Du Encun, Guo Wanzheng, Chen Fang, Fan Qiwen, Zhao Na, Zhang Wei, Huang Shaowen, Wei Jintao
Hubei Key Laboratory of Animal Embryo and Molecular Breeding Institute of Animal Science and Veterinary Medicine Hubei Academy of Agricultural Sciences Wuhan China.
Food Sci Nutr. 2020 Feb 10;8(3):1628-1635. doi: 10.1002/fsn3.1449. eCollection 2020 Mar.
With the shortage of high-quality forage in southern China, it is urgent to develop local unconventional forage resources, such as ramie. The objective of this study was to investigate the effects of dietary ramie levels on ruminal fermentation and rumen microbiota of Boer goats. A total of 60 Boer kids were allocated into four dietary treatments with 0, 10%, 20%, and 40% ramie, respectively. The results showed that the ruminal fermentation parameters were unaffected by the inclusion of 0%-20% ramie ( > .05). However, the ruminal concentration of total short-chain fatty acids, acetate, and butyrate increased linearly with increasing ramie proportions ( < .05). Notably, ramie at 40% level improved the production of butyrate compared with the other dietary treatments ( < .05). Increasing the dietary ramie proportion did not affect the alpha or beta diversity of the rumen microbial community, and the relative abundances of the microorganisms at phylum level and most of the identified microorganisms at genus level remain unchanged ( > .10) even though the relative abundance of and was increased respectively when 10% and 20% ramie was included ( < .05). Overall, the result of this study demonstrated that up to 40% ramie had no impairment in the ruminal fermentation or rumen microbiota of goats.
由于中国南方优质牧草短缺，迫切需要开发当地非常规牧草资源，如苎麻。本研究的目的是探讨日粮中苎麻水平对波尔山羊瘤胃发酵和瘤胃微生物群的影响。总共60只波尔山羊幼崽被分配到四种日粮处理组，苎麻含量分别为0%、10%、20%和40%。结果表明，添加0%-20%苎麻对瘤胃发酵参数无影响（P>0.05）。然而，瘤胃中总短链脂肪酸、乙酸和丁酸的浓度随苎麻比例的增加呈线性增加（P<0.05）。值得注意的是，与其他日粮处理相比，40%水平的苎麻提高了丁酸的产量（P<0.05）。增加日粮中苎麻比例对瘤胃微生物群落的α或β多样性没有影响，即使在添加10%和20%苎麻时，α变形菌门和β变形菌门的相对丰度分别增加（P<0.05），但门水平微生物的相对丰度和大多数已鉴定的属水平微生物的相对丰度保持不变（P>0.10）。总体而言，本研究结果表明，高达40%的苎麻对山羊的瘤胃发酵或瘤胃微生物群没有损害。
