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广西师范大学学报(自然科学版) ›› 2024, Vol. 42 ›› Issue (1): 191-199.doi: 10.16088/j.issn.1001-6600.2022121501
• 研究论文 • 上一篇
孙涛1,2, 梁丽芬1, 许艺兰3, 陈静1, 叶泉清1, 袁梦婷1, 宾石玉1,2*
SUN Tao1,2, LIANG Lifen1, XU Yilan3, CHEN Jing1, YE Quanqing1, YUAN Mengting1, BIN Shiyu1,2*
摘要: 本文旨在研究发酵罗汉果渣对黄羽肉鸡肠道形态和菌群的影响。选用1日龄健康的黄羽肉鸡360羽,随机分为4个组(Ⅰ、Ⅱ、Ⅲ和Ⅳ),每组6个重复,每重复15羽。对照组(Ⅰ组)饲喂基础饲粮,Ⅱ、Ⅲ和Ⅳ组于1~21日龄分别饲喂在基础饲粮中添加1%、3%和5%的发酵罗汉果渣等量替代玉米;于22~42日龄和43~70日龄分别在基础饲粮中添加5%、8%和10%的发酵罗汉果渣等量替代玉米,试验期70 d。结果显示:与Ⅰ组相比,21日龄和42日龄,Ⅱ、Ⅲ和Ⅳ组十二指肠、空肠、回肠的绒毛高度、隐窝深度及V/C值的差异不显著。70日龄,Ⅲ、Ⅳ组十二指肠隐窝深度分别降低36.01%(P<0.05)和33.46%(P<0.05),V/C值分别提高78.05%(P<0.05)和69.98%(P<0.05)。肠道菌群中,Ⅰ、Ⅲ组共有的OTU数目为537、特有OTU数目分别为55和7;在门水平上,核心菌门是厚壁菌门、拟杆菌门和变形菌门,其中Ⅲ组的变形菌门和肠杆菌门相对丰度显著低于Ⅰ组(P<0.05);在属水平上,Ⅲ组梭状芽孢杆菌群的相对丰度显著高于Ⅰ组(P<0.05),两组的α多样性指数和β多样性指数的差异不显著(P>0.05)。发酵罗汉果渣可改善黄羽肉鸡肠道微生态环境,促进其肠道健康。
中图分类号: S834
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