Hostname: page-component-77c89778f8-vpsfw Total loading time: 0 Render date: 2024-07-19T07:09:03.194Z Has data issue: false hasContentIssue false
  • English
  • Français

Size distribution of fat globules in cow's milk during milking, measured with a Coulter counter

Published online by Cambridge University Press:  01 June 2009

Elizabeth A. Kernohan  and
E. E. Lepherd
Elizabeth A. Kernohan
Affiliation:
Dairy Research Foundation, University Farms, Camden, N.S.W., Australia
E. E. Lepherd
Affiliation:
Rural Veterinary Centre, University of Sydney, Camden, N.S.W., Australia
Get access Rights & Permissions [Opens in a new window]

Summary

A Coulter counter was used to measure the diameters and numbers of fat globules in serial samples taken during a single milking of each of 8 cows. Milk fat percentages of samples were estimated by the Babcock method. The average globule diameter, globule number and fat percentage all increased during milking. Regression analyses indicated that fat percentage was a stronger function of fat globule diameter than of globule number. The results are discussed with relation to the rise in fat percentage that occurs during milking.

Type
Original Articles
Information
Journal of Dairy Research , Volume 36 , Issue 2 , June 1969 , pp. 177 - 182
Copyright
Copyright © Proprietors of Journal of Dairy Research 1969

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

Babcock, S. M. (1885). Rep. N.Y. St. agric. Exp. Stn no. 4, p. 226. (Cited by Campbell, 1932.)Google Scholar
Bitting, A. W. (1905). Circ. Bur. Anim. Ind. U.S. Dep. Agric. no. 75.Google Scholar
Campbell, M. H. (1932). Bull. Vt agric. Exp. Stn no. 341.Google Scholar
Collier, P. (1891). Rep. N.Y. St. agric. Exp. Stn no. 10, p. 129.Google Scholar
Cornell, D. G. & Pallansch, M. J. (1966). J. Dairy Sci. 49, 1371.CrossRefGoogle Scholar
Coulter, W. H. (1956). Proc. natn. Electronics Conf. 12, 1034.Google Scholar
Davis, J. G. (1959). Milk Testing (2nd edn.). London: Dairy Industries Ltd.Google Scholar
Johansson, I. (1952). Acta Agric. scand. 2, 82.CrossRefGoogle Scholar
Mattern, C. F. T., Brackett, F. S. & Olson, B. J. (1957). J. appl. Physiol. 10, 56.CrossRefGoogle Scholar
Phipps, L. W. & Newbould, F. H. S. (1966). J. Dairy Res. 33, 51.CrossRefGoogle Scholar
Schalm, O. W. & Noorlander, D. O. (1957). J. Am. vet. med. Ass. 130, 199.Google Scholar
Ullrich, O. A. (1960). Instr. Soc. of Amer. Conf. N.Y.Google Scholar
Van Dam, W. & Sirks, H. A. (1922). Versl. landb. Onderz. 26, 106. (Cited by Webb & Johnson, 1965.)Google Scholar
Van Leeuwenhoeck, A. (1674). Phil. Trans. R. Soc. 9, 102. (Cited by Campbell, 1932.)Google Scholar
Webb, B. H. & Johnson, A. H. (eds.) (1965). Fundamentals of Dairy Chemistry. U.S.A.: Avi Publishing Co. Inc.Google Scholar
Whittlestone, W. G. (1952). J. Dairy Res. 19, 127.CrossRefGoogle Scholar
Whittlestone, W. G. (1953). J. Dairy Res. 20, 146.CrossRefGoogle Scholar
Whittlestone, W. G. (1954). J. Dairy Res. 21, 50.CrossRefGoogle Scholar
Whittlestone, W. G. (1958). Indian J. Dairy Sci. 11, 43.Google Scholar
Whittlestone, W. G. (1962). Aust. J. Dairy Technol. 17, 108.Google Scholar
Whittlestone, W. G. & Perrin, D. R. (1954). J. Dairy Res. 21, 20.Google Scholar
Woods, C. D. (1905). Circ. Bur. Anim. Ind. U.S. Dep. Agric. no. 75.Google Scholar