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The possible use of long chain (C19-C32) fatty acids in herbage as an indigestible faecal marker

Published online by Cambridge University Press:  27 March 2009

N. D. Grace  and
D. R. Body
N. D. Grace
Affiliation:
Applied Biochemistry Division, D.S.I.R., Private Bag, Palmerston North, New Zealand
D. R. Body
Affiliation:
Applied Biochemistry Division, D.S.I.R., Private Bag, Palmerston North, New Zealand
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Extract

The organic matter (OM) intakes of grazing ruminants can be calculated from the digestibility of the OM and faecal OM outputs which in turn are determined indirectly by administering known amounts of indigestible markers such as Cr2O3 (Langlands, 1975). The possibility that the C19–C32 fatty acids in fresh herbage could be suitable as an indigestible marker for determining intakes of grazing animals was examined. An early report had shown that when ‘Grasslands Ruanui’ perennial ryegrass (Lolium perenne L.) was fed fresh to sheep the C19–C32 fatty acids appeared not to be absorbed because their concentration increased from 7·2% of the total dietary fatty acids to 23·9% of the total faecal fatty acids (Body & Hansen, 1978).

Type
Research Article
Information
The Journal of Agricultural Science , Volume 97 , Issue 3 , December 1981 , pp. 743 - 745
Copyright
Copyright © Cambridge University Press 1981

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References

REFERENCES

Body, D. R. (1973). Neutral lipids of leaves and stems of Trifolium repens. Phytochemistry 13, 1527–1530.CrossRefGoogle Scholar
Body, D. R. (1975). The occurrence of dihydrophytyl wax esters in bovine rumen liquor. Biochimica et Biophysica Ada 380, 45–51.CrossRefGoogle ScholarPubMed
Body, D. R. & Hansen, R. P. (1978). The occurrence of C12 to C31, branched-chain fatty acids in the faeces of sheep fed ryegrass, and of C12 to C34 normal acids in both the faeces and the ryegrass. Journal of the Science of Food and Agriculture 29, 107–114.CrossRefGoogle Scholar
Folch, J., Lees, M. & Sloane Stanley, G. H. (1957). A simple method for the isolation and purification of total lipids from animal tissues. Journal of Biological Chemistry 266, 497–509.CrossRefGoogle Scholar
Grace, N. D. & Body, D. R. (1979). Dietary lipid and absorption of Mg and Ca: effect of corn oil infused via the rumen on the absorption of Mg and Ca in sheep fed white clover. New Zealand Journal of Agricultural Research 22, 405–410.CrossRefGoogle Scholar
Hansen, R. P. & Czochanska, Z. (1976). Fatty acid composition of the subcutaneous and perinephric fats of lambs grazed on pasture in New Zealand. New Zealand Journal of Science 19, 413–419.Google Scholar
Langlands, J. P. (1975). Techniques for estimating nutrient intake and its utilization by the grazing ruminant. In Digestion and Metabolism in the Ruminant (ed. McDonald, I. W. and Warner, A. C. I.), pp. 320–332. Armidale, The University of New England Publishing Unit.Google Scholar
Morrison, W. R. & Smith, L. M. (1964). Preparation of fatty acid methyl esters and dimethylacetals from lipids with boron fluoride-methanol. Journal of Lipid Research 5, 600–608.CrossRefGoogle ScholarPubMed
Snedecor, G. W. (1956). Statistical Methods. Ames, Iowa: Iowa State University Press.Google Scholar
Wuthier, R. E. (1968). Lipids of mineralizing epiphyselol tissues in bovine foetus. Journal of Lipid Research 9, 68–78.CrossRefGoogle Scholar