Hostname: page-component-8448b6f56d-c47g7 Total loading time: 0 Render date: 2024-04-17T23:50:26.265Z Has data issue: false hasContentIssue false
  • English
  • Français

Formaldehyde-treated casein–safflower oil supplement for dairy cows: II. Effect on the fatty-acid composition of plasma and milk lipids

Published online by Cambridge University Press:  01 June 2009

L. J. Cook ,
T. W. Scott  and
Y. S. Pan
L. J. Cook
Affiliation:
C.S.I.R.O., Division of Animal Physiology, Prospect, N.S.W., Australia
T. W. Scott
Affiliation:
C.S.I.R.O., Division of Animal Physiology, Prospect, N.S.W., Australia
Y. S. Pan
Affiliation:
C.S.I.R.O., Division of Animal Genetics, Badgery's Creek, N.S.W., Australia
Get access Rights & Permissions [Opens in a new window]

Summary

This study reports the effect of feeding formaldehyde-treated or untreated spray-dried casein–safflower oil (1:1, w/w) particles on the fatty-acid composition of milk and plasma lipids of cows.

When the formaldehyde-treated particles were given to Jersey, Sahiwal and Jersey × Sahiwal crossbred cows (1 kg per cow per day) the linoleic acid (18:2) present in the safflower oil was not hydrogenated by the rumen micro-organisms and was incorporated into milk fat.

When the untreated supplement was fed, however, the 18:2 fatty acid was hydrogenated in the rumen and there was an increased proportion of octadecenoic acid (18:1) in the milk fat.

The increased proportions of 18:2 (treated supplement) and 18:1 (untreated supplement) were associated with decreased proportions of palmitic (16:0) and myristic (14:0) acids in the milk fat. All 3 breeds showed similar responses.

The fatty-acid composition of plasma triglycerides, which are an important source of long-chain fatty acids for mammary-gland lipogenesis, was similarly affected. Furthermore, there were significant changes in the fatty-acid composition of other plasma lipids (e.g. phospholipids and cholesteryl esters). The interrelationships between dietary, plasma and milk fatty-acid compositions are discussed.

Type
Research Article
Information
Journal of Dairy Research , Volume 39 , Issue 2 , June 1972 , pp. 211 - 218
Copyright
Copyright © Proprietors of Journal of Dairy Research 1972

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Barry, J. M., Bartley, W., Linzell, J. L. & Robinson, D. S. (1963). Biochem. J. 89, 6.CrossRefGoogle Scholar
Bickerstaffe, R. & Annison, E. F. (1969). Comp. Biochem. Physiol. 31, 47.CrossRefGoogle Scholar
Cook, L. J. & Scott, T. W. (1970). 18th Int. Dairy Congr., Sydney 1E, 510.Google Scholar
Cook, L. J., Scott, T. W., Faichney, G. J. & Lloyd Davies, H. (1972). Lipids. 7, 83.CrossRefGoogle Scholar
Folley, S. J. & McNaught, M. L. (1961). In Milk: the Mammary Gland and Its Secretion, Vol. 1, p. 441. (Eds Kon, S. K. and Cowie., A. T.) New York: Academic Press.Google Scholar
Garton, G. A. (1967). Wld Rev. Nutr. Diet. 7, 225.CrossRefGoogle Scholar
Glascock, R. F., Duncombe, W. G. & Reinius, L. R. (1956). Biochem. J. 62, 535.CrossRefGoogle Scholar
Glomset, J. A. (1968). J. Lipid Res. 9, 155.CrossRefGoogle Scholar
Hartmann, P. E. & Lascelles, A. K. (1964). Aust J. biol. Sci. 17, 935.CrossRefGoogle Scholar
Hartmann, P. E. & Lascelles, A. K. (1966). J. Physiol, Lond. 184, 193.CrossRefGoogle Scholar
Hilditch, T. P. & Williams, P. N. (1964). The Chemical Constitution of Natural Fats, 4th edn.London: Chapman and Hall.Google Scholar
Lauryssens, M., Verbeke, R. & Peeters, G. (1961). J. Lipid Res. 2, 383.CrossRefGoogle Scholar
McCarthy, R. D., Ghiardi, F. L. A. & Patton, S. (1965). Biochim. biophys. Acta 98, 216.CrossRefGoogle Scholar
Moore, J. H., Noble, R. C. & Steele, W. (1969). Br. J. Nutr. 23, 141.CrossRefGoogle Scholar
Pan, Y. S., Scott, T. W. & Cook, L. J. (1972). J. Dairy Res. 39, 203.CrossRefGoogle Scholar
Parry, R. M., Sampugna, J. & Jensen, R. G. (1964). J. Dairy Sci. 47, 37.CrossRefGoogle Scholar
Reiser, R. (1951). Fedn Proc. Fedn Am. Socs exp. biol. 10, 236.Google Scholar
Robinson, D. S. (1970). In Comprehensive Biochemistry, Vol. 18, p. 51. (Eds Florkin, M. and Stotz., E. H.) Amsterdam: Elsevier Publishing Co.Google Scholar
Scott, T. W., Cook, L. J., Ferguson, K. A., McDonald, I. W., Loftus Hills, G. & Buchanan, R. A. (1970). Aust. J. Sci. 32, 291.Google Scholar
Scott, T. W., Cook, L. J. & Mills, S. C. (1971). J. Am. Oil Chem. Soc. 48, 358.CrossRefGoogle Scholar
Shorland, F. B., Weenink, R. O., Johns, A. T. & McDonald, I. R. C. (1957). Biochem. J. 67, 328.CrossRefGoogle Scholar
Storry, J. E. & Rook, J. A. F. (1964). Biochem. J. 91, 27C.CrossRefGoogle Scholar
Tove, S. B. & Mochrie, R. D. (1963). J. Dairy Sci. 46, 686.CrossRefGoogle Scholar
Wadsworth, J. C. (1968). J. Dairy Sci. 51, 1382.CrossRefGoogle Scholar
Ward, P. F. V., Scott, T. W. & Dawson, R. M. C. (1964). Biochem. J. 92, 60.CrossRefGoogle Scholar