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The effects of dietary soybean oil on milk-fat composition in the cow

Published online by Cambridge University Press:  01 June 2009

W. Steele ,
R. C. Noble  and
J. H. Moore
W. Steele
Affiliation:
The Hannah Dairy Research Institute, Ayr, Scotland
R. C. Noble
Affiliation:
The Hannah Dairy Research Institute, Ayr, Scotland
J. H. Moore
Affiliation:
The Hannah Dairy Research Institute, Ayr, Scotland
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Summary

The effects of the isocaloric replacement of starch in a low-fat concentrate mixture by 8% soybean oil on the yield and composition of milk fat were investigated in a feeding experiment with 6 cows in mid lactation. Two high-fat concentrate mixtures were given to the cows. In one the requisite amount of soybean oil was given by including 50% coarsely ground soybeans in the concentrate mixture. In the other an equal amount of soybean oil was added directly to the concentrate mixture. The concentrate mixtures were given with a high-roughage diet that supplied 5·5kg hay and 2·7kg of sugar-beet pulp/day.

When the 2 high-fat rations were given to the cows there were reductions in the percentages and yields of 10:0, 12:0, 14:0, 14:1, 16:0 and 16:1 fatty acids and increases in the concentrations and yields of 18:0, 18:1 and 18:2 fatty acids in the milk fat. The direct addition of the soybean oil to the diet also reduced the percentage and yield of 6:0 and 8:0 whilst the inclusion of the soybeans increased the percentage of 4:0 and the yields of 4: 0 and 6:0 in the milk fat.

When both high-fat rations were given to the cows there were increases in the yields and concentrations of as-9–18:1 in the milk fat, whilst inclusion of the soybean oil in the diet increased also the concentration and yield of trans-11–18:1.

The implications of these findings are discussed.

Type
Original Articles
Information
Journal of Dairy Research , Volume 38 , Issue 1 , February 1971 , pp. 49 - 56
Copyright
Copyright © Proprietors of Journal of Dairy Research 1971

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References

REFERENCES

Annison, E. F., Linzell, J. L., Fazakerley, S. & Nichols, B. W. (1967). Biochem. J. 102, 637.CrossRefGoogle Scholar
Becker, M. E. & Kumar, S. (1965). Biochemistry, Easton 4, 1839.CrossRefGoogle Scholar
Chang, T.-C. L. & Sweeley, C. C. (1962). J. Lipid Res. 3, 170.CrossRefGoogle Scholar
Cochran, W. G. & Cox, G. M. (1957). Experimental Designs, 2nd edn.London: John Wiley and Sons, Ltd.Google Scholar
Ganguly, J. (1960). Biochim. biophys. Acta 40, 110.CrossRefGoogle Scholar
Hibbitt, K. G. (1966). Biochim. biophys. Acta 116, 56.CrossRefGoogle Scholar
Holman, R. T. (1960). Am. J. clin. Nutr. 8, 403.CrossRefGoogle Scholar
Howanitz, P. J. & Levy, H. R. (1965). Biochim. biophys. Acta 106, 430.CrossRefGoogle Scholar
Hutton, K. & Seeley, R. C. (1966). Nature, Lond. 212, 1614.CrossRefGoogle Scholar
Kinsella, J. E. & Mccarthy, R. D. (1968). Biochim. biophys. Acta 164, 518.CrossRefGoogle Scholar
Moore, J. H. (1966). J. Soc. Dairy Technol. 19, 8.CrossRefGoogle Scholar
Moore, J. H., Noble, R. C., Steele, W. & Czerkawski, J. W. (1969). Br. J. Nutr. 23, 869.CrossRefGoogle Scholar
Moore, J. H. & Steele, W. (1968). Proc. Nutr. Soc. 27, 66.CrossRefGoogle Scholar
Moore, J. H. & Williams, D. L. (1966). Biochim. biophys. Acta 125, 352.CrossRefGoogle Scholar
Morris, L. J. (1966). J. Lipid Res. 7, 717.CrossRefGoogle Scholar
Noble, R. C., Steele, W. & Moore, J. H. (1969). J. Dairy Res. 36, 375.CrossRefGoogle Scholar
Smith, S. & Dils, R. (1966). Biochim. biophys. Acta 125, 435.CrossRefGoogle Scholar
Steele, W. & Moore, J. H. (1968). J. Dairy Res. 35, 223.CrossRefGoogle Scholar
Steele, W., Noble, R. C. & Moore, J. H. (1971). J. Dairy Res. 38, 43.CrossRefGoogle Scholar
Ward, P. F. V., Scott, T. W. & Dawson, R. M. C. (1964). Biochem. J. 92, 60.CrossRefGoogle Scholar
Williams, N. K., Cannon, C. Y. & Espe, D. (1939). J. Dairy Sci. 22, 442.Google Scholar