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Dietary fatty acid intervention of lactating cows simultaneously affects lipid profiles of meat and milk.
MedLine Citation:
PMID:  22549272     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: The present study investigated tissue-specific responses of muscle and mammary gland to a 10 week intervention of German Holstein cows (n = 18) with three different dietary fat supplements (saturated fat; linseed oil or sunflower oil plus docosahexaenoic acid-rich algae) by analysing fatty acid profiles and quality parameters of meat and milk. RESULTS: Plant oil/algae intervention affected neither fat content nor quality parameters of meat but decreased fat content and saturated fatty acid amounts of milk. Linseed oil/algae intervention caused significantly higher concentrations of C18:3n-3 (meat, 1.0 g per 100 g; milk, 1.2 g per 100 g) and C22:6n-3 (meat, 0.3 g per 100 g; milk, 0.14 g per 100 g). Sunflower oil/algae intervention increased n-6 fatty acid contents in milk (4.0 g per 100 g) but not in meat. Elevated amounts of C18:1trans isomers and C18:1trans-11 were found in meat and especially in milk of plant oil/algae-fed cows. C18:1cis-9 amounts were found to be increased in milk but decreased in meat after plant oil/algae intervention. CONCLUSION: The present study demonstrated that dietary fatty acid manipulation substantially shifted the fatty acid profiles of milk and to a lesser extent of meat, whereas meat quality traits were not affected. Indications of tissue-specific responses of mammary gland and muscle were identified. Copyright © 2012 Society of Chemical Industry.
Authors:
Joaquin Angulo; Beate Hiller; Martha Olivera; Liliana Mahecha; Dirk Dannenberger; Gerd Nuernberg; Bernd Losand; Karin Nuernberg
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-30
Journal Detail:
Title:  Journal of the science of food and agriculture     Volume:  -     ISSN:  1097-0010     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-5-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376334     Medline TA:  J Sci Food Agric     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Society of Chemical Industry.
Affiliation:
Group Biogenesis, Faculty of Agricultural Science, University of Antioquia, AA 1226 Medellin, Colombia.
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