Menu
Science blog
Map of the universe years in the making
Rogue bug may cause IVF failure
Technology decodes Alhambra inscriptions
Sonar causes deafness in dolphins
GM stem cells treat autoimmune disease
Nickel crash kick-started evolution
GPS inhalers track asthma triggers
Urban design turning kids off being active
Cleaning up oil spills can be bad for fish
Fluoro sensors to monitor recycled water
First cloned camel born in Dubai
Cephalopods share common toxic armoury
New evidence of aspirin risk for elderly
Salmonella vaccine could come from space
Porpoise-like sub swims with the current
Microbes thrive on iron under the ice
Blinking tower lights could save birds
Tradition can curb climate change: meeting
Coolest brown dwarf in universe found
'Silent' heart attacks quite common: study
World's land slipping in quality
Warning over 'natural' menopause therapies
Complex life pushed back in time
Lice may suppress asthma, allergies
  Genome map reveals cow's genetic makeup
The successful sequencing of the cow genome could lead to treatments for malaria and the development of a 'supercow' that thrives in harsh conditions, say Australian researchers.

Researchers involved in the US$52 million international collaboration say the work will revolutionise beef and milk production by giving producers access to cheap tests to assess the genetic quality of stock.

The findings of the project, partly funded by the CSIRO and led by Australian researchers, are published today in two reports in the prestigious journal Science.

More than 300 researchers from 25 countries have spent six years analysing the genome of a female Hereford cow, named L1 Dominette, the first mammalian livestock animal in the world to be sequenced.

While one team focused on the biology of cattle, a second team, the Bovine HapMap Consortium examined genetic diversity among different breeds to look at the evolution and domestication of bovines.

The majority of the sequencing by the Bovine Genome Sequencing and Analysis Consortium was completed at the Baylor College of Medicine in Houston in the US and was led by expatriate Australian, Dr Richard Gibbs.

One of the lead investigators on the project, Dr Ross Tellam, of CSIRO Livestock Industries, says the sequencing found the cattle genome contains at least 22,000 genes.

About 14,000 of these are common to all sequenced mammals, which include humans, rodents, dogs, opossums and the platypus, he says.

Tellam says these genes represent the "engine room" of mammalian biology.
Enhanced immunity

However, the cattle genome appears to have been significantly re-organised since its lineage diverged from a common mammalian ancestor about 95 million years ago.

Tellam says this re-organisation has altered genes involved in immunity, reproduction, lactation, digestion and metabolism, when compared with other mammals.

He says in particular, cows seem to have an enhanced ability to fight disease.

The project has major ramifications for the management of domesticated cattle (Bos taurus and Bos taurus indicus), which provide a significant source of milk, meat and clothing to nearly 6.6 billion people worldwide.

Tellam and co-author, Professor David Adelson, of the University of Adelaide, say the genetic sequencing should pave the way for more sustainable and efficient food production.

Readily available genetic testing "will mean livestock producers will not only be able to breed superior animals, but will be able to assess the genetic potential of the animals they have," says Adelson.

The cow genome may also play a role in helping develop medical treatments for human diseases.

For example, says Adelson, cows do not get malaria. By targeting those genes that are found in humans, but not in cows, he says, it "will narrow down" the possible targets for research.
Breeding 'Supercows'

Dr Bill Barendse of CSIRO Livestock Industries, was part of the group that constructed the bovine HapMap, which is outlined in the second Science paper.

The team examined 37,470 differences in the DNA of 497 different cattle from 19 geographically and biologically mixed breeds.

Barendse says that while they found the ancient population size was relatively large, its genetic diversity had been reduced by domestication, which began about 10,000 years ago.

He says this has important implications for future management of cattle populations.

"We need to conserve the genetic variability of cows to ensure we have enough [to provide for food] into the future," Barendse says.

The findings may also help maintain beef production as a viable industry in northern Australia.

Barendse says the technology will make it possible to develop a "supercow" that will cope with changes in temperature and rainfall expected to come with climate change.
Roads kill more than malaria: study
Seagrass link to seahorse upright posture
Black band disease hits Great Barrier Reef
Hobbit feet reignite debate
Lizards soak up sunshine vitamin
Canada sequences swine flu virus
Termites are a miner's best friend
'Hide and seek' costly to HIV
Giant trilobites had complex social lives
Midnight sun too much for some
More toxics added to 'dirty dozen' list
Rogue galaxies prompt rethink on Newton
Acupuncture relieves back pain: study
Blazars shed light on black hole physics
Unfaithful offspring get head start
Daydreamers might solve problems faster
Coal supply may be vastly overestimated
Science and unis are winners in the budget
Heartbeat key for blood growth in embryos
Neck pain worse for women in the office
Busty figurine a 'Paleolithic Playboy'
Plant cells help bees get a grip
Space trio to give sharper view of cosmos
Sea creatures inspire CO2 sponge
Genetic link between period onset and BMI
Researchers find bacteria in clouds
Sustainable farm research 'under threat'
Tree leaves monitor pollution levels
Menu
Stay upright during labour, say experts
Antarctic ice growth linked to ozone hole
Fires fuelling global warming: study
Methane climate shock 'less likely'
Genome map reveals cow's genetic makeup
Microbe bubble machine stores energy
Stress gives reef fish wonky ears
Swine flu remains a mystery
Perception is in the ear of the beholder
Solar wind gives asteroids a tanning
Researchers find grain's memory gene
PET bottles potential health hazard
Researchers find first common autism gene
Fossil fuel use must fall to 25%: study
'WaveRider' poised for hypersonic flight
Big cuttlefish 'at risk' from desalination
Glaciers show north-south climate divide
Mobile phones help cardiac rehab
Dancing birds feel the beat
Mushrooms may yield vitamin D bonanza
Dingoes may be a native's best friend
Dud treatments more easily spread
U2 comet dust predates solar system
Australian CO2 delay sends 'mixed message'
Visit Statistics
http://google.com/

http://bing.com/

https://gepatit-info.top/

https://serdechnic.com/

https://buy-meds24.com/

https://dverirespekt.ru/

https://www.sribno.net/

https://undergroundcityphoto.com/

https://detskiezabolevaniya.com/

http://grafaman.ru/

http://innoslicon.com/html/product/index.htm

https://yginekologa.com/

https://yes-com.com/

https://www.baikaleminer.com/

https://bitmaein.com/shop

https://www.artdeko.info/

https://aerodizain.com/

http://xn--d1abj0abs9d.in.ua/

http://lider82.ru/

http://sta-grand.ru/

http://snabs.kz/

https://sky-mine.ru/

https://rybalka-opt.ru/

http://snegozaderzhatel.ru/

https://xn--e1aaajzchnkg.ru.com/

http://hit-kino.ru/

http://www.regionshop.biz/

https://xn--80aaafbn2bc2ahdfrfkln6l.xn--p1ai/

https://pp-budpostach.com.ua/

https://vykup-avto-krasnodar.ru/

https://gcup.ru/

https://mega-polis.biz.ua/

http://vanrise.com.ua/

http://infra-e.ru/