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Estimation of genetic parameters for temperament and ease of milking assessed on a linear scale in friesian holstein heifers

Published online by Cambridge University Press:  24 November 2017

H J Bellamy  and
G J T Swanson
H J Bellamy
Affiliation:
Milk Marketing Board, Thames Ditton, Surrey KT7 0EL
G J T Swanson
Affiliation:
Milk Marketing Board, Thames Ditton, Surrey KT7 0EL
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Extract

Following the introduction of the linear assessment method of evaluating conformation within the Dairy Progeny Testing Scheme run by the Artificial Insemination Organisation (now Genus) of the Milk Marketing Board in 1983 three new traits were included in 1985 and 1986. The new traits were Temperament, Ease of Milking and Fore Udder Angle. In addition information was collected on the number of hours since milked when the classification was carried out.

The objective of this study was to establish whether the variation in linear scores was significantly affected by the number of hours since milked and also to estimate the phenotypic and genetic parameters for the new trails, in particular Temperament and Ease of Milking.

Type
Dairy Cattle Breeding
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1991 , March 1991 , pp. 167
Copyright
Copyright © The British Society of Animal Production 1991

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References

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