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The effect of frequency of feeding on milk secretion in the Ayrshire cow

Published online by Cambridge University Press:  01 June 2009

P. C. Thomas  and
Morag E. Kelly
P. C. Thomas
Affiliation:
The Hannah Research Institute, Ayr, Scotland, KA6 5HL
Morag E. Kelly
Affiliation:
The Hannah Research Institute, Ayr, Scotland, KA6 5HL
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Summary

Four Ayrshire cows in their second lactation were used in a 4×4 Latin square experiment to determine the effects of frequency of feeding on milk secretion. The animals were given a diet consisting of hay, sugar-beet pulp and dairy concentrates (34·9:19·7:45·5 on a dry-matter basis) either in 2 equal meals/d at 07.00 and 17.00 h or with the hay in 4 meals at 07.00, 12.00, 17.00 and 22.00 h and the sugar-beet pulp and concentrates in 24-h meals. Each feeding frequency was tested at 2 levels of feeding providing either 100 or 80% of the standard requirements for energy.

There were no significant effects of frequency of feeding on milk yield or on the milk content of fat, protein, lactose, solids-not-fat or total solids, but underfeeding depressed the yield of milk and of all milk constituents. Neither the frequency nor level of feeding had appreciable effects on the fatty-acid composition of the milk fat or on the blood glucose concentration, but in animals fed frequently plasma urea levels were lower than in animals fed twice daily and there was no postprandial peak in urea concentration.

Type
Research Article
Information
Journal of Dairy Research , Volume 43 , Issue 1 , February 1976 , pp. 1 - 7
Copyright
Copyright © Proprietors of Journal of Dairy Research 1976

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References

REFERENCES

Agricultural Development and Advisory Service (1972). A.D.A.S. Joint Conference on Nutrient Standards for Ruminants, p. 20. London: Ministry of Agriculture, Fisheries and Food.Google Scholar
Armstrong, D. G. (1968). Proceedings of the Nutrition Society 27, 57.CrossRefGoogle Scholar
Armstrong, D. G. & Prescott, J. H. D. (1971). In Lactation (Proceedings 17th Easter School in Agricultural Science, University of Nottingham 1970) p. 349. (Ed. Falconer, I. R..) London: Butterworths.Google Scholar
Burt, A. W. A. (1957). Dairy Science Abstracts 19, 436.Google Scholar
Campbell, J. R. & Merilan, C. P. (1961). Journal of Dairy Science 44, 664.CrossRefGoogle Scholar
Christopherson, S. W. & Glass, R. L. (1969). Journal of Dairy Science 52, 1289.CrossRefGoogle Scholar
Dawson, J. R. & Kopland, D. V. (1949). United States Department of Agriculture Circular No. 830, p. 1 (see Campbell & Merilan, 1961).Google Scholar
Dawson, R. R. & Rook, J. A. F. (1972). Journal of Dairy Research 39, 107.CrossRefGoogle Scholar
Grimbleby, F. H. (1956). Journal of Dairy Research 23, 229.CrossRefGoogle Scholar
Kaufmann, W. (1973). Kieler Milchwirtschaftliche Forschungsberichte 25, 245.Google Scholar
Lewis, D. (1961). In Digestive Physiology and Nutrition of the Ruminant (Proceedings 7th Easter School in Agricultural Science, University of Nottingham 1960) p. 127. (Ed. Lewis, D..) London: Butterworths.Google Scholar
Linzell, J. L. (1974). In Lactation 1, 143. (Ed. Larson, B. L. and Smith, V. R..) London: Academic Press.Google Scholar
Minson, D. J. & Cowper, J. L. (1966). British Journal of Nutrition 20, 757.CrossRefGoogle Scholar
Mochrie, R. D., Thomas, W. E. & Lucas, H. L. (1956). Journal of Animal Science, 15, 1256.Google Scholar
Payne, J. M., Dew, S. M. & Manston, R. (1971). In Lactation (Proceedings 17th Easter School in Agricultural Science, University of Nottingham 1970), p. 413. (Ed. Falconer, I. R..) London: Butterworths.Google Scholar
Rook, J. A. F. (1961). Dairy Science Abstracts 23, 251.Google Scholar
Rook, J. A. F. & Balch, C. C. (1961). British Journal of Nutrition 15, 361.CrossRefGoogle Scholar
Rook, J. A. F., Balch, C. C. & Johnson, V. W. (1965). British Journal of Nutrition 19, 93.CrossRefGoogle Scholar
Rook, J. A. F. & Campling, R. C. (1965). Journal of Dairy Research 32, 45.CrossRefGoogle Scholar
Rook, J. A. F. & Line, C. (1961). British Journal of Nutrition 15, 109.CrossRefGoogle Scholar
Snedecor, G. W. (1956). Statistical Methods, 5th Edn.Ames, Iowa: Iowa State University Press.Google Scholar
Stobbs, T. H. & Brett, D. J. (1974). Australian Journal of Agricultural Research 25, 657.CrossRefGoogle Scholar
Wright, J. A., Rook, J. A. F. & Wood, P. D. P. (1974). Journal of Dairy Research 41, 155.CrossRefGoogle Scholar