不同来源色素对蛋黄颜色及叶黄素沉积的影响  

Effects of Pigments from Different Sources on Yolk Color and Lutein Deposition in Layers

作　　者：朱颖 陈静 张灵玉 袁建敏 ZHU Ying;CHEN Jing;ZHANG Lingyu;YUAN Jianmin(State Key Laboratory of Animal Nutrition,College of Animal Science and Technology,China Agricultural University,Beijing 100193)

机构地区：[1]中国农业大学动物科学技术学院,动物营养国家重点试验室,北京100193

出　　处：《中国家禽》2020年第1期57-61,共5页China Poultry

基　　金：北京市科技项目(Z181100009318008);大学生创新项目(201910019309)。

摘　　要：为研究不同蛋鸡日粮类型中添加不同来源色素对蛋黄着色及叶黄素沉积的影响,试验1在玉米-豆粕日粮中添加天然或合成虾青素,测定蛋黄色度值(RYCF)和蛋黄中叶黄素含量;试验2在玉米-豆粕和小麦-豆粕日粮中添加混合天然色素(橙黄素∶辣椒红素=1∶1),测定RYCF及叶黄素含量。结果显示:天然虾青素对蛋黄着色无显著影响(P>0.05);合成虾青素可以显著提高RYCF(P<0.05)。不同来源虾青素对叶黄素的沉积无显著影响(P>0.05)。小麦日粮中添加混合天然色素可以显著提高蛋黄叶黄素含量和RYCF(P<0.05),且RYCF与蛋黄叶黄素含量有极显著的相关关系(P<0.01)。对混合色素添加量与RYCF进行拟合,预测RYCF达到8时,需添加混合天然色素2 340 mg/kg。结果表明:合成色素不会增加蛋黄叶黄素含量。在小麦-豆粕基础中添加1.2 g/kg的天然色素可以改善蛋黄色泽,若使RYCF达到8则需添加混合色素2 662 mg/kg。This study was aimed to investigate the effects of different source pigments on yolk pigmentation and egg lutein content in Layers. Experiment 1: natural or synthetic astaxanthin was supplemented to corn-soybean meal diet for assessment of yolk color(RYCF) and assay of lutein content in yolk. Experiment 2: mixed natural pigments(orange pigment and capsaicin was mixed based on 1∶1) was supplemented to corn-soybean meal or wheat-soybean meal diets to determine RYCF and lutein content. The results showed that natural astaxanthin had no significant effect on yolk pigmentation(P>0.05), and synthetic astaxanthin could significantly improve RYCF(P<0.05). Astaxanthin from different sources had no significant effect on lutein pigmentation(P>0.05). The content of lutein and RYCF in egg yolk of wheat-soy diet were significantly increased by mixed natural pigments level(P<0.05), and there was a significant correlation between RYCF and lutein content in egg yolk(P<0.01). It was predicted that when RYCF reaches 8, 2 340 mg/kg of mixed natural pigments should be supplemented. The results showed that synthetic pigments did not increase lutein content in yolk. Adding 1.2 g/kg natural pigments to wheat-soy base could improve the yolk color.

关 键 词：虾青素 蛋黄颜色 叶黄素 蛋鸡 

分 类 号：S831.5[农业科学—畜牧学]