Navigation Links
What comes first…the chicken, the egg, or the bad attitude?

Researchers at the University of Alberta have discovered that chickens raised for meat can choose whether or not they'll funnel the nutrients they eat towards themselves or their eggs.

That phenomenon of 'reproductive attitude' is a headache for producers who must figure out how to deal with less productive hens that "partition" nutrients needed for egg production into their own bodies. "They like to be a little bit more selfish with their nutrients, and continue growing," said Dr. Martin Zuidhof, an Alberta Agriculture researcher who is collaborating with the University of Alberta to solve the dilemma.

"Some of the broiler breeders (parents of chickens raised for meat) are happy to shift their nutrients from the growth of their bodies to egg production, but some of them don't do it very willingly. It is not a conscious thing the bird does, but it does express a tendency of that bird to either be generous or to be selfish with its nutrients."

Channelling food into body-building results in lower egg production, chick production and chick quality, said Dr. Frank Robinson, professor of Agricultural Food and Nutritional Science at the University of Alberta.

The University of Alberta study of 300 high-performance broiler breeder hens explores the relationship between the hen's growth and reproductive performance, to improve our understanding of how producers can better manage the birds' body weight during puberty, and also during the egg-laying period that comes later.

No other broiler breeders research program works as closely with individual birds. The research team has shown the importance of recognizing that large poultry populations are made up of a collection of individuals--each with their own way of balancing their growth and reproductive priorities. "Building definitions of 'reproductive attitudes' has been an eye-opening process that challenges basic assumptions about how these birds function," said Dr. Rob Renema, a resea rcher in the Department of Agricultural Food and Nutritional Science at the University of Alberta.

Individual assessments have identified a small number of 'super-hens' that have an incredible growth potential and are also capable of producing many more chicks than usual. The more typical pattern is for the hen to lose some body weight to support egg production. "The trouble with this is that these 'martyr birds' may eventually suffer from burnout when they don't balance their own needs well enough," Dr. Renema said.

Discovery of the exceptional "super-mom" birds that don't fit the textbook norm has opened new doors in the research program. "If the offspring of these special hens are also more efficient, the broiler industry could move forward in leaps and bounds.

As a result of their findings, Robinson, Renema and Zuidhof have broadened their research focus to include exploration of links between hen reproductive attitude and broiler quality. Their work will contribute to the production of high-quality broilers and to the growing research focus on development of high-quality, value-added poultry products.


'"/>

Source:University of Alberta


Related biology news :

1. Growth in the sea comes down to a struggle for iron
2. Improved Outcomes Releases GeneLinker(TM) Gold and Platinum Version 4.6
3. BioMed Central welcomes the new National Institutes of Health public access policy
4. To sea or not to sea: When it comes to salmon sex, size sometimes doesnt matter
5. When it comes to cell entry, being average has its advantages
6. Predicting successful outcomes in living-donor liver transplants
7. Signature of chromosome instability predicts cancer outcomes
8. Gene expression becomes heterogeneous with age in humans and rats
9. For diseases, when it comes to sharing a home, only close relatives will do
10. Giant deep-sea tubeworms meal ticket comes in as a skin infection
11. When it comes to gene transcription, random pauses aren’t quite so random, study finds
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/21/2016)... British Columbia , June 21, 2016 /PRNewswire/ ... appointed to the new role of principal product ... been named the director of customer development. Both ... NuData,s chief technical officer. The moves reflect NuData,s ... teams in response to high customer demand and ...
(Date:6/16/2016)... 16, 2016 The global ... to reach USD 1.83 billion by 2024, according ... Inc. Technological proliferation and increasing demand in commercial ... to drive the market growth.      ... The development of advanced multimodal techniques for biometric ...
(Date:6/9/2016)... June 9, 2016  Perkotek an innovation leader in attendance control systems is proud ... work hours, for employers to make sure the right employees are actually signing in, ... ... ... ...
Breaking Biology News(10 mins):
(Date:12/9/2016)... According to a new market research report "Oligonucleotide Synthesis ... Application (Research, PCR, Gene, DNA, NGS, Diagnostic, RNAI), End user (Academic, ... market is expected to reach USD 2.20 Billion by 2021 from ... the forecast period. Continue Reading ... ...
(Date:12/8/2016)... La Jolla, CA (PRWEB) , ... December 08, 2016 , ... ... that 2016 was a banner year for team building events, new program offerings and ... focus, which it expanded earlier this year to include groups of over 30 people. ...
(Date:12/8/2016)... India , December 8, 2016 ... a comprehensive analysis, titled Global Amyloglucosidase Industry 2016 Market Research ... classification, application, and industry chain overview are all covered in ... SWOT analysis, and investment return analysis of the Amyloglucosidase industry. ... , , ...
(Date:12/8/2016)... , Dec. 8, 2016 Eurofins announces the appointment of ... President of Eurofins Scientific Inc. (ESI). Mr. Murray ... proven professional and entrepreneurial experience in leading international business teams. As ... food testing market to uphold Eurofins, status as the global leader ... , ...
Breaking Biology Technology: