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The Variations in milk yields caused by season of the year, service, age, and dry period, and their climination: Part III. Age

Published online by Cambridge University Press:  27 March 2009

H. G. Sanders
H. G. Sanders
Affiliation:
Institute of Animal Nutrition, School of Agriculture, Cambridge.
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Extract

Age, it will be remembered, is here measured in lactations, but little error is involved if the true age in years, at the commencement of the lactation, is taken as two more than the number of the lactation—e.g. a cow, on the average, calves her third calf when she is roughly 5 years old.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 18 , Issue 1 , January 1928 , pp. 46 - 67
Copyright
Copyright © Cambridge University Press 1928

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References

REFERENCES

(1)Gowen, (1924). Milk Secretion. Baltimore.Google Scholar
(2)Turner, (1925). The Relation between Age, Weight, and Fat Production in Dairy Cows. Mo. Exp. Sta. Bull. 221.Google Scholar
(3)Van, Wagenen (1922). The Cow. New York. P. 110.Google Scholar
(4)Zwagerman, (1925). De Oorzaken voor Variaties in de Melkopbrengsten. Off. Org. van der Algemeen Nederlandschen Zuivelbond, No. 1009.Google Scholar