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Influence of Genetic Merit on 305-day Milk Production of Dairy Cattle on Commercial Farms at Three Levels of Feeding

Published online by Cambridge University Press:  20 November 2017

H.C.F. Wicks  and
J.D. Leaver
H.C.F. Wicks
Affiliation:
Department of Agricultural Sciences, Imperial College, Wye, Ashford, Kent TN25 5AH
J.D. Leaver
Affiliation:
Department of Agricultural Sciences, Imperial College, Wye, Ashford, Kent TN25 5AH
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Extract

The objective was to estimate the influence of genetic merit on milk production at different levels of concentrate feeding. The presence of an interaction between genetic merit and level of feeding would mean that cows with a high potential for milk production are unable to express their potential under all conditions. Oldham and Simm, (1998) showed there was a significant interaction between level of concentrate feeding and PTAf+p under experimental conditions, and that the milk yield response to genetic merit increased with increased concentrate feeding. The current work estimated the value of genetic merit (PIN95 and PTAf+p) on 305-day milk production traits of dairy cattle on commercial farms, where farms were categorised by the level of concentrate (Cg) fed.

Type
Theatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2002 , 2002 , pp. 14
Copyright
Copyright © The British Society of Animal Science 2002

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References

Oldham, and Simm, , (1998), The Langhill Dairy Research Centre. Journal of the Royal Agricultural Society of England 159: 94–106.Google Scholar