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Manipulating lamb conjugated linoleic acid content and stearoyl coenzyme A desaturase mRNA by either a grass or concentrate feeding regime

Published online by Cambridge University Press:  20 November 2017

R.J. Wynn ,
Z.C.T.R. Daniel ,
A.M. Salter  and
P.J. Buttery
R.J. Wynn
Affiliation:
Division of Nutritional Biochemistry, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, U.K.
Z.C.T.R. Daniel
Affiliation:
Division of Nutritional Biochemistry, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, U.K.
A.M. Salter
Affiliation:
Division of Nutritional Biochemistry, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, U.K.
P.J. Buttery
Affiliation:
Division of Nutritional Biochemistry, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, U.K.
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Extract

Conjugated Linoleic Acid (CLA) is a mixture of isomers of linoleic acid implicated with numerous health promoting properties. These include anti-carcinogenicity (cis -9, trans -11 isomer), anti-atherogenicity and increasing the lean:fat ratio (trans -10, cis -12 isomer). CLA is produced naturally by all ruminant animals through the incomplete biohydrogenation of linoleic acid within the rumen. Alternatively, it can be made endogenously by stearoyl coenzyme A desaturase (SCD) from vaccenic acid (VA) (Griinari et al, 2000). It has been well documented that cows fed on a grass diet produce more cis -9, trans -11 in milk than those fed on a concentrate based regime (Kelly et al, 1998) but to date, little work would appear to have been undertaken to determine if this is the case with sheep tissues. In the present study, a grass based diet was compared with a concentrate diet in order to determine whether the CLA content of adipose tissue differed and if so, which isomer and what mechanisms may be involved.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2002 , 2002 , pp. 183
Copyright
Copyright © The British Society of Animal Science 2002

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References

Daniel, Z.C.T.R., Wynn, R.J., Salter, A.M. and Buttery, P.J. 2002. Effect of increasing stearoyl coenzyme A desaturase mRNA concentrations using forage and concentrate diets on the fatty acid composition of ovine adipose tissue Proceedings of the British Society of Animal Science, 2002 Google Scholar
Griinari, J.M., Corl, B.A., Lacy, S.H., Chouinard, P.Y., Nurmela, K.V.V. and Bauman, D.E. 2000. Conjugated linoleic acid is synthesised endogenously in lactating dairy cows by Δ9 -desaturase Journal of Nutrition 130: 2285–2291.CrossRefGoogle Scholar
Kelly, M.L., Kolver, E.S., Bauman, D.E., Van Amburgh, M.E. and Muller, L.D. 1998. Effect of intake of pasture on concentrations of conjugated linoleic acid in milk of lactating cows Journal of Dairy Science 81: 1630–1636.CrossRefGoogle ScholarPubMed