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词汇 rumen
释义

Definition of rumen in English:

rumen

nounPlural rumina, Plural rumens ˈruːmɛnˈrumən
Zoology
  • The first stomach of a ruminant, which receives food or cud from the oesophagus, partly digests it with the aid of bacteria, and passes it to the reticulum.

    〔动〕瘤胃(反刍动物的第一胃)

    Example sentencesExamples
    • When calves are fed milk it is funnelled through the oesophageal groove to the true stomach, bypassing the rumen.
    • Energy from the grain apparently helps complete the conversion of nitrate to bacterial protein in the rumen.
    • Added fat at levels at or above 5% of the diet has been reported to impair fiber digestion in the rumen and to depress feed intake.
    • So mammals are unable to digest cellulose, except some ruminants that have cellulase-secreting bacteria in their rumens.
    • He was interested in improving digestive processes within the rumen, the first of the four stomachs of ruminant animals, where cellulose is broken down by bacteria.

Derivatives

  • ruminal

  • adjective ˈruːmɪn(ə)lˈrumən(ə)l
    Zoology
    • Relating to the rumen or first stomach of a ruminant.

      ovine ruminal fluid
      Example sentencesExamples
      • gas production during ruminal digestion
      • Few studies have been conducted to examine the effects of live yeast products on in vitro mixed ruminal microorganism fermentation.
      • Low quality forage also can negatively affect reproduction by decreasing efficiency of ruminal N utilization caused by limited energy supply.
      • The effects of both S. cerevisiae supplements on the fermentation of soluble starch by mixed ruminal microorganisms are shown in Table 4.

Origin

Early 18th century: from Latin, literally 'throat'.

Definition of rumen in US English:

rumen

nounˈro͞omənˈrumən
Zoology
  • The first stomach of a ruminant, which receives food or cud from the esophagus, partly digests it with the aid of bacteria, and passes it to the reticulum.

    〔动〕瘤胃(反刍动物的第一胃)

    Example sentencesExamples
    • When calves are fed milk it is funnelled through the oesophageal groove to the true stomach, bypassing the rumen.
    • So mammals are unable to digest cellulose, except some ruminants that have cellulase-secreting bacteria in their rumens.
    • Added fat at levels at or above 5% of the diet has been reported to impair fiber digestion in the rumen and to depress feed intake.
    • Energy from the grain apparently helps complete the conversion of nitrate to bacterial protein in the rumen.
    • He was interested in improving digestive processes within the rumen, the first of the four stomachs of ruminant animals, where cellulose is broken down by bacteria.

Origin

Early 18th century: from Latin, literally ‘throat’.

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