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42. The Yield and Composition of Milk with Special Reference to the Influence of Climatic Conditions and other Factors

Published online by Cambridge University Press:  01 June 2009

J. Houston  and
R. W. Hale
J. Houston
Affiliation:
Ministry of Agriculture (Northern Ireland), Queen's University, Belfast
R. W. Hale
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down.
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Extract

This article records the preliminary results of an investigation of some of the causes of the variations in the yield and composition of milk. The influence of the season of the year, and the influence of climatic conditions on the average yield and composition of the milk of a herd, are discussed.

The relationships between the data are studied by means of simple corre-lation and also by means of partial correlation. The temperatures used are the average temperatures for the periods between the milkings. Thus the day-temperature is the average temperature of the interval between the morning and evening milking, and the night temperature is the average temperature of the interval between the evening milking and the next morning milking. The daily temperature is the average of these two temperatures.

Type
Research Article
Information
Journal of Dairy Research , Volume 3 , Issue 3 , May 1932 , pp. 294 - 309
Copyright
Copyright © Proprietors of Journal of Dairy Research 1932

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References

REFERENCES

(1)Gowen, J. W. (1924). Milk Secretion, p. 82.Google Scholar
(2)Tocher, J. F. (1925). Variations in the Composition of Milk, p. 84.Google Scholar
(3)Bartlett, S. (1929). J. Agric. Sci. 19, 438.CrossRefGoogle Scholar
(4)Ragsdale, A. C. and Brody, S. (1922). J. Dairy Sci. 5, 213.Google Scholar
(5)Hayes, W. P. (1926). J. Dairy Sci. 9, 219.CrossRefGoogle Scholar
(6)Weaver, E. and Matthews, C. A. (1928). Iowa State Col. Res. Bull. No. 107.Google Scholar
(7)Lloyd, F. J. (1916). J. Brit. Dairy Farmers’ Assoc. 30, 71.Google Scholar
(8)Campbell, K. W. D. (1931). J. Agric. Sci. 21, 167.CrossRefGoogle Scholar
(9)Bender, C. B. (1929). Exp. Sta. Bee. 61, 765.Google Scholar