏和肌肉）中C18 : 3n - 3的浓度随着日粮中n - 6 : n - 3 PUFA比例的降低而增加。肝脏中FADS2、ELOVLS、FADS1和ELOVL2的表达随着日粮中n - 6 : n - 3 PUFA比例的降低呈二次函数增加。这些结果表明，较低的日粮n - 6 : n - 3 PUFA比例对鸭可食用部位的脂肪酸组成以及n - 3 PUFA在脂肪组织中的沉积有显著影响。
The objective of this study was to investigate the effects of dietary n-6:n-3 PUFA ratio on growth performance, serum and tissue lipid levels, fatty acid profile, and hepatic expression of fatty acid synthesis genes in ducks. A total of 3168 15 day old ducks were fed different n-6:n-3 PUFA ratios: 13:1 (control), 10:1, 8:1, 6:1, 4:1, and 2:1. The feeding trial lasted 4 weeks. Our results revealed that dietary n-6:n-3 PUFA ratios had no effects on growth performance. The 2:1 group had the highest serum triglyceride levels. Serum total cholesterol and HDL levels were higher in the 13:1 and 8:1 groups than in the 6:1 and 2:1 groups. The concentration of C18:3n-3 in serum and tissues (liver and muscle) increased with decreasing dietary n-6:n-3 PUFA ratios. The hepatic expression of FADS2, ELOVLS, FADS1, and ELOVL2 increased on a quadratic function with decreasing dietary n-6:n-3 PUFA ratios. These results demonstrate that lower dietary n-6:n-3 PUFA ratios had strong effects on the fatty acid profile of edible parts and the deposition of n-3 PUFAs in adipose tissue of ducks.