只有在食物被咀嚼并几乎消化到液态后，它才能通过瘤胃进入肠道。

Only when it has been chewed up and digested almost to a liquid can the food pass through the rumen and on through the gut.

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羊也是利用瘤胃、蜂巢胃、重瓣胃来消化草料（刍料）。

Goats use rumen, reticulum and omasum to digest silage.

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本论文第二部分主要研究了四种不同精粗比典型日粮条件下泌乳奶牛瘤胃氮素代谢、小肠蛋白质的消化吸收及其对生产性能的影响。

The second part was mainly conducted to study the effects of four typical diets on rumen nitrogen metabolism, protein digestion and absorption in the small intestine, and dairy cow's milk performance.

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