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531. The influence of live weight on milk production during the first lactation

Published online by Cambridge University Press:  01 June 2009

G. L. Bailey  and
W. H. Broster
G. L. Bailey
Affiliation:
National Institute for Research in Dairying, University of Reading
W. H. Broster
Affiliation:
National Institute for Research in Dairying, University of Reading
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Extract

The relationship between live weight and lactation production was examined; records from ninety-nine animals, daughters of seven bulls, were used.

A positive relationship was found to exist within each of the seven groups and within the entire population.

The relationship did not exist between the mean values of the group.

No correlation was found between the live weights at calving of forty-seven dam/daughter pairs; the daughters were the offspring of six bulls.

It was shown that a herd breeding policy which selected animals according to their size would fail, except by chance, to improve the production of the herd.

Type
Original Articles
Information
Journal of Dairy Research , Volume 21 , Issue 1 , February 1954 , pp. 5 - 9
Copyright
Copyright © Proprietors of Journal of Dairy Research 1954

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References

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