sì / liào / jīng / guò / liú / wèi / fā / jiào / hòu / cái / néng / bèi / niú / gèng / hǎo / de / xī / shōu饲料经过瘤胃发酵后,才能被牛更好地吸收。After the feed ferments in the rumen, the cow can absorb it more effectively.