Wu Zhiwei, Liu Qunli, Ruan Zhenting, Wang Liuchao, Fan Jinghui, Chen Fei, Liu Zhangguo, Lu Lizhi
College of Food and Health, College of Animal Science and Technology, Zhejiang Agriculture & Forestry University, Hangzhou 311300, Zhejiang, China.
Hospital of Stomatology, Wuhan University, Wuhan 430000, Hubei, China.
Anim Biosci. 2024 Oct;37(10):1770-1780. doi: 10.5713/ab.24.0065. Epub 2024 May 7.
The objective of this study was to investigate the influence of yacon root extracts (YREs) on productive performance and health of laying hens.
Six hundred 30-week-old Xiaoshan Chicken layers were divided into 5 groups, control group, antibiotic positive control group, and 3 YREs treatment groups. In a 9-wk feeding experiment, at the end of wk 3, 6, and 9, twenty eggs were collected from each replicate to measure egg qualities. At the end of wk 9, three hen serum samples, and 5 hen cecal content samples were collected from each replicate.
Compared to the control group, 0.8%, 1.6%, and 2.4% YREs treatments could increase hens' daily feed intake, and YREs supplementation affected daily feed intake in linear manner. YREs did not change egg size, but 0.8% and 2.4% YREs changed egg shape by decreasing the egg shape index and sphericity, and 0.8% YREs tended to improve the eggshell breaking strength. Diet supplemented with 1.6% YREs might decrease yolk color grade but optimize the pH of thick egg white in fresh egg; moreover, 1.6% and 2.4% YREs might be helpful for eggs to inhibit water loss during storage, and YREs supplementation affected water loss rate in linear manner. 2.4% YREs could decrease the serum lactate dehydrogenases (LDH) level, and YREs supplemental levels linearly affected serum LDH content. Finally, YREs could enrich the diversity of intestinal microbiota of hens fed with 0.8% and be beneficial for the relative abundance of phylum Bacteroidota and Halobacterota; 2.4% YREs might increase the abundance of phylum Actinobacteriota and genus Bifidobacterium, while decrease genus Bacteroides; YREs supplemental levels affected the abundance of phylum Actinobacteriota, and genera Bifidobacterium and Bacteroides in linear manner.
Dietary supplementation with YREs could affect egg quality, protect the health of organs and exhibit prebiotic activity.
本研究旨在探讨雪莲果根提取物（YREs）对蛋鸡生产性能和健康的影响。
将600只30周龄的萧山蛋鸡分为5组，即对照组、抗生素阳性对照组和3个YREs处理组。在为期9周的饲养试验中，在第3、6和9周结束时，从每个重复组中收集20枚鸡蛋以测定蛋品质。在第9周结束时，从每个重复组中采集3份母鸡血清样本和5份母鸡盲肠内容物样本。
与对照组相比，0.8%、1.6%和2.4%的YREs处理可增加母鸡的日采食量，且YREs添加量对每日采食量有线性影响。YREs对蛋重无影响，但0.8%和2.4%的YREs通过降低蛋形指数和球形度改变了蛋形，0.8%的YREs有提高蛋壳破裂强度的趋势。添加1.6%YREs的日粮可能会降低蛋黄颜色等级，但可优化新鲜鸡蛋中浓蛋白的pH值；此外，1.6%和2.4%的YREs可能有助于鸡蛋在储存期间抑制水分流失，且YREs添加量对水分流失率有线性影响。2.4%的YREs可降低血清乳酸脱氢酶（LDH）水平，且YREs添加水平对血清LDH含量有线性影响。最后，YREs可丰富0.8%添加组母鸡肠道微生物群的多样性，并有利于拟杆菌门和盐杆菌门的相对丰度；2.4%的YREs可能会增加放线菌门和双歧杆菌属的丰度，同时降低拟杆菌属的丰度；YREs添加水平对放线菌门、双歧杆菌属和拟杆菌属的丰度有线性影响。
日粮中添加YREs可影响蛋品质，保护器官健康并表现出益生元活性。
