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Extraction of plasma triacylglycerols by the mammary gland of the lactating cow

Published online by Cambridge University Press:  01 June 2009

Gordon E. Thompson  and
William W. Christie
Gordon E. Thompson
Affiliation:
Hannah Research Institute, Ayr KA6 5HL, UK
William W. Christie
Affiliation:
Hannah Research Institute, Ayr KA6 5HL, UK
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Summary

The fatty acid content of triacylglycerols (TG) in arterial and mammary venous blood plasma has been analysed in five cows that were close to peak lactation. The fatty acids in arterial TG were extracted by the mammary gland in amounts 14:0 < 16:0 < 18:0and 18:0 > 18:1n – 9 > 18:2. The difference of extraction between palmitate and stearate was similar in different TG species. The fatty acid 18:1n – 7, which was largely the trans isomer, was extracted more than 18:1n – 9. Significant amounts of phytanic acid were acylated in plasma TG, but not extracted by the mammary gland.

Type
Original Articles
Information
Journal of Dairy Research , Volume 58 , Issue 3 , August 1991 , pp. 251 - 255
Copyright
Copyright © Proprietors of Journal of Dairy Research 1991

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References

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