Document Detail

Effects of corticosterone treatment in laying Japanese quail.
MedLine Citation:
PMID:  20461589     Owner:  NLM     Status:  MEDLINE    
1. The effects of exogenous corticosterone on plasma corticosterone concentrations, body weight, food intake, the percentage of birds that laid an egg each day and egg weight were measured in laying Japanese quail. Data were collected from birds in the week before corticosterone treatment began, during a 21-d treatment period, and in the 22 d after treatment ended. 2. Groups of quail were treated with corticosterone at three different concentrations in their drinking water. Corticosterone intakes were calculated for each bird and birds were then assigned to 4 intake groups. The groups were 0 (control group), 0.31-0.60, 0.61-0.90, 0.91-1.50 or >1.51 mg corticosterone/bird/d. 3. Plasma corticosterone concentrations in the 4 intake groups increased from around 1 ng/ml on the day before corticosterone treatment began to maximum mean concentrations of 13-18 ng/ml on day 14 of treatment. Mean corticosterone concentrations did not change between day 14 of treatment and the day after treatment ended, and had decreased in only one of 4 intake groups one week later. 4. Mean body weight in the highest intake group remained significantly lower than in controls 22 d after corticosterone treatment ended. Whilst there was no clear effect of corticosterone on food intake during treatment, mean food intake in the three highest corticosterone intake groups was significantly lower than in controls in the week after treatment ended. The percentage of birds that laid an egg each day and egg weight were both decreased by corticosterone, and the percentage of birds that laid an egg each day remained significantly lower in the highest corticosterone intake group compared with controls in the third week after treatment ended. 5. It is suggested that elevated plasma corticosterone concentrations in quail after treatment ended were maintained by a hyperactive hypothalamo-pituitary-adrenal axis for at least one week. Although none of the negative effects of corticosterone were evident in the group of quail with the lowest corticosterone intakes, the findings of the present study show that corticosterone treatment can affect birds for up to several weeks after corticosterone intake ends.
J P Wall; J F Cockrem
Related Documents :
3409079 - Experiments with the bio-mittent lighting system for laying hens.
18348639 - Influence of contamination by organochlorine pesticides and polychlorinated biphenyls o...
17969679 - Trends of perfluorinated alkyl substances in herring gull eggs from two coastal colonie...
14761089 - Determination of cooling rates and carbon dioxide uptake in commercially processed shel...
18931169 - The impact of temperature during the storage of table eggs on the viability of salmonel...
19439639 - The effects of edible coatings on chicken egg quality under refrigerated storage.
3119559 - Listeria monocytogenes--a current dilemma.
25251429 - Elisa testing for soy antigens in dry dog foods used in dietary elimination trials.
23472739 - Nutrient intake of european adolescents: results of the helena (healthy lifestyle in eu...
Publication Detail:
Type:  Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  British poultry science     Volume:  51     ISSN:  1466-1799     ISO Abbreviation:  Br. Poult. Sci.     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-05-12     Completed Date:  2010-08-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  15740290R     Medline TA:  Br Poult Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  278-88     Citation Subset:  IM    
Conservation Endocrinology Research Group, Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Body Weight / drug effects
Corticosterone / blood*,  pharmacology*
Coturnix* / blood
Dose-Response Relationship, Drug
Drug Administration Schedule
Reg. No./Substance:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Effects of different sources of dietary non-starch polysaccharides on the growth performance, develo...
Next Document:  Effect of egg composition on hatchability and on growth and slaughter characteristics of meat-type c...