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Scientists to Breed Sheep that Burp Less

Sixteen percent of Australia's greenhouse emissions come from agriculture, so scientists there are busy trying to solve the problem of ... burping sheep?

"Ninety per cent of the methane that sheep and cattle and goats produce comes from the rumen, and that's burped out," John Goopy from the New South Wales Department of Industry and Investment told ABC.

"Not much goes behind - that's horses."

The scientists in New South Wales have been conducting experiments in specially designed pens where they measure how much gas sheep emit by burping. They have found, from tests on 200 sheep so far, that the more they eat, the more they belch.

The scientists' goal is to breed sheep that burp less: Link

I wonder if it would be feasible to filter the air entering and exiting a barn, to capture methane. Could that give a net gain of energy>
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Or... maybe figure out a way to reduce the demand for and reliance on animals. The fewer people that eat animals/ use animal products, the less demand, the fewer animals are raised, the lower the emissions of methane, co2, etc.... Seems simple enough to me.
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Actually I am suggesting that governments could reduce the demand, not the preference for meat. Animal farm subsidies create inexpensive meats (not proportional to the costs of raising/slaughtering/processing/transporting the animals). Another thing that could be done to reduce demand for meat is to ban "factory" farm practices. With animals at the true cost of production, in humane (well, more humane) farm settings, the use of animals would plummet. Therefore, less demand.
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Global warming is complete crap. Just a way for socialists to get your money. Green is the new Red. The only green the Greens want is your cash.
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The gas is generated by the bacteria that live in their rumen. A good approach would be to change the mixture of bacteria living there so they will not produce gaseous waste.

Methane is a common end-product of anaerobic bacteria, though. This implies that the part of the rumen that produces methane lacks sufficient oxygen to bring about a more complete breakdown of the food into carbon dioxide. A tough problem.
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