Featured Research

from universities, journals, and other organizations

Genetic Marker Predicts Pig Litter Size

Date:
January 15, 2007
Source:
USDA/Agricultural Research Service
Summary:
Bigger is often better where litter size is concerned, especially when it comes to piglets. Scientists with the Agricultural Research Service's (ARS) U.S. Meat Animal Research Center in Clay Center, Neb., have identified a genetic marker that could help pig breeders select animals for increased uterine capacity and litter size. This genetic discovery could give swine breeding a boost in efficiency.

A newly identified genetic marker could help producers select sows to produce larger litters.
Credit: Image courtesy of USDA/Agricultural Research Service

Bigger is often better where litter size is concerned, especially when it comes to piglets.

Related Articles


Scientists with the Agricultural Research Service's (ARS) U.S. Meat Animal Research Center in Clay Center, Neb., have identified a genetic marker that could help pig breeders select animals for increased uterine capacity and litter size. This genetic discovery could give swine breeding a boost in efficiency.

How does the marker work? Research leader Jeffrey L. Vallet and his colleagues discovered a single nucleotide polymorphism, or SNP, in the erythropoietin receptor gene. The hormone erythropoietin binds to this gene and stimulates red blood cell production.

SNPs are genetic variations that provide information about an animal's genetic value and can be used in breeding programs. In studies on two unrelated swine populations, the scientists showed that this newly discovered SNP is associated with increased litter size, an important trait for the swine industry.

The SNP creates either a T or a C allele--an alternative form of a gene that controls traits such as hair or eye color in humans, for example. In swine, sows with the T allele have an average litter size that is one or two piglets greater than the average litter size of sows with the C allele, according to the study.

The T allele occurred at low frequency in the population studied, but is a beneficial genetic difference. So how can it be used to improve swine production?

Vallet and geneticist Bradley A. Freking have developed an assay to detect the SNP in individual sows. The ability to quickly identify the beneficial SNP allele could one day allow breeders to select sows with improved uterine capacity and litter size, thus increasing production efficiency.

ARS is the U.S. Department of Agriculture's chief scientific research agency.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. Note: Materials may be edited for content and length.


Cite This Page:

USDA/Agricultural Research Service. "Genetic Marker Predicts Pig Litter Size." ScienceDaily. ScienceDaily, 15 January 2007. <www.sciencedaily.com/releases/2007/01/070102121817.htm>.
USDA/Agricultural Research Service. (2007, January 15). Genetic Marker Predicts Pig Litter Size. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2007/01/070102121817.htm
USDA/Agricultural Research Service. "Genetic Marker Predicts Pig Litter Size." ScienceDaily. www.sciencedaily.com/releases/2007/01/070102121817.htm (accessed November 26, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Wednesday, November 26, 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
Feast Your Eyes: Lamb Chop Sent Into Space from UK

Feast Your Eyes: Lamb Chop Sent Into Space from UK

Reuters - Light News Video Online (Nov. 25, 2014) Take a stab at this -- stunt video shows a lamb chop's journey from an east London restaurant over 30 kilometers into space. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Cambodian Capital's Only Working Elephant to Retire in Jungle

Cambodian Capital's Only Working Elephant to Retire in Jungle

AFP (Nov. 25, 2014) Phnom Penh's only working elephant was blessed by a crowd of chanting Buddhist monks Tuesday as she prepared for a life of comfortable jungle retirement after three decades of giving rides to tourists. Duration: 00:36 Video provided by AFP
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

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