Featured Research

from universities, journals, and other organizations

Grains And Lamb Offer New Sources Of Omega-3

Date:
October 1, 2009
Source:
CSIRO Australia
Summary:
New research is aiming at developing new dietary sources of long-chain omega-3 oils in grains and lamb. They are now developing oilseed crop plants that synthesize EPA and DHA in their oils.

Trials conducted by Will Bignell as part of his PhD research have shown there is good potential for boosting levels of long-chain omega-3 oils in lamb through breeding programs and tailored feeding.
Credit: CSIRO

CSIRO research on grains and lamb aimed at developing new dietary sources of long-chain omega-3 oils will be presented at the World Congress on Oils and Fats in Sydney in the end of September. CSIRO Food Futures Flagship scientist, Dr Surinder Singh, will outline his team’s progress on the transfer into crop plants of biochemical pathways for long-chain omega-3 synthesis sourced from marine microalgae.

“Long-chain omega-3 oils such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) have well-documented health benefits against coronary heart disease, rheumatoid arthritis and other disorders,” Dr Singh says.

“The main sources of these long-chain omega-3s are algal oils and fish oils – with 88 per cent of global fish oil production used by aquaculture. Our research aims to ensure that a sustainable, land-based production system can be developed to help meet the increasing demand.”

Dr Singh’s team has isolated and characterised a suite of highly efficient algal genes, and demonstrated the production of EPA and DHA in model land plants.

They are now developing oilseed crop plants that synthesise EPA and DHA in their oils and are relevant for Australian agriculture. The plants are expected to be available for commercial release by about 2015.

In related work, a PhD candidate with the Food Futures Flagship and the University of Tasmania, Will Bignell, will address the conference on the potential for raising the omega-3 oil content of lamb.

“Lamb already contains varied levels of long-chain omega-3 which can be boosted using marine algae and fish oils in feeds,” Mr Bignell says.

“Canola and lupin meals are common sheep feeds and understanding their effects on omega-3 oils will provide a foundation for ultimately raising the long chain omega-3 content of Australian lamb.”

In a feeding trial supported by Tasmanian sheep breeders, Mr Bignell found a diet of canola and lupin meal can maintain a base-level of long-chain omega-3 oil in five breeds of lambs and, while no variation in oil content was detected between breeds, there was a six-fold difference in long-chain omega-3 oil content between individual sheep.

“The results also show there is good potential to raise long-chain omega-3 oils in lamb through selective breeding and tailored feeding programs,” Mr Bignell says. “The next phase of my research is the development of DNA markers to help farmers breed towards higher levels of long-chain omega-3 oils.”

It is hoped these projects will lead to alternative dietary sources of long chain omega-3 oils.

The World Congress on Oils and Fats and 28th ISF (International Society for Fat Research) Congress will be held at the Sydney Convention & Exhibition Centre from 27–30 September.


Story Source:

The above story is based on materials provided by CSIRO Australia. Note: Materials may be edited for content and length.


Cite This Page:

CSIRO Australia. "Grains And Lamb Offer New Sources Of Omega-3." ScienceDaily. ScienceDaily, 1 October 2009. <www.sciencedaily.com/releases/2009/10/091001091807.htm>.
CSIRO Australia. (2009, October 1). Grains And Lamb Offer New Sources Of Omega-3. ScienceDaily. Retrieved April 16, 2014 from www.sciencedaily.com/releases/2009/10/091001091807.htm
CSIRO Australia. "Grains And Lamb Offer New Sources Of Omega-3." ScienceDaily. www.sciencedaily.com/releases/2009/10/091001091807.htm (accessed April 16, 2014).

Share This



More Health & Medicine News

Wednesday, April 16, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Outbreak Now Linked To 121 Deaths

Ebola Outbreak Now Linked To 121 Deaths

Newsy (Apr. 15, 2014) The ebola virus outbreak in West Africa is now linked to 121 deaths. Health officials fear the virus will continue to spread in urban areas. Video provided by Newsy
Powered by NewsLook.com
Cognitive Function: Is It All Downhill From Age 24?

Cognitive Function: Is It All Downhill From Age 24?

Newsy (Apr. 15, 2014) A new study out of Canada says cognitive motor performance begins deteriorating around age 24. Video provided by Newsy
Powered by NewsLook.com
How Mt. Everest Helped Scientists Research Diabetes

How Mt. Everest Helped Scientists Research Diabetes

Newsy (Apr. 15, 2014) British researchers were able to use Mount Everest's low altitudes to study insulin resistance. They hope to find ways to treat diabetes. Video provided by Newsy
Powered by NewsLook.com
Carpenter's Injury Leads To Hundreds Of 3-D-Printed Hands

Carpenter's Injury Leads To Hundreds Of 3-D-Printed Hands

Newsy (Apr. 14, 2014) Richard van As lost all fingers on his right hand in a woodworking accident. Now, he's used the incident to create a prosthetic to help hundreds. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins