| Experimental improvement of cow milk fatty acid composition in organic winter diets. | |
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MedLine Citation:
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PMID: 22173628 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND: Organic milk is seen as more healthy in terms of its fatty acid (FA) profile. In three on-farm crossover trials with 10-12 cows in each group, different forages were compared for their potential to improve the FA composition. Different hay qualities (hay of pasture vs. hay of leys), additional energy sources (fodder beets vs. wheat) and roughage qualities (hay of pasture vs. grass silage) were compared for their effect on the FA composition of the milk. RESULTS: Rumenic acid (CLA cis-9, trans-11) and α-linolenic acid (ALA) were selected as principal markers to evaluate effects. The overall CLA cis-9, trans-11 was low (3.6-6.3 g kg(-1) fat), whereas ALA levels were intermediate (6.8-9.4 g kg(-1) fat). Differences between the forages were explained by the fat metabolism of the ruminants. CONCLUSION: Organic winter milk is low in several desirable FAs. Diets rich in mature fodder and sugar were a poor choice for an improved FA composition. Copyright © 2011 Society of Chemical Industry. |
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Authors:
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Ton Baars; Jenifer Wohlers; Daniel Kusche; Gerhard Jahreis |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-12-16 |
Journal Detail:
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Title: Journal of the science of food and agriculture Volume: - ISSN: 1097-0010 ISO Abbreviation: - Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2011-12-16 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0376334 Medline TA: J Sci Food Agric Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Society of Chemical Industry. |
Affiliation:
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Department for Biodynamic Agriculture, University of Kassel, 37213 Witzenhausen, Germany; Current address: Research Institute of Organic Agriculture (FIBL), 5070 Frick, Switzerland. ton.baars@fibl.org. |
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