摘要
The impact of fermented concentrate on the growth and rumen health of beef cattle remains an area of emerging research. This study aimed to assess the influence of a fermented concentrate (TRT) compared to a conventional concentrate (CON) on the growth, rumen fermentation characteristics, and microbiota composition in Korean cattle. Using a crossover design, eight cattle were alternately fed TRT and CON diets, with subsequent analysis of feed components, rumen fermentation parameters, and microbial profiles. TRT and CON diets did not differ significantly in their effect on animal growth metrics. However, the TRT diet was associated with reduced digestibility of rapidly degradable carbohydrates and modified rumen fermentation patterns, as evidenced by an elevated pH and increased acetate-to-propionate ratio (p < 0.05). Furthermore, the TRT diet increased the abundance of lactic acid bacteria, Bacillus, and yeast and organic acid levels in the rumen (p < 0.05). Moreover, Lachnospiraceae and Bacteroidales populations in the rumen and fecal Akkermansia abundance increased in the TRT group compared to the CON group. These microbial changes suggest a potential enhancement of the immune system and overall health of the host. Further research on the long-term implications of incorporating fermented concentrate into cattle diets is warranted.
摘要译文
发酵浓缩物对肉牛生长和瘤胃健康的影响仍然是新兴研究的领域。这项研究旨在评估发酵浓缩液（TRT）与常规浓缩物（CON）对韩国牛的生长，瘤胃发酵特征和微生物群组成相比。使用跨界设计，八支牛交替喂食trt和con饮食，随后分析了饲料成分，瘤胃发酵参数和微生物谱。TRT和CON饮食对动物生长指标的影响没有显着差异。然而，TRT饮食与迅速降解的碳水化合物和改良的瘤胃发酵模式的消化率降低有关，这证明了pH值升高和乙酸丙酸酯与偏位比的比例升高（p <0.05）。此外，TRT饮食增加了瘤胃中乳酸细菌，芽孢杆菌和酵母和有机酸水平的丰度（p <0.05）。此外，与CON组相比，TRT组的瘤胃和粪便中的lachnospileaceae和细菌种群在TRT组中有所增加。这些微生物变化表明，免疫系统和宿主的整体健康有潜在的增强。有必要对将发酵浓缩物纳入牛饮食的长期影响的进一步研究。
Seul Lee;Chae Hwa Ryu;Youl Chang Back;Sung Dae Lee;Hyeran Kim. Effect of Fermented Concentrate on Ruminal Fermentation, Ruminal and Fecal Microbiome, and Growth Performance of Beef Cattle[J]. Animals, 2023,13(23): 3622