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| 酵母菌培养物对瘤胃发酵的影响 | |
| 引用本文： | 姜艳美,王加启,邓露芳,卜登攀,王金枝,魏宏阳,周凌云,雒秋江.酵母菌培养物对瘤胃发酵的影响[J].动物营养学报,2008,20(1):92-97. |
| 作者姓名： | 姜艳美 王加启 邓露芳 卜登攀 王金枝 魏宏阳 周凌云 雒秋江 |
| 作者单位： | 1. 中国农业科学院北京畜牧兽医研究所动物营养国家重点实验室,北京100094;新疆农业大学,乌鲁木齐830052 2. 中国农业科学院北京畜牧兽医研究所动物营养国家重点实验室,北京,100094 3. 新疆农业大学,乌鲁木齐,830052 |
| 基金项目： | 国际科技合作重点项目:“奶牛安全饲用微生物及其人工瘤胃评价技术研究”(2004DFA06700) |
| 摘 要： | 本研究采用完全随机试验设计,使用持续动态人工瘤胃装置,研究了酿酒酵母菌培养物对瘤胃发酵的影响。试验处理为对照组、1%和5%(占发酵液体积)酿酒酵母菌培养物添加组。通过对瘤胃液pH、微生物蛋白质(MCP)、氨态氮(NH3-N)、挥发性脂肪酸(VFA)浓度的测定得出以下结果:添加酿酒酵母菌培养物对pH和NH3-N浓度没有显著影响(P>0.05);5%酿酒酵母菌培养物添加组显著提高MCP浓度并降低了丙酸浓度(P<0.05);而酿酒酵母菌培养物对总挥发酸酸、乙酸、丁酸和乙、丙酸比例没有显著影响(P>0.05)。以上结果表明:添加一定量的酿酒酵母菌培养物可在不改变瘤胃发酵类型的情况下,促进微生物蛋白质的合成。 |
| 关 键 词： | 人工瘤胃 酿酒酵母菌 酵母菌培养物 瘤胃发酵 微生物蛋白质 |
| 修稿时间： | 2007年10月22 |
Effects of Yeast Culture on Ruminal Fermentation |
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| JIANG Yan-mei,WANG Jia-qi,DENG Lu-fang,BU Deng-pan,WANG Jin-zhi,WEI Hong-yang,ZHOU Ling-yun,LUO Qiu-jiang.Effects of Yeast Culture on Ruminal Fermentation[J].Acta Zoonutrimenta Sinica,2008,20(1):92-97. | |
| Authors: | JIANG Yan-mei WANG Jia-qi DENG Lu-fang BU Deng-pan WANG Jin-zhi WEI Hong-yang ZHOU Ling-yun LUO Qiu-jiang |
| Abstract: | The effects of yeast culture(Saccharomyces cerevisiae)supplementation on ruminal fermentation were investigated in this study using an artificial rumen device in a random design experiment.Treatments were as follows:control,1% and 5%(volume of the fermentation liquid)supplementation of yeast culture.Concentrations of NH3-N and the volatile fatty acids(VFAs)in ruminal fluids,the pH of ruminal fluids,and microbial crude proteins(MCP)concentration were determined,the results indicated that(1)ruminal pH and NH3-N concentration were not affected by supplementing yeast culture(P>0.05).(2)Supplementing 5% yeast culture increased the MCP concentration and decreased propionate concentration(P<0.01).(3)Total VFA,acetate,butyrate and acetate to propionate ratio were not significantly affected by supplementation of yeast culture(P>0.05).In conclusion,appropriate dose of yeast culture supplementation could improve microbial protein synthesis. |
| Keywords: | Artificial rumen Saccharomyces cerevisiae Yeast culture Ruminal fermentation Microbial protein |
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