Determination of corticosterone concentrations in egg albumen: A non-invasive indicator of stress in laying hens.

J. A. Downing and W L Bryden (2008) Determination of corticosterone concentrations in egg albumen: A non-invasive indicator of stress in laying hens.. Physiology & Behavior, 95 3: 381-387. doi:10.1016/j.physbeh.2008.07.001


Author J. A. Downing
W L Bryden
Title Determination of corticosterone concentrations in egg albumen: A non-invasive indicator of stress in laying hens.
Journal name Physiology & Behavior   Check publisher's open access policy
ISSN 0031-9384
Publication date 2008-01-01
Sub-type Article (original research)
DOI 10.1016/j.physbeh.2008.07.001
Open Access Status DOI
Volume 95
Issue 3
Start page 381
End page 387
Total pages 7
Editor Dr. Jaap M Koolhass
Randall Sakai
Place of publication United States
Publisher Elsevier Inc.
Language eng
Subject C1
070702 Veterinary Anatomy and Physiology
830309 Poultry
Abstract Measurement of plasma corticosterone is difficult because the handling associated with blood sampling from birds is stressful. The use of non-invasive means of measuring stress could help to alleviate this problem. It was considered that the accumulation of plasma corticosterone into the egg albumen could provide a non-invasive indicator of stress in laying hens. The present study examined the relationship between plasma and egg albumen corticosterone concentrations and then determined what affect exposing hens to known stressors had on egg albumen corticosterone concentrations. Laying hens were given subcutaneous injections of either 0, 5, or 10 mg of corticosterone suspended in peanut oil and then the concentrations of corticosterone in the plasma and egg albumen determined. Also, groups of hens were handled, exposed to high ambient temperature and moved to new cages, all events known to be stress provoking, and then the concentrations of corticosterone in albumen determined. The injections increased plasma corticosterone concentrations substantially and these were directly related to the concentrations measured in the egg albumen. When hens were exposed to the various stressors, the level of corticosterone in the egg albumen increased. The corticosterone concentrations found in the egg albumen can provide a convenient non-invasive means of measuring stress in laying hens and other birds. Crown Copyright
Keyword Corticosterone
Egg albumen
Hens
Stress measurement
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Agriculture and Food Sciences
 
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Created: Wed, 15 Apr 2009, 01:48:20 EST by Mrs Kathy Bachmann on behalf of School of Animal Studies