Quote:
Originally Posted by Michaelangelica
[In animals
Look at kangaroos they eat a much leaner diet than cows yet have a much greater uses of energy, Much more active than cows; able to run all day in extreme conditions. A cow would not survive on the scrubby native grasses they eat. Kangaroo faeces is about the size of a pea. Cow faeces is the size of a dinner plate. Kangaroos produce no methane; cows produces masses. Are the bacteria in kangaroo's stomachs much more efficient than the cows?
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Cows have methanogens living in their guts - hence the tons of methane they introduce into the atmosphere. Kangaroos apparently produce acetate which is a short-chain fatty acid produced by bifidobacteria, and those bifidobacteria are very beneficial to gut health, particularly in the prevention of bowel cancer. I'm not too sure of the role the bifis play in obesity, though.
Roo bugs to help cut sheep burps (ABC News in Science)
