Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-03T05:32:49.305Z Has data issue: false hasContentIssue false
  • English
  • Français

Hour-to-hour variation in amino acid arterio-venous concentration differences across the lactating goat mammary gland

Published online by Cambridge University Press:  01 June 2009

T. B. Mepham  and
J. L. Linzell
T. B. Mepham
Affiliation:
University of Nottingham, Faculty of Agricultural Science, Sutton Bonington, Loughborough, LE12 5RD
J. L. Linzell
Affiliation:
A.B.C. Institute of Animal Physiology, Babraham, Cambridge
Get access Rights & Permissions [Opens in a new window]

Summary

Arterio-venous (AV) blood plasma concentration differences of amino acids across the mammary glands of 2 lactating goats were measured at intervals throughout a day. One gland of each animal had been transplanted to the neck for experimental purposes. The variation throughout the day in arterial concentration of all amino acids was similar. The variation in AV differences was slight for most essential amino acids, greater for glutamic acid and proline and very marked for aspartic acid, alanine, glycine and citrulline. There was no statistical difference between the AV difference of any amino acid measured simultaneously across the 2 glands of either goat. The arterial concentrations of certain pairs of amino acids were significantly correlated. The implications of the results for estimation of rates of amino-acid synthesis in the mammary gland using the intra-arterial infusion technique are discussed.

Type
Research Article
Information
Journal of Dairy Research , Volume 41 , Issue 1 , February 1974 , pp. 95 - 100
Copyright
Copyright © Proprietors of Journal of Dairy Research 1974

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

Franklin, D. L., Schlegel, W. A. & Watson, N. W. (1963). Biomedical Sciences Instrumentation 1, 309.Google Scholar
Linzell, J. L. (1960). Journal of Physiology 153, 492.Google Scholar
Linzell, J. L. (1963). Quarterly Journal of Experimental Physiology 48, 34.Google Scholar
Linzell, J. L. (1967). Journal of Physiology 190, 333.CrossRefGoogle Scholar
Linzell, J. L. & Mepham, T. B. (1968). Biochemical Journal 107, 18–19P.Google Scholar
Linzell, J. L. & Mepham, T. B. (1974). Journal of Dairy Research 41, 101.Google Scholar
Mepham, T. B. (1967). Thesis, University of London.Google Scholar
Mepham, T. B. (1971). Proceedings of the 17th Easter School in Agricultural Science, University of Nottingham, 1970. Lactation, p. 297. (Ed. Falconer, I. R..) London: Butterworths.Google Scholar
Mepham, T. B. & Linzell, J. L. (1966). Biochemical Journal 101, 76.CrossRefGoogle Scholar
Mepham, T. B. & Linzell, J. L. (1967). Nature 214, 507.Google Scholar
Mepham, T. B. & Linzell, J. L. (1974). Journal of Dairy Research 41, 111.Google Scholar
Verbeke, R., Roets, E. & Peeters, G. (1972). Journal of Dairy Research 39, 355.Google Scholar