Hostname: page-component-848d4c4894-p2v8j Total loading time: 0.001 Render date: 2024-05-28T20:57:53.429Z Has data issue: false hasContentIssue false
  • English
  • Français

Carotene and immunoglobulin concentrations in the colostrum and milk of pasture-fed cows

Published online by Cambridge University Press:  01 June 2009

D. F. Newstead
D. F. Newstead
Affiliation:
New Zealand Dairy Research Institute, Private Bag, Palmerston North, New Zealand
Get access Rights & Permissions [Opens in a new window]

Summary

The carotene and immunoglobulin concentrations in colostra and milks of 6 Jersey, 4 Friesian and 6 Jersey × Friesian cows were determined during the first 21 d of lactation. Carotene concentrations of between 50 and 300 μg/g milk fat were found at first milking and these declined to normal concentrations, in the range 9–21 μg/g milk fat, by the eighth to tenth day of lactation. Immunoglobulin concentrations at first milking were in the range 4–40 g/l milk and decreased to normal concentrations, in the range 0·3–0·5 g/l, by the fifth to seventh day of lactation. For both substances the data from each cow's milk fitted an exponential decay model. The fractional rates of decrease in concentration of carotene were 0·19–0·57/d and of immunoglobulin were 0·40–0·73/d. Breed-group differences were observed in both carotene and immunoglobulin concentrations in milks after the fourteenth day of lactation. In Jersey milks, the average carotene and immunoglobulin concentrations were respectively 18·5 μg/g milk fat and 0·32 g/l of milk, while in Friesian milks the concentrations were respectively 11·4 μg/g milk fat and 0·46 g/l milk. There was also a difference between breed groups in the daily rates of decrease of the immunoglobulin concentrations. The average rate of decrease for the Friesians was about 1·5 times the rate for the Jerseys.

Type
Research Article
Information
Journal of Dairy Research , Volume 43 , Issue 2 , June 1976 , pp. 229 - 237
Copyright
Copyright © Proprietors of Journal of Dairy Research 1976

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

Anderson, R. R., Hindery, G. A., Parkash, V. & Turner, C. W. (1968). Journal of Dairy Science 51, 601.CrossRefGoogle Scholar
Barnicoat, C. R. (1947). Journal of Dairy Research 15, 80.Google Scholar
Basery-Mohamad, (1975). Thesis. Massey University.Google Scholar
Brandon, M. R., Watson, D. L. & Lascelles, A. K. (1971). Australian Journal of Experimental Biology and Medical Science 49, 613.CrossRefGoogle Scholar
British Standards Institution (1955). B.S. 696: 1955.Google Scholar
Butler, J. E. (1974). Lactation, vol. 3, p. 235. (Eds Larson, B. L. and Smith, V. R..) New York: Academic Press.Google Scholar
Dann, W. J. (1933). Biochemical Journal 27, 1998.CrossRefGoogle Scholar
Dixon, F. J., Weigle, W. O. & Vazquez, J. J. (1961). Laboratory Investigation 10, 216.Google Scholar
Doležálek, J. & Gajdušek, S. (1970). 18th International Dairy Congress, Sydney 1 E, 21.Google Scholar
Elliott, G. M. (1961). Journal of Dairy Research 28, 123.Google Scholar
Goulden, C. H. (1952). Methods of Statistical Analysis, p. 37, 2nd edn.New York: J. Wiley & Sons Inc.Google Scholar
Grieb, G. (1968 a). Archiv für Tierzucht 11, 151.Google Scholar
Grieb, G. (1968 b). Archiv für Tierzucht 11, 401.Google Scholar
Hansen, R. G., Phillips, P. H., Williams, J. W. & Smith, V. R. (1946). Journal of Dairy Science 29, 521.Google Scholar
Hopf, J. F. (1969). Thesis, Munich. In Dairy Science Abstracts 32, 67.Google Scholar
Jurenkova, G.,Popovici, D. & Răitaru, M. (1967). Lucrările Stiintifice, Institutul, de Cercetări Zootehnice 25, 261.Google Scholar
In Dairy Science Abstracts 30, 55.Google Scholar
Klaus, G. G. B., Bennett, A. & Jones, E. W. (1969). Immunology 16, 293.Google Scholar
Koshi, J. H. & Petersen, W. E. (1955). Journal of Dairy Science 38, 788.Google Scholar
Kruse, V. (1970). Animal Production 12, 619.Google Scholar
Larson, B. L. & Kendall, K. A. (1957). Journal of Dairy Science 40, 377.CrossRefGoogle Scholar
McDowell, A. K. R. (1956). Journal of Dairy Research 23, 111.Google Scholar
Newstead, D. F. & Ormsby, J. E. (1970). New Zealand Journal of Dairy Science and Technology 5, 32.Google Scholar
Parrish, D. B., Wise, G. H., Atkeson, F. W. & Hughes, J. S. (1949). Journal of Dairy Science 32, 209.Google Scholar
Smith, E. L. (1946). Journal of Biological Chemistry 164, 345.Google Scholar
Snedecor, G. W. & Cochran, W. G. (1967). Statistical Methods, 6th edn.Ames: Iowa State University Press.Google Scholar
Sutton, T. S., Kaeser, H. E. & Soldner, P. A. (1945). Journal of Dairy Science 28, 933.CrossRefGoogle Scholar
Thompson, S. Y., Henry, K. M. & Kon, S. K. (1964). Journal of Dairy Research 31, 1.CrossRefGoogle Scholar
Thompson, S. Y. & McGillivray, W. A. (1957). Journal of Dairy Research 24, 108.Google Scholar
Williams, E. J. (1959). Regression Analysis. New York: J. Wiley & Sons.Google Scholar