| Deposition of carotenoids in egg yolk by short-term supplement of coloured carrot (Daucus carota) varieties as forage material for egg-laying hens. | |
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MedLine Citation:
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PMID: 20393997 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Supplying egg-laying hens with different forage materials may influence egg production and quality. The aim of this study was to examine the short-term effects of standard feed plus 70 g day(-1) per hen of three coloured carrot varieties (orange, yellow and purple) as forage material in comparison with a standard feed control on egg production, egg yolk colour and deposition of carotenoids in the yolk. RESULTS: Carrot supplementation reduced feed intakes significantly, but not on a dry matter basis. Orange carrot treatment significantly reduced egg mass production, whereas yellow and purple carrot treatments did not differ from the control. Egg and yolk weights of all carrot-supplemented treatments were significantly lower than those of the control, but yolk percentages were similar. Yolk redness increased significantly in the order control < yellow < orange < purple. A similar trend was seen for yolk yellowness, but yellow and orange carrots reached the same level. Yolk colour and carotenoid contents correlated positively and significantly. In particular, purple carrot treatment increased the yolk content of lutein (>1.5-fold) and beta-carotene (>100-fold) compared with the control. CONCLUSION: Supplementing the feed of egg-laying hens with coloured carrots efficiently increased yolk colour parameters and carotenoid contents, which gives opportunities for improved nutritional value of eggs from forage material-supplemented hens. |
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Authors:
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Marianne Hammershøj; Ulla Kidmose; Sanna Steenfeldt |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of the science of food and agriculture Volume: 90 ISSN: 1097-0010 ISO Abbreviation: J. Sci. Food Agric. Publication Date: 2010 May |
Date Detail:
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Created Date: 2010-04-15 Completed Date: 2010-09-29 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0376334 Medline TA: J Sci Food Agric Country: England |
Other Details:
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Languages: eng Pagination: 1163-71 Citation Subset: IM |
Affiliation:
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Department of Food Science, Faculty of Agricultural Sciences, Aarhus University, DK-8830 Tjele, Denmark. marianne.hammershoj@agrsci.dk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animal Feed* Animals Carotenoids / metabolism* Chickens / metabolism* Color Daucus carota* Dietary Supplements Egg Yolk / metabolism* Eggs* / standards Energy Intake Female Lutein / metabolism Plant Roots* beta Carotene / metabolism |
| Chemical | |
Reg. No./Substance:
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127-40-2/Lutein; 36-88-4/Carotenoids; 7235-40-7/beta Carotene |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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