Australian scientists aim to reduce sheep burps

A A A

Australian scientists are working to breed a sheep that belches less, as they look for ways to reduce harmful methane emissions from the country's woolly flocks, a researcher said Sunday.

Twelve percent of Australia's total greenhouse gas emissions originate with agriculture, and some 70 percent of that amount is blamed on ruminant livestock, with most of it coming from burps, study leader John Goopy said.

With sheep, almost all of the methane produced comes out of their mouths.

"There's not very much passed out the animal's anus at all," said Goopy, from the New South Wales Department of Industry and Investment.

Scientists are measuring the sheep's methane emissions by herding them into a specially designed booth shortly after they eat and then calculating the amount of gas belched.

They hope to find whether there is a genetic link between the sheep that produce the least methane, which could then be exploited to breed low-emissions sheep.

Of the 200 sheep so far tested, about half produced much more than average while the other half belched considerably less methane.

"The biggest single determinant of methane production in cattle and sheep is the amount of feed they eat. But even once that is taken into account, I have found significant differences between individual animals," Goopy told AFP.

The scientist said methane has about 17 times the environmental warming capacity of carbon dioxide, a greenhouse gas blamed for global warming.

He said if the methane produced by Australia's 80 million or so sheep was reduced by just 10 or 15 percent in the next decade, it would have "a substantial and also a long-term impact on our greenhouse gas emissions".

"And if we can find a hereditary link and specifically breed for that outcome it will be an ongoing reduction, it won't be a one-off."

Sport
sportSo, how closely were you paying attention during 2014?
Arts and Entertainment
Dennis speaks to his French teacher
tvThe Boy in the Dress, TV review
News
One father who couldn't get One Direction tickets for his daughters phoned in a fake bomb threat and served eight months in a federal prison
people... (and one very unlucky giraffe)
Arts and Entertainment
Joel Edgerton, John Turturro and Christian Bale in Exodus: Gods and Kings
film
PROMOTED VIDEO
Have you tried new the Independent Digital Edition apps?
News
i100
Arts and Entertainment
The Plaza Theatre in Atlanta, Georgia was one of the 300 US cinemas screening
filmTim Walker settles down to watch the controversial gross-out satire
Arts and Entertainment
Amy Adams and Christoph Waltz in Tim Burton's Big Eyes
film reviewThis is Tim Burton’s most intimate and subtle film for a decade
Life and Style
Mark's crab tarts are just the right size
food + drinkMark Hix cooks up some snacks that pack a punch
Arts and Entertainment
Jack O'Connell stars as Louis Zamperini in Angelina Jolie's Unbroken
film review... even if Jack O'Connell is excellent
Latest stories from i100
Have you tried new the Independent Digital Edition apps?
iJobs Job Widget
iJobs General

Selby Jennings: VP/SVP Credit Quant- NY- Investment Bank

Not specified: Selby Jennings: VP/SVP Credit Quant Top tier investment bank i...

Ashdown Group: Senior Marketing Executive- City of London, Old Street

£40000 - £43000 per annum + benefits: Ashdown Group: Senior Marketing Executiv...

Ashdown Group: Marketing Manager

£40000 - £43000 per annum + benefits: Ashdown Group: An international organisa...

Ashdown Group: Internal Recruiter -Rugby, Warwickshire

£25000 - £30000 per annum: Ashdown Group: Internal Recruiter -Rugby, Warwicksh...

Day In a Page

Aren’t you glad you didn’t say that? The worst wince-and-look-away quotes of the year

Aren’t you glad you didn’t say that?

The worst wince-and-look-away quotes of the year
Hollande's vanity project is on a high-speed track to the middle of nowhere

Vanity project on a high-speed track to nowhere

France’s TGV network has become mired in controversy
Sports Quiz of the Year

Sports Quiz of the Year

So, how closely were you paying attention during 2014?
Alexander Armstrong on insulting Mary Berry, his love of 'Bargain Hunt', and life as a llama farmer

Alexander Armstrong on insulting Mary Berry and his love of 'Bargain Hunt'

From Armstrong and Miller to Pointless
Sanchez helps Gunners hold on after Giroud's moment of madness

Sanchez helps Gunners hold on

Olivier Giroud's moment of madness nearly costs them
A Christmas without hope: Fears grow in Gaza that the conflict with Israel will soon reignite

Christmas without hope

Gaza fears grow that conflict with Israel will soon reignite
After 150 years, you can finally visit the grisliest museum in the country

The 'Black Museum'

After 150 years, you can finally visit Britain's grisliest museum
No ho-ho-hos with Nick Frost's badass Santa

No ho-ho-hos with Nick Frost's badass Santa

Doctor Who Christmas Special TV review
Chilly Christmas: Swimmers take festive dip for charity

Chilly Christmas

Swimmers dive into freezing British waters for charity
Veterans' hostel 'overwhelmed by kindness' for festive dinner

Homeless Veterans appeal

In 2010, Sgt Gary Jamieson stepped on an IED in Afghanistan and lost his legs and an arm. He reveals what, and who, helped him to make a remarkable recovery
Isis in Iraq: Yazidi girls killing themselves to escape rape and imprisonment by militants

'Jilan killed herself in the bathroom. She cut her wrists and hanged herself'

Yazidi girls killing themselves to escape rape and imprisonment
Ed Balls interview: 'If I think about the deficit when I'm playing the piano, it all goes wrong'

Ed Balls interview

'If I think about the deficit when I'm playing the piano, it all goes wrong'
He's behind you, dude!

US stars in UK panto

From David Hasselhoff to Jerry Hall
Grace Dent's Christmas Quiz: What are you – a festive curmudgeon or top of the tree?

Grace Dent's Christmas Quiz

What are you – a festive curmudgeon or top of the tree?
Nasa planning to build cloud cities in airships above Venus

Nasa planning to build cloud cities in airships above Venus

Planet’s surface is inhospitable to humans but 30 miles above it is almost perfect