The bacteria of the rumen

Herbivores cannot directly absorb the vegetables they feed on, but they can through the action of the bacteria that colonise their digestive apparatus. Cattle chew vegetables for a long time and accumulate them in large amounts in the rumen, which is the first part of their stomach. In this hot, very humid place, bacteria quickly develop and attack the vegetal fibres. In so doing, the bacteria release the nutrients contained in these vegetables, which are then absorbed by the intestine. Horses do not have a rumen, but they host these precious bacteria in their long intestine.

Special reports

  • 26 October 2022

    Praising the meatball

    Let's learn to transform waste into resources!

    10 October 2022

    Spider lullaby

    There are spiders that weave a classic web, that one we all know, to catch prey. There are others who…

  • 19 September 2022

    Double blow to dinosaurs

    The Main Asteroid Belt is between Mars and Jupiter, an enormous ring consisting of millions of large and small rocks…

    24 May 2022

    Amphibians in peril

    The International Union for Conservation of Nature (IUCN) warns: the extinction rate of amphibians is about 200 times greater than…

  • 8 March 2022

    8 March. We remember Rosalind Franklin, the great female DNA scientist.

    DNA was first isolated by Friedrich Miescher, a Swiss biochemist in 1869. It was a brilliant, but not complicated operation:…

    27 February 2022

    In search of the riders of icebergs

    International Polar Bear Day, set up by Polar Bears International, a non-profit organisation, was held on 27 February. The aim…

  • 26 October 2022

    Praising the meatball

    Let's learn to transform waste into resources!

  • 10 October 2022

    Spider lullaby

    There are spiders that weave a classic web, that one we all know, to catch prey. There are others who…

  • 19 September 2022

    Double blow to dinosaurs

    The Main Asteroid Belt is between Mars and Jupiter, an enormous ring consisting of millions of large and small rocks…

From the Multimedia section

  • life

    A zoo in a drop

    Look

    life

    Bacteria 2

    Look

    life

    Bacterial colony

    Look
  • life

    Cyanobacteria

    Look

    life

    Intestinal bacteria

    Look

    life

    Microscopic structure of bacteria

    Look
  • life

    Structure bacterium

    Look

    life

    The growth curve of a bacterial colony

    Look

    life

    Various types of bacteria

    Look

Facts

  • Bacteria as detergents

    Enzymes are proteins produced by the cells of all living organisms...

    Bacteria as miners

    The ability of chemoautotrophic bacteria to take energy from...

    Bacteria as Sherlock Holmes

    A drop of blood, a fragment of skin or a hair found on the scene of a crime can supply…

  • High-fashion bacteria

    Some bacteria, the Clostridia, were used to make textile fibres...

    Down-pouring bacteria

    It sounds incredible, but recent researches have found that bacteria can cause some atmospheric phenomena...

    Bio-luminescence

    Many sea animals, including a lot of fish and molluscs that live in the dark in the ocean depths...

  • Decomposing organisms

    The ability to destroy organic matter has been used by man...

    Let’s eat!

    The economic importance of fungi is increased by the “edible” mushrooms...

    Predator mushroom

    <em>Pleutrotus ostreatus</em> mushroom does not have teeth or claws but it is...

  • 13 May 2011

    Bacteria as detergents

    Enzymes are proteins produced by the cells of all living organisms...

    Bacteria as miners

    The ability of chemoautotrophic bacteria to take energy from...

  • Bacteria as Sherlock Holmes

    A drop of blood, a fragment of skin or a hair found on the scene of a crime can supply…

    High-fashion bacteria

    Some bacteria, the Clostridia, were used to make textile fibres...

  • Down-pouring bacteria

    It sounds incredible, but recent researches have found that bacteria can cause some atmospheric phenomena...

    Bio-luminescence

    Many sea animals, including a lot of fish and molluscs that live in the dark in the ocean depths...