Navigation Links
Chickens with bigger gizzards are more efficient
Date:4/11/2013

April 10, 2013 - According to animal scientists, farmers could further protect the environment by breeding chickens with larger digestive organs. This research, published in the February issue of the Journal of Animal Science, could solve a major problem in poultry production.

In some areas, large poultry operations release nitrogen and phosphorus into the environment. These pollutants come from chicken waste, and they can cause ecological problems like algal blooms in rivers and lakes.

"These result in a loss of plant and animal species and have negative impacts on the use of water for human consumption," said study co-author Dr. Agnes Narcy in an interview.

Narcy, along with and fellow researchers from the French National Institute For Agricultural Research (INRA) and France's Center of Agricultural Research for Development (CIRAD), bred chickens to test whether selecting for larger digestive organ size could reduce the amount of waste that the chicken excreted.

The key organs were the proventriculus and the gizzard. The proventriculus is a stomach-like organ that softens food using acids and digestive enzymes. The gizzard is a compartment with thick, muscular walls that grinds food. Together, these organs prepare foods for digestion in the small intestine.

Narcy and fellow researchers hypothesized that chickens with larger, better functioning digestive organs would absorb more nutrients from their feed and therefore produce less waste. To test this hypothesis, the researchers selected chickens and raised three lines with differing abilities to digest feed.

After rearing nine generations of each line, the researchers found that chickens with larger digestive organs ate less feed and produced less waste. The researchers concluded that selecting for this trait could make poultry production more environmentally and economically sustainable. They say that a farmer raising 20,000 chickens could save 9.76 tons of feed per hatch.

"Furthermore, such selection would not affect body composition and meat and bone quality traits at slaughter age," said Narcy.

Narcy said the next step is for animal scientists to identify the genes that control digestive efficiency in chickens. By pinpointing the right genes, researchers could help farmers select the most efficient chickens for breeding.


'/>"/>

Contact: Madeline McCurry-Schmidt
madelinems@asas.org
217-689-2435
American Society of Animal Science
Source:Eurekalert

Related medicine news :

1. Ordinary chickens may be extraordinary in fighting cancer, says Texas A&M researcher
2. Feeding microbials to chickens leads to mysterious immune response
3. People Carrying Guns May Appear Bigger Than They Are
4. Productivity gains from health IT must await bigger health system changes
5. Math Anxiety Takes Bigger Toll on Girls: Study
6. In-Person Bullying Still Bigger Problem Than Cyberbullying: Expert
7. Behavior issues are a bigger headache for children with migraines
8. Bigger human genome pool uncovers rarer variants
9. Bigger Babies Have Bigger Brains as Teens: Study
10. Researchers discover regulator linking exercise to bigger, stronger muscles
11. High Blood Pressure Poses Bigger Stroke Risk for Blacks, Study Says
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... Viejo, California (PRWEB) , ... June 25, 2016 , ... ... to fit their specific project," said Christina Austin - CEO of Pixel Film Studios. ... fully customizable and all within Final Cut Pro X . Simply select a ...
(Date:6/25/2016)... ... ... On Friday, June 10, Van Mitchell, Secretary of the Maryland Department of Health and ... their exemplary accomplishments in worksite health promotion. , The Wellness at Work Awards took ... the BWI Marriott in Linthicum Heights. iHire was one of 42 businesses to receive ...
(Date:6/24/2016)... ... June 24, 2016 , ... June 19, 2016 is World Sickle ... chronic pain and the benefits of holistic treatments, Serenity Recovery Center of ... Sickle Cell Disease. , Sickle Cell Disease (SCD) is a disorder of the red ...
(Date:6/24/2016)... San Francisco, CA (PRWEB) , ... June 24, ... ... at CitiDent, is now offering micro-osteoperforation for accelerated orthodontic treatment. Dr. Cheng has ... , self-ligating Damon brackets , AcceleDent, and accelerated osteogenic orthodontics. , ...
(Date:6/24/2016)... ... June 24, 2016 , ... EB ... Decision Making in Emergency Medicine conference in Ponte Vedra Beach, FL. The awards ... in Emergency Medicine Practice and Pediatric Emergency Medicine Practice. , “With ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... 2016  VMS Rehab Systems, Inc. ( www.vmsrehabsystemsinc.com ) ... measures required to build a strong and stable market ... listed on the OTC Markets-pink current trading platform. ... "We are seeing an anomaly in market trading activities ... by the Company, but shareholders and market players as ...
(Date:6/24/2016)... , June 24, 2016  Collagen Matrix, ... design, development and manufacturing of collagen and mineral ... announced today that Bill Messer has ... Marketing to further leverage the growing portfolio of ... devices. Bill joins the Collagen Matrix ...
(Date:6/24/2016)... , June 24, 2016 ... has announced the addition of the " Global ... This report ... provides an updated review, including its applications in various ... total market, which includes three main industries: pharmaceutical and ...
Breaking Medicine Technology: