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Improving the Effectiveness of Laying Hens for Use in Value-Added Egg Production. Open Access


Other title
Energetic Efficiency
Laying Hen
Gut morphology
Omega-3 PUFA
Type of item
Degree grantor
University of Alberta
Author or creator
Nain, Sandeep
Supervisor and department
Dr. Robert A. Renema (Agricultural, Food and Nutritional Science)
Examining committee member and department
Dr. Sven Anders (Rural Economy)
Dr. Douglas R. Korver (Agricultural, Food and Nutritional Science)
Dr. Martin J. Zuidhof (Agricultural, Food and Nutritional Science)
Department of Agricultural, Food, and Nutritional Science

Date accepted
Graduation date
Master of Science
Degree level
A series of experiments were conducted to explore factors affecting transfer of value-added ingredients from the diet to table eggs, with the goal of contributing to improvements in the enrichment process. Flaxseed-based ω-3 PUFA enrichment did not reduce lutein enrichment. The combine enrichment of lutein and ω-3 PUFA had decresed lipid oxidation potential. Also, when fed a ω-3 PUFA diet, birds scored as energetic Efficient had longer and wider villi, resulting in greater absorptive surface area/villi than Non-efficient hens. However, histomorphological differences did not affect transfer of ω-3 PUFA from diet to egg. Finally, birds fed graded levels of ω-3 PUFA to characterize change in lipid profile of egg and blood plasma in time reached a plateau in total ω-3 PUFA/egg in 5.9 to 6.6d, with High birds reaching the target of 300 mg/egg in 5d. Egg enrichment can be modulated by changes to the hen diet.
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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