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Studies in milk secretion based on the variations and yields of milk and butter fat produced at morning and evening milkings

Published online by Cambridge University Press:  27 March 2009

S. Bartlett
S. Bartlett
Affiliation:
(National Institute for Research in Dairying, University of Reading.)
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Extract

1. Material is presented which shows month by month the lactation yields of cows in respect of milk and fat. Morning and evening yields are treated separately and differences in relative proportions found.

2. Smaller proportions of milk and of fat at the morning milkings are yielded in early lactation by all cows, but this point is most pronounced in heifers and also in heavy yielding cows with relatively small udders. It is suggested that with such animals reabsorption of milk occurs during a long night interval.

3. Seasonal variations in yield of milk and fat are shown. It is found that the morning milking does not respond as much as the evening milking to the stimulus to secretion which functions during May and June.

4. The quality of milk at different seasons of the year is discussed.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 19 , Issue 1 , January 1929 , pp. 36 - 47
Copyright
Copyright © Cambridge University Press 1929

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References

REFERENCES

(1)Sanders, H. G.Variation in Milk Yields and their Elimination. J. Agric. Sci. (1927), 17, 374.Google Scholar
(2)Tocher, Variations in the Composition of Milk. Edinburgh, p. 83.Google Scholar