猪在活动时使干垫料与固体猪粪的混合物滑到粪沟去。
The mixture of solid waste and dry litter works its way down-slope into the waste alley as a result of natural pig activity.
由于下行床具有短停留时间、气固流动更均匀和返混小的优点，能获得更高的产品收率，使干气收率受到抑制。
Owing to the short residence time, more uniform gas-solid flow and reduced backmixing of downer reactor, it can obtain more object products and the dry gas yield can be inhibited.
密苏里数据表明，牛脂加入高纤维日粮时牛的干物质进食量无变化，但牛脂加入低纤维日粮时则使干物质进食量下降。
Missouri data reported no change in dry matter intake when tallow was added to high fiber diets but decreased intake when tallow was added to low fiber diets.
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