Key Laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, National Engineering Research Center of Biological Feed, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Key Laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, National Engineering Research Center of Biological Feed, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Food Chem. 2019 Dec 15;301:125198. doi: 10.1016/j.foodchem.2019.125198. Epub 2019 Jul 17.
The experiment was conducted to evaluate the effects of five rubber seed oil (RSO) levels (0, 1%, 2%, 4%, and 6%) on hens laying performance, egg quality, and yolks fatty acid composition and cholesterol contents. Three hundred and sixty 30-week-old Lohmann Brown laying hens were allotted to 5 groups. The results showed that the egg production was increased in 4% RSO group (P < 0.05), but egg quality parameters and the contents of dry matter, lipid, and protein in yolks were not influenced among treatments (P > 0.05). Yolk cholesterol contents were reduced in RSO supplemental groups (P < 0.05). The concentration of total n-3 PUFA in yolks increased gradually while the ratio of n-6/n-3 decreased gradually with increasing dietary RSO levels (P < 0.001). In conclusion, dietary RSO supplementation increased yolk n-3 PUFA levels, improved yolk color, and reduced yolk cholesterol contents without negative influence on laying performance parameters.
本实验旨在评估 5 种橡胶籽油（RSO）水平（0、1%、2%、4%和 6%）对产蛋母鸡产蛋性能、蛋品质、蛋黄脂肪酸组成和胆固醇含量的影响。将 360 只 30 周龄的罗曼褐蛋鸡分为 5 组。结果表明，4%RSO 组的产蛋率增加（P<0.05），但各处理组间蛋品质参数以及蛋黄中干物质、脂质和蛋白质含量无显著差异（P>0.05）。添加 RSO 组的蛋黄胆固醇含量降低（P<0.05）。随着日粮 RSO 水平的增加，蛋黄中总 n-3PUFA 浓度逐渐增加，n-6/n-3 比值逐渐降低（P<0.001）。总之，日粮 RSO 补充可增加蛋黄 n-3PUFA 水平，改善蛋黄颜色，降低蛋黄胆固醇含量，而对产蛋性能参数无负面影响。
