日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

   

Kangaroo farts may help global warming: scientists

(Agencies)
Updated: 2007-12-07 08:22

SYDNEY -- Australian scientists are trying to give kangaroo-style stomachs to cattle and sheep in a bid to cut the emission of greenhouse gases blamed for global warming, researchers say.


A Kangaroo and its baby are seen in this undated file photo. [Agencies]

Thanks to special bacteria in their stomachs, kangaroo flatulence contains no methane and scientists want to transfer that bacteria to cattle and sheep who emit large quantities of the harmful gas.

While the usual image of greenhouse gas pollution is a billowing smokestack pushing out carbon dioxide, livestock passing wind contribute a surprisingly high percentage of total emissions in some countries.

"Fourteen percent of emissions from all sources in Australia is from enteric methane from cattle and sheep," said Athol Klieve, a senior research scientist with the Queensland state government.

"And if you look at another country such as New Zealand, which has got a much higher agricultural base, they're actually up around 50 percent," he said.

Researchers say the bacteria also makes the digestive process much more efficient and could potentially save millions of dollars in feed costs for farmers.

"Not only would they not produce the methane, they would actually get something like 10 to 15 percent more energy out of the feed they are eating," said Klieve.

Even farmers who laugh at the idea of environmentally friendly kangaroo farts say that's nothing to joke about, particularly given the devastating drought Australia is suffering.

"In a tight year like a drought situation, 15 percent would be a considerable sum," said farmer Michael Mitton.

But it will take researchers at least three years to isolate the bacteria, before they can even start to develop a way of transferring it to cattle and sheep.

Another group of scientists, meanwhile, has suggested Australians should farm fewer cattle and sheep and just eat more kangaroos.

The idea is controversial, but about 20 percent of health conscious Australians are believed to eat the national symbol already.

"It's low in fat, it's got high protein levels it's very clean in the sense that basically it's the ultimate free range animal," said Peter Ampt of the University of New South Wales's institute of environmental studies.

"It doesn't get drenched, it doesn't get vaccinated, it utilizes food right across the landscape, it moves around to where the food is good, so yes, it's a good food."

It might take a while for kangaroos to become popular barbecue fare, but with concern over global warming growing in the world's driest inhabited continent, Australians could soon be ready to try almost anything to cut emissions.



Top World News  
Today's Top News  
Most Commented/Read Stories in 48 Hours
主站蜘蛛池模板: 麻豆国产精品va在线观看不卡 | 日本天堂网址 | 成人毛片免费播放 | 国产高清在线91福利 | 国产亚洲欧美一区 | 网红主播vip福利视频 | 日本精品在线 | 亚洲综合日韩欧美一区二区三 | 日本妇人成熟A片一区-老狼 | 一区二区在线不卡 | 国产精选经典三级小泽玛利亚 | 欧美精品国产制服第一页 | 国产精品成人在线观看 | 可以直接看的毛片 | 日本三级一区 | 爱爱视频在线观看 | 五月丁香啪啪. | 久操国产| 欧美成在人线a免费视频 | 欧美一级一片 | 亚洲欧美日韩中文综合v日本 | 在线国产欧美 | 国产成+人+亚洲+欧美+日韩 | 天天鲁天天爽天天视频 | 日韩午夜在线 | 国产精品三级国语在线看 | 素人视频在线观看免费 | 一道本视频 | 日本亚洲视频 | 大片在线免费观看 | 五月色电影 | 福利视频99| 激情狠狠 | 91国内精品久久久久怡红院 | 国产高清无专砖区2021 | 亚洲欧美视频一区二区 | 多女多p多杂交视频在线观看 | 精品国产一区二区三区免费 | 亚洲网站一区 | 成人性视频免费网站 | 亚洲一区免费在线观看 |