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.

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 July 31, 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 July 31, 2014).

Share This




More Plants & Animals News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Visitors Feel Part of the Pack at Wolf Preserve

Visitors Feel Part of the Pack at Wolf Preserve

AP (July 31, 2014) Seacrest Wolf Preserve on the northern Florida panhandle allows more than 10,000 visitors each year to get up close and personal with Arctic and British Columbian Wolves. (July 31) Video provided by AP
Powered by NewsLook.com
Florida Panther Rebound Upsets Ranchers

Florida Panther Rebound Upsets Ranchers

AP (July 31, 2014) With Florida's panther population rebounding, some ranchers complain the protected predators are once again killing their calves. (July 31) Video provided by AP
Powered by NewsLook.com
Dangerous Bacteria Kills One in Florida

Dangerous Bacteria Kills One in Florida

AP (July 31, 2014) Sarasota County, Florida health officials have issued a warning against eating raw oysters and exposing open wounds to coastal and inland waters after a dangerous bacteria killed one person and made another sick. (July 31) Video provided by AP
Powered by NewsLook.com
Raw: Thousands Flocking to German Crop Circle

Raw: Thousands Flocking to German Crop Circle

AP (July 30, 2014) Thousands of people are trekking to a Bavarian farmer's field to check out a mysterious set of crop circles. (July 30) Video provided by AP
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