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Effect of the physical form of a lipid supplement on the polyunsaturated fatty acids, including conjugated linoleic acid, in muscle tissues of red deer and sheep

Published online by Cambridge University Press:  23 November 2017

G. A. Romero-Perez ,
R. W. Mayes ,
J. R. Scaife  and
J .A. Milne
G. A. Romero-Perez*
Affiliation:
University of Aberdeen, Aberdeen, United Kingdom
R. W. Mayes
Affiliation:
Macaulay Institute, Aberdeen, United Kingdom
J. R. Scaife
Affiliation:
Writtle College, Chelmsford, Essex, United Kingdom
J .A. Milne
Affiliation:
Macaulay Institute, Aberdeen, United Kingdom
*
Email:g.romero-perez@macaulay.ac.uk
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Extract

Proportions of polyunsaturated fatty acid (PUFA) in ruminant tissues are generally low as dietary PUFA including linoleic acid (LA) and α-linolenic acid (ALA) undergo biohydrogenation to stearic acid in the rumen. Conjugated linoleic acid (CLA) is formed during biohydrogenation as an intermediate metabolite. Feeding PUFA-rich sources can enhance deposition in the tissues of ruminants (Bolte et al, 2002), but the degree of lipid hydrogenation may depend on the source form and the ruminant species (Rowell-Schäffer et al, 2001). Bolte et al, (2002) showed that oilseed-fed sheep had higher PUFA proportions in their tissues than sheep fed a beet pulp-based diet but Rowell-Schäffer et al (2001) found in deer tissues higher PUFA proportions than in those of sheep. Possible effects of the form of the lipid source and the ruminant species on the fatty acids deposited were tested.

Type
Theatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2007 , April 2007 , pp. 15
Copyright
Copyright © The British Society of Animal Science 2007

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References

Bolte, M.R., Hess, B.W., Means, W.J., Moss, G.E. and Rule, D.C. (2002) Feeding lambs high-oleate or high-linoleate safflower seeds differentially influences carcass fatty acid composition J. Anim Sci. 80: 609–616 Google Scholar
Rowell-Schäffer, A., Lechner-Doll, M., Hofmann, R.R., Streich, W.J. Güven, B. and Meyer, H.H.D. (2001) Metabolic evidence of a ‘rumen bypass’ or a ‘ruminal escape’ of nutrients in roe deer (Capreolus capreolus) Comp. Biochem. Physiol. Part A 128: 289–298 Google Scholar