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主要生态环境变化对离体瘤胃菌丛降解粗纤维能力的影响
Influence of eco environment on crude fibre resolvability of ruminal microbial flora in vitro culture.
【摘要】 瘤胃微生物动物体外发酵是在模拟反刍动物瘤胃生态环境的装置中进行的 .用长期在动物体外培养和筛选、继代的瘤胃菌丛 90 52 3 1在人工瘤胃装置中研究主要生态条件变化对其降解粗纤维能力的影响 ,发现在温度 30~ 40℃ ,扰动 60~ 72r·min- 1 、2 0min·h- 1 和底物C/N比为 1 0 /1的生态条件下分解粗纤维的能力最强 .发酵 5d可达到纤维分解率 36~ 41 %的水平 .
【Abstract】 With the equipments simulating the environment in a ruminant’s paunch the in vitro fermentation of ruminal microbial flora was performed to study the influence of major ecological conditions on crude fibre resolvability. It shows that the crude fibre resolvability is the strongest at the temperature of 30~40℃, stirring intensity of 60~72 r·min -1 with 20 min·h -1 and C/N of 10/1 in culture medium. The fibre resolving rate may reach 36~41% after five days of fermentation.
【关键词】 瘤胃菌丛;
生态条件;
粗纤维分解率;
【Key words】 Ruminal microbial flora; Ecological condition; Crude fibre resolvability.;
【Key words】 Ruminal microbial flora; Ecological condition; Crude fibre resolvability.;
【基金】 国家自然科学基金资助项目 !( 3 92 70 0 1 7)
- 【文献出处】 应用生态学报 ,Chinese Journal of Applied Ecology , 编辑部邮箱 ,1997年05期
- 【分类号】S816.3
- 【被引频次】5
- 【下载频次】69