Navigation Links
Appetite genes are key to better diets for poultry, study shows
Date:3/26/2013

The welfare of poultry could be improved by a discovery about how chickens regulate their appetites.

Scientists have identified how a chicken's genetic make-up can affect the signals sent from its stomach to its brain that tell a chicken when it has had enough to eat.

Poultry farmers often have to restrict food for chickens because some birds are insensitive to feelings of fullness and can overeat, affecting their ability to reproduce.

The study could make it easier to develop methods to develop diets that reduce excess growth more naturally in these birds.

Researchers say that genetic differences, which affect when chickens recognise when they have had enough to eat, could date back thousands of years when chickens were first domesticated and breeds were selected for their size.

The research was carried out by The Roslin Institute at the University of Edinburgh.

Dr Ian Dunn, who led the study, said: "The findings shed greater light on food intake in birds and help us understand why some breeds in general the faster growing types of chickens are more insensitive to feelings of fullness than others."

The study, published in the American Journal of Physiology, Endocrinology and Metabolism, focused on a protein called cholecystokinin (CCK) that has a key role in sending signals linked to being full from the gut to the brain.

The researchers, funded by the Biotechnology and Biological Sciences Research Council, found that some birds were better equipped than others at recognising the protein, making them more effective in triggering signals of feeling full.

The study involved cross-breeding a fast-growing meat production strain of chicken with a relatively slow-growing, chicken. The researchers looked at how the protein was processed in both types of chickens and in the new cross breed.

They showed that reduced levels of protein that recognizes the fullness signal also affected the chicken's natural body weight.

Their findings back up the theory that, when poultry were domesticated thousands of years ago and bred for increased size, their appetite levels were changed. The study could also help inform research looking at appetite regulation in other animals.

Dr Dunn said: "All species regulate their appetites to make sure the amount of food taken in is just the right to maintain body weight and fat content. Our research has shown that there is genetic variation in the interpretation of biological signals sent relating to being full. This also affects what would be considered to be the natural body weight of chickens."


'/>"/>

Contact: Tara Womersley
tara.womersley@ed.ac.uk
01-316-509-836
University of Edinburgh
Source:Eurekalert

Related biology news :

1. Appetite suppressant for scavenger cells
2. Low ghrelin -- reducing appetite at the cost of increased stress?
3. The appetite-suppressing effect of proteins explained
4. Genes may be reason some kids are picky about food
5. Researchers create map of shortcuts between all human genes
6. Sleator lab identifies single point mutation in Listeria monocytogenes
7. March of Dimes awards $250,000 to researcher who identified heart disease genes
8. 2 new genes linked to amyotrophic lateral sclerosis and related disorders
9. Scientists find surprising new influence on cancer genes
10. MBL scientists find genes linked to human neurological disorders in sea lamprey genome
11. Schizophrenia genes increase chance of IQ loss
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/23/2017)... Research and Markets has announced the addition of the ... Forecast to 2025" report to their offering. ... The Global Vehicle Anti-Theft System ... over the next decade to reach approximately $14.21 billion by 2025. ... forecasts for all the given segments on global as well as ...
(Date:3/20/2017)... , March 20, 2017 PMD Healthcare ... personal spirometer and Wellness Management System (WMS), a remote, ... Founded in 2010, PMD Healthcare is a Medical Device, ... a mission dedicated to creating innovative solutions that empower ... With that intent focus, PMD developed the first ever ...
(Date:3/7/2017)... BRIGHTON, England , March 7, 2017 Brandwatch ... been chosen by The Prince,s Trust to uncover insights ... insights across The Trust. The UK,s leading youth charity ... track social campaign results and get a better understanding of the ... ...
Breaking Biology News(10 mins):
(Date:3/24/2017)... Biotech Ltd. ("Sinovac" or the "Company") (NASDAQ: SVA), a leading provider ... that its board of directors has amended its shareholder rights plan. The ... 2017 to March 27, 2018. The amendment was not in response to ... ... Ltd. is a China -based biopharmaceutical company that ...
(Date:3/23/2017)... ... ... to announce it has become the premiere team-building cooking event company in San Diego. ... as Illumina, HP and Qualcomm, and is ranked #1 in its category on Trip Advisor. ... new team building format, a way for teams to not only interact with one another ...
(Date:3/23/2017)... MENLO PARK, Calif., March 23, 2017  BioPharmX ... developing products for the dermatology market, today reported ... Jan. 31, 2017, and will provide an update ... from the year. "We are pleased ... productive year for BioPharmX," said President Anja Krammer. ...
(Date:3/23/2017)... Colo. , March 23, 2017  Agriculture technology ... Series A financing and note conversion to commercialize its ... Planet is focused on developing products that are simultaneously ... $30 million in the last 18 months. This latest ... North Bridge Venture Partners. The company,s ...
Breaking Biology Technology: