Jiang Caiyun, Chen Ruochen, Shi Xuefeng, Zhuang Longyu, Zhou Chen, Zhou Wenbin, Li Junying, Xu Guiyun, Zheng Jiangxia
College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
Animals (Basel). 2023 Sep 29;13(19):3066. doi: 10.3390/ani13193066.
The purpose of this study was to compare the differences in the content of functional nutrients in eggs, performance parameters, and egg quality parameters of different chicken breeds. In Trial 1, 150 41-week-old hens of each breed, including the Dwarf Layer, White Leghorn, Silky fowl, Beijing-you chicken, and Shouguang chicken, were randomly assigned to the control (CON) and 2.5% flaxseed oil (FSO) groups to compare the difference in n-3 polyunsaturated fatty acid (PUFA) content in eggs. The contents of α-linolenic acid (ALA), eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and total n-3 PUFA in eggs were increased ( < 0.05) in the FSO groups. The ALA (4.28%), DHA (2.03%), and total n-3 PUFA (6.46%) contents in eggs of Dwarf Layer were the highest among the five breeds ( < 0.05). To further verify if other functional nutrients also have such differences, 600 24-week-old White Leghorn and Dwarf Layer were allocated to four groups: CON, FSO, 0.02% selenium-enriched yeast (SEY), and 0.20% marigold flower extract (MFE), in Trial 2. The content of functional nutrients in eggs was significantly increased ( < 0.05) after feeding these additions. After feeding FSO, the eggs of the Dwarf Layer had a higher n-3 PUFA content than the White Leghorn ( < 0.05). However, no significant differences were found in selenium and lutein content in different breeds. Performance and egg quality were not negatively impacted by FSO, SEY, or MFE.
本研究的目的是比较不同鸡品种鸡蛋中功能性营养素含量、生产性能参数和蛋品质参数的差异。在试验1中，将每个品种的150只41周龄母鸡，包括矮小型蛋鸡、白来航鸡、丝羽乌骨鸡、北京油鸡和寿光鸡，随机分为对照组（CON）和2.5%亚麻籽油（FSO）组，以比较鸡蛋中n-3多不饱和脂肪酸（PUFA）含量的差异。FSO组鸡蛋中α-亚麻酸（ALA）、二十碳五烯酸（EPA）、二十二碳六烯酸（DHA）和总n-3 PUFA的含量均有所增加（P<0.05）。矮小型蛋鸡蛋中ALA（4.28%）、DHA（2.03%）和总n-3 PUFA（6.46%）的含量在五个品种中最高（P<0.05）。为了进一步验证其他功能性营养素是否也存在此类差异，在试验2中，将600只24周龄的白来航鸡和矮小型蛋鸡分为四组：CON、FSO、0.02%富硒酵母（SEY）和0.20%万寿菊提取物（MFE）。添加这些物质后，鸡蛋中功能性营养素的含量显著增加（P<0.05）。饲喂FSO后，矮小型蛋鸡的鸡蛋中n-3 PUFA含量高于白来航鸡（P<0.05）。然而，不同品种间硒和叶黄素含量未发现显著差异。FSO、SEY或MFE对生产性能和蛋品质没有负面影响。
