Featured Research

from universities, journals, and other organizations

Genetic Information Advances The Breeding Of Dairy Cattle

Date:
November 25, 2008
Source:
MTT Agrifood Research Finland
Summary:
A Finnish researcher has demonstrated the impact of two candidate genes on the protein and fat content of milk and on the overall milk yield from dairy cows. The work also involved devising a method for identifying genetic polymorphisms in a sample extracted from a bovine embryo.

In her doctoral thesis, Research Scientist Sirja Viitala of MTT Agrifood Research Finland demonstrated the impact of two candidate genes on the protein and fat content of milk and on the overall milk yield from dairy cows. The work also involved devising a method for identifying genetic polymorphisms in a sample extracted from a bovine embryo.

Related Articles


Genetic mapping of cattle aims to identify genetic forms that are linked to quantitative trait loci (QTL) which are important for breeding purposes. Sirja Viitala charted scanned the genome of the Finnish Ayrshire cattle in the first phase of her doctoral thesis. Among the many chromosomal areas found to affect milk production, Viitala focused further on the impacts of chromosome 20.

Viitala pinpointed two genes as candidates for the effects in this chromosome and studied what influence polymorphisms in them had on milk production. A polymorphism in the gene encoding growth hormone receptor was found to have a direct impact on the dry matter content of milk. A polymorphism in the gene encoding prolactin receptor, in turn, was associated with the protein yield of milk. Patent protection has been sought for both discoveries.

The results were statistically verified using a separate data set which represents the current Finnish Ayrshire population.

Good dairy cows detected at embryo level

Besides genetic mapping, the research also developed a method for the genetic screening of bovines. The team developed a multiplication technology that allows researchers to extract enough material from a small sample to study several chromosomal areas. This way it is possible to extract a sample from an embryo without harming it, enabling researchers to determine the gender and several genes affecting milk production. The method allows researchers to select embryos containing the desired genes.

Genetic screening speeds up bovine breeding and makes it more efficient. The role of coincidence and the need to collect phenotypic data is reduced when the animals carrying the desired genes are identified very early, optimally before embryo transfer.


Story Source:

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


Cite This Page:

MTT Agrifood Research Finland. "Genetic Information Advances The Breeding Of Dairy Cattle." ScienceDaily. ScienceDaily, 25 November 2008. <www.sciencedaily.com/releases/2008/11/081117082244.htm>.
MTT Agrifood Research Finland. (2008, November 25). Genetic Information Advances The Breeding Of Dairy Cattle. ScienceDaily. Retrieved November 25, 2014 from www.sciencedaily.com/releases/2008/11/081117082244.htm
MTT Agrifood Research Finland. "Genetic Information Advances The Breeding Of Dairy Cattle." ScienceDaily. www.sciencedaily.com/releases/2008/11/081117082244.htm (accessed November 25, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Tuesday, November 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. Video provided by Newsy
Powered by NewsLook.com
Stray Dog Follows Adventure Racing Team for 6-Day Endurance Race

Stray Dog Follows Adventure Racing Team for 6-Day Endurance Race

Buzz60 (Nov. 24, 2014) A Swedish Adventure racing team travels to try and win a world title, but comes home with something way better: a stray dog that joined the team for much of the grueling 430-mile race. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com
Yellow-Spotted Turtles Rescued from Trafficking

Yellow-Spotted Turtles Rescued from Trafficking

Reuters - Light News Video Online (Nov. 24, 2014) Hundreds of Amazon River turtles released into the wild in Peru. Sharon Reich reports. Video provided by Reuters
Powered by NewsLook.com
Deadly Japanese Pufferfish Discovered in Crimean Waters

Deadly Japanese Pufferfish Discovered in Crimean Waters

Reuters - Light News Video Online (Nov. 24, 2014) The capture of deadly Japanese pufferfish in the waters of Crimea is causing concern for fishermen and scientists alike. Sharon Reich reports. Video provided by Reuters
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:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

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