Zhang Xiaoyun, Liu Xulei, Chang Shenghua, Zhang Cheng, Du Wuchen, Hou Fujiang
State Key Laboratory of Grassland Agro-Ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China.
Front Microbiol. 2022 Mar 31;13:840725. doi: 10.3389/fmicb.2022.840725. eCollection 2022.
For a long time, veterinary drugs and chemical additives have been widely used in livestock and poultry breeding to improve production performance. However, problems such as drug residues in food are causing serious concerns. The use of functional plants and their extracts to improve production performance is becoming increasingly popular. This study aimed to evaluate the effect of in sheep feed on rumen flora and to analyze the causes to provide a theoretical basis for the future use of as a functional substance to improve sheep production performance. A completely randomized experimental design was adopted using 24 six-month-old sheep males divided into four groups (six animals in each group) which were fed a basic diet composed of alfalfa and tall fescue grass. The feed was provided to sheep at different levels (0, 2, 4, and 6%) as experimental treatments. On the last day (Day 75), ruminal fluid was collected through a rumen tube for evaluating changes in rumen flora. The test results showed that , , and were the dominant species at the genus level in all samples. , , , , and differed significantly in relative abundance among the treatment groups. The polysaccharides in was the major factor influencing the alteration in rumen flora abundance, and had the functions of improving rumen fermentation environment and regulating rumen flora structure, etc. Hence, can be used to regulate rumen fermentation in grazing sheep to improve production efficiency.
长期以来，兽药和化学添加剂在畜禽养殖中被广泛使用以提高生产性能。然而，食品中的药物残留等问题引发了严重关注。使用功能性植物及其提取物来提高生产性能正变得越来越普遍。本研究旨在评估[具体物质]在绵羊饲料中对瘤胃菌群的影响，并分析其原因，为未来将[具体物质]作为功能性物质用于提高绵羊生产性能提供理论依据。采用完全随机试验设计，选用24只6月龄雄性绵羊，分为4组（每组6只），饲喂由苜蓿和高羊茅组成的基础日粮。将[具体物质]饲料以不同水平（0%、2%、4%和6%）提供给绵羊作为试验处理。在最后一天（第75天），通过瘤胃管采集瘤胃液以评估瘤胃菌群的变化。试验结果表明，在所有样本中，[具体属名1]、[具体属名2]和[具体属名3]是属水平上的优势菌种。[具体菌种1]、[具体菌种2]、[具体菌种3]、[具体菌种4]和[具体菌种5]在各处理组间的相对丰度存在显著差异。[具体物质]中的多糖是影响瘤胃菌群丰度变化的主要因素，具有改善瘤胃发酵环境和调节瘤胃菌群结构等功能。因此，[具体物质]可用于调节放牧绵羊的瘤胃发酵以提高生产效率。
