Poult. Sci.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Christensen, V.
Right arrow Articles by Nestor, K.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Christensen, V.
Right arrow Articles by Nestor, K.
Poultry Science, Vol 78, Issue 11, 1601-1605
Copyright © 1999 by Poultry Science Association

Articles

Effect of supplemental oxygen on blood plasma organic acids within embryos from selected lines of turkeys

VL Christensen, WE Donaldson, and KE Nestor

Department of Poultry Science, North Carolina State University, Raleigh 27695-7608, USA. vern_christensen@ncsu.edu

The hypothesis was tested that increased oxygen tensions during the plateau stage of oxygen consumption (25 and 26 d of incubation) would cause different metabolic responses from embryos selected for increased egg production or growth. Embryos were exposed to 171 or 152 mm Hg partial pressure of oxygen from 25 to 28 d of incubation, a time when the oxygen conductance properties of the eggshell are exceeded by the embryonic tissue demands for oxygen. Carbohydrate and lipid metabolism were observed by measuring plasma organic acids in embryos from selected lines and randombred controls. (E was selected for increased egg production; RBC1 is the randombred line from which it was selected. F was selected for increased BW; RBC2 is the randombred line from which it was selected.) During the plateau stage in oxygen consumption, RBC2 embryos responded to added oxygen by utilizing fat rather than carbohydrate, whereas F embryos responded by using less fat as well as less carbohydrate from the liver and kidney. The response of F embryos to added oxygen is the opposite that might be expected for aerobic metabolism. The reason that selection for growth has resulted in such a metabolism is unknown. The E embryos displayed depressed lactate and beta-hydroxybutyrate levels, but plasma urates were elevated compared with RBC1, suggesting that the selection for egg production has also resulted in a unique metabolism. The embryonic processes described in the current study suggest that selected embryos are unable to respond to elevated partial pressure of oxygen by adjusting energy metabolism, which may result in increased embryonic mortality during this stage.


This article has been cited by other articles:


Home page
 Poult. Sci.Home page
E. O. Oviedo-Rondon, J. Small, M. J. Wineland, V. L. Christensen, J. L. Grimes, S. V. L. Funderburk, D. T. Ort, and K. M. Mann
Effects of Incubator Temperature and Oxygen Concentration During the Plateau Stage of Oxygen Consumption on Turkey Embryo Long Bone Development
Poult. Sci., August 1, 2008; 87(8): 1484 - 1492.
[Abstract] [Full Text] [PDF]

Home page
 Poult. Sci.Home page
V. L. Christensen, D. T. Ort, K. E. Nestor, G. B. Havenstein, and S. G. Velleman
Genetic Control of Embryonic Cardiac Growth and Functional Maturation in Turkeys
Poult. Sci., May 1, 2008; 87(5): 858 - 877.
[Abstract] [Full Text] [PDF]

Home page
 Poult. Sci.Home page
A. Lourens, H. van den Brand, M. J. W. Heetkamp, R. Meijerhof, and B. Kemp
Effects of Eggshell Temperature and Oxygen Concentration on Embryo Growth and Metabolism During Incubation
Poult. Sci., October 1, 2007; 86(10): 2194 - 2199.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1999 by the Poultry Science Association.