Featured Research

from universities, journals, and other organizations

Sheep Genomic Advances

Date:
March 15, 2011
Source:
Teagasc
Summary:
The sheep genome has finally made it on to the international genome sequencing research agenda. Traditionally, the small size of the international market for sheep products has limited investment in sheep genetic and genomic resources. Commercial sheep genomic resources have developed at a slower pace and to lower specifications than for other species of domesticated livestock.

The sheep genome has finally made it on to the international genome sequencing research agenda. Traditionally, the small size of the international market for sheep products has limited investment in sheep genetic and genomic resources. Commercial sheep genomic resources have developed at a slower pace and to lower specifications than for other species of domesticated livestock.

However, the formation of the International Sheep Genomics Consortium (ISGC) heralds a new era in sheep genomic research, says Dr Orla Keane in TResearch, Teagasc's Research and Innovation magazine. Thanks to DNA Chip technology much progress has already been made. "The ISGC has used a newly developed chip to genotype approximately 3,000 sheep of 74 breeds from around the world in the Sheep HapMap and breed diversity project. The sheep genotyped included approximately 50 each of the Galway and Suffolk breeds sourced from Teagasc and University College Dublin flocks" explains Dr Keane.

"The technology also makes mapping the gene responsible for a single gene recessive trait relatively straightforward. Since the chip was released, the technology has been successfully used to map and identify the gene responsible for microphthalmia (a recessive disorder causing blindness) and chondroplasia (a disease resulting in dwarfism and deformity of the limbs) in the Texel breed, yellow fat in the Perendale breed, and the gene responsible for polledness. As part of the EU Seventh Framework Programme 3SR project (Sustainable Solutions for Small Ruminants), the technology is currently being utilised by Teagasc researchers, in collaboration with the ISGC, to map the gene responsible for increased ovulation rate in the highly prolific Cambridge flock at the Teagasc Animal & Grassland Research and Innovation Centre, Athenry," says Dr Keane.

Such examples of gene identification can have an immediate impact on the sheep breeding industry by allowing sheep breeders to screen animals for the genes and select replacement stock, cull or avoid at-risk matings based on the results. The technology is also currently being utilised by Teagasc and collaborators to identify genes underpinning polygenic traits, such as production traits and parasite resistance. Furthermore, the technology is a fundamental tool required for genomic selection, where animals are selected on genomic rather than phenotypic characteristics.


Story Source:

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


Cite This Page:

Teagasc. "Sheep Genomic Advances." ScienceDaily. ScienceDaily, 15 March 2011. <www.sciencedaily.com/releases/2011/03/110315093836.htm>.
Teagasc. (2011, March 15). Sheep Genomic Advances. ScienceDaily. Retrieved April 21, 2014 from www.sciencedaily.com/releases/2011/03/110315093836.htm
Teagasc. "Sheep Genomic Advances." ScienceDaily. www.sciencedaily.com/releases/2011/03/110315093836.htm (accessed April 21, 2014).

Share This



More Plants & Animals News

Monday, April 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Mich. Boy Unearths 10,000-Year-Old Mastodon Tooth

Mich. Boy Unearths 10,000-Year-Old Mastodon Tooth

Newsy (Apr. 20, 2014) A 9-year-old Michigan boy was exploring a creek when he came across a 10,000-year-old tooth from a prehistoric mastodon. Video provided by Newsy
Powered by NewsLook.com
Vermont Goat Meat Gives Refugees Taste of Home

Vermont Goat Meat Gives Refugees Taste of Home

AP (Apr. 18, 2014) Dairy farmers and ethnic groups in Vermont are both benefiting from a unique collaborative effort that's feeding a growing need for fresh and affordable goat meat. (April 18) Video provided by AP
Powered by NewsLook.com
Man Claims He Found Loch Ness Monster With... Apple Maps?

Man Claims He Found Loch Ness Monster With... Apple Maps?

Newsy (Apr. 18, 2014) Andy Dixon showed the Daily Mail a screenshot of what he believes to be the mythical beast swimming just below the lake's surface. Video provided by Newsy
Powered by NewsLook.com
First Ever 'Female Penis' Discovered In Animal Kingdom

First Ever 'Female Penis' Discovered In Animal Kingdom

Newsy (Apr. 18, 2014) Not only are these newly discovered bugs' sex organs reversed, but they also mate for up to 70 hours. 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