Document Detail

Effects of dietary copper on production and egg cholesterol content in laying hens.
MedLine Citation:
PMID:  15484729     Owner:  NLM     Status:  MEDLINE    
1. This experiment was carried out to determine the effects of diets supplemented with different amounts of copper on egg production, food intake, food conversion ratio, egg weight, damaged egg ratio, specific gravity, mortality and cholesterol concentration in yolk. The experiment lasted 90 d and 400 Hisex-Brown hens, aged 27 weeks at the start of the study, were used. 2. There were no statistically significant effects of supplementary copper on egg production, food intake or food conversion efficiency. 3. There were no statistically significant differences between the groups in terms of damaged eggs, egg weight, specific gravity and live weight. 4. At the end of the experiment, the lowest yolk cholesterol concentrations were obtained in the 150 kg/kg copper group and the greatest concentrations were in the control group. 5. Consequently, the use of supplementary copper to provide 150 kg/kg in poultry diets was concluded to decrease yolk cholesterol concentrations without any effect on production performance.
T Balevi; B Coskun
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  British poultry science     Volume:  45     ISSN:  0007-1668     ISO Abbreviation:  Br. Poult. Sci.     Publication Date:  2004 Aug 
Date Detail:
Created Date:  2004-10-15     Completed Date:  2004-12-06     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  15740290R     Medline TA:  Br Poult Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  530-4     Citation Subset:  IM    
Department of Animal Nutrition and Nutritional Diseases, Faculty of Veterinary Medicine, University of Selçuk, Konya, Turkey.
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MeSH Terms
Animal Feed
Chickens / metabolism,  physiology*
Cholesterol / analysis*
Copper / administration & dosage,  pharmacology*
Dietary Supplements
Dose-Response Relationship, Drug
Egg Yolk / chemistry*,  drug effects
Eggs / analysis*
Reg. No./Substance:
57-88-5/Cholesterol; 7440-50-8/Copper

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

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