Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Camels emit less methane than cows or sheep

10.04.2014

When digesting ruminants exhale methane. Their contribution to this global greenhouse gas is considerable. So far the assumption had been that camels with similar digestion produce the same amount of the climate-damaging gas. However, researchers at the University of Zurich and ETH Zurich have now shown camels release less methane than ruminants.

Ruminant cows and sheep account for a major proportion of the methane produced around the world. Currently around 20 percent of global methane emissions stem from ruminants.

In the atmosphere methane contributes to the greenhouse effect – that’s why researchers are looking for ways of reducing methane production by ruminants.

Comparatively little is known about the methane production of other animal species – but one thing seems to be clear: Ruminants produce more of the gas per amount of converted feed than other herbivores.

The only other animal group that regularly “ruminates” like ruminants are camels. This includes alpacas, llamas, dromedaries and Bactrian camels. They, too, have multi-chambered forestomachs. They, too, regurgitate food from the forestomach in order to reduce it in size through renewed chewing.

That’s why people assumed up to now that camels produce a similar amount of methane to ruminants. Researchers at the University of Zurich and ETH Zurich have now examined this assumption in a project sponsored by the Swiss National Science Foundation and have come to the following conclusion: in absolute terms camels release less methane than cows and sheep of comparable body size.

However, if one compares methane production with the amount of converted feed, then it is the same in both groups. “To calculate the proportion of methane produced, different estimated values should be used for camels than those used for ruminants”, explains Marcus Clauss from the Vetsuisse Faculty of the University of Zurich.

Lower metabolism – less feed – less methane

The modified calculation of the “methane budget” may be important for those countries with lots of camels – like the dromedaries in the Middle East and in Australia, or the alpacas and llamas in various South American countries. In cooperation with Zurich Zoo and private camel keepers, scientists from the University of Zurich and ETH Zurich have measured methane production in three types of camelids.

“The results show us that camels have a lower metabolism. Hence, they need less feed and release less methane than our domestic ruminants”, says the vet Marcus Clauss. The lower metabolism of camels could explain why they thrive particularly in areas with a shortage of food – desert and barren mountain regions.


Literature:
Marie T. Dittmann, Ullrich Runge, Richard A. Lang, Dario Moser, Cordula Galeffi, Michael Kreuzer, Marcus Clauss. Methane emission by camelids. PLOS ONE. April 9, 2014. doi:http://dx.plos.org/10.1371/journal.pone.0094363

Contacts:
Prof. Dr. Marcus Clauss
Department for Small Animals
University of Zurich
Tel. +41 44 635 83 76
Email: mclauss@vetclinics.uzh.ch

Weitere Informationen:

http://www.mediadesk.uzh.ch

Nathalie Huber | Universität Zürich

Further reports about: Atmosphere Australia ETH alpacas emissions metabolism methane emissions ruminates sheep

More articles from Ecology, The Environment and Conservation:

nachricht Microplastic pollution discovered in St. Lawrence River sediments
19.09.2014 | Canadian Science Publishing (NRC Research Press)

nachricht Researchers develop unique waste cleanup for rural areas
19.09.2014 | Washington State University

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Anzeige

Anzeige

Event News

"Start-ups and spin-offs funding – Public and private policies", 14th October 2014

12.09.2014 | Event News

BALTIC 2014: Baltic Sea Geologists meet in Warnemünde

03.09.2014 | Event News

IT security in the digital society

27.08.2014 | Event News

 
Latest News

No sedative necessary: Scientists discover new “sleep node” in the brain

19.09.2014 | Life Sciences

Sensing Neuronal Activity With Light

19.09.2014 | Life Sciences

Miranda: An Icy Moon Deformed by Tidal Heating

19.09.2014 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>