[Objective]The aim was to solve incomplete and not easy to replace filters and other issues of the existing fermentation plant fermentation, specifically for the design of a single outflow of continuous training the rumen in vitro fermentation culture systems supporting the closed device. [Method]Dietary forage to concentrate ratio of 30:70 by 1 000 g pellets selected as experimental material,mesh aperture of 200,100,80 and 60 meshs,one-way rotating and reciprocating rotating two kinds of mixing methods,in order to live sheep experiments for the control group. [ Results] Mesh pore size of 200 meshes,mixing method for the one-way rotating conditions,rumen fermentation characteristics is closer to the environment of sheep. [ Conclusion] Actual fermentation rate is slightly lower than the theory fermentation rate,reaches the fully fermented. The device can be used as the ideal model of simulation and research of rumen fermentation process.%[目的]为解决现有发酵装置的发酵不完全、过滤网不易更换等问题,设计一种专门为单外流瘤胃体外连续培养系统配套的密闭发酵装置.[方法]按日粮精粗比30∶70选取1 000 9颗粒饲料为试验材料,网孔孔径分别为200目、100目、80目和60目,采用单向转动和往复转动2种搅拌方式,以活体羊为对照组进行试验.[结果]在网孔孔径为200目、搅拌方式为单向转动的条件下,瘤胃发酵特性与活体羊体内环境更接近.[结论]实际发酵率略低于理论发酵率,基本达到完全发酵；该装置可以作为模拟和研究反刍动物瘤胃发酵过程的理想模型.
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