REVIEW PAPER
Endogenous synthesis of rumenic acid in humans and cattle
B. Niwińska 1  
 
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National Research Institute of Animal Production, Department of Animal Nutrition and Feed Science, 32-080 Balice, Poland
CORRESPONDING AUTHOR
B. Niwińska   

National Research Institute of Animal Production, Department of Animal Nutrition and Feed Science, 32-080 Balice, Poland
Publication date: 2010-05-09
 
J. Anim. Feed Sci. 2010;19(2):171–182
 
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ABSTRACT
Recent results of biomedical studies suggest that rumenic acid (RA), the major isomer of conjugated octadecadienoic acids (CLA), appears to have beneficial health effects in humans. The major source of RA in the human diet is milk and beef fat, but average intake is too low to exhibit a health-protective effect. In light of current studies, the total amount of RA available to humans also depends on the endogenous synthesis of RA through Δ9-desaturase activity with trans-vaccenic acid (VA) as the substrate. The results of experiments suggest that the endogenous synthesis of RA has positive effects on human health. The enrichment in VA and RA of bovine fat through the diet is well documented in the literature. Current research has demonstrated that Δ9- desaturase is responsible for more than 80% of RA in milk and beef fat and that the enzyme activity is affected by non-dietary factors. This review presents the current state of knowledge about the influences of breeds, stage of lactation, type of tissues, enzyme gene polymorphisms and interactions with other genes, nutrients and hormones at tissue level on the endogenous synthesis of RA in cattle.
 
CITATIONS (4):
1.
Short Communication: Erythrocytes assayed early ante mortem can predict adipose tissue and muscle trans-18:1 isomeric profiles of steers fed red clover silage supplemented with flaxseed
C. Mapiye, M. E. R. Dugan, T. D. Turner, D. C. Rolland, J. A. Basarab, V. S. Baron, T. A. McAllister, H. C. Block, B. Uttaro, J. L. Aalhus
Canadian Journal of Animal Science
 
2.
Effect of ruminally unprotected Echium oil on milk yield, composition and fatty acid profile in mid-lactation goats
Manuela Renna, Carola Lussiana, Paolo Cornale, Luca Maria Battaglini, Riccardo Fortina, Antonio Mimosi
Journal of Dairy Research
 
3.
Adipose tissue and muscle fatty acid profiles of steers fed red clover silage with and without flaxseed
C. Mapiye, T.D. Turner, D.C. Rolland, J.A. Basarab, V.S. Baron, T.A. McAllister, H.C. Block, B. Uttaro, J.L. Aalhus, M.E.R. Dugan
Livestock Science
 
4.
Nutritional strategies to improve the lipid composition of meat, with emphasis on Thailand and Asia
S. Jaturasitha, N. Chaiwang, A. Kayan, M. Kreuzer
Meat Science
 
ISSN:1230-1388