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Genotype by diet interactions for liveweight and condition score during lactation in heifers

Published online by Cambridge University Press:  05 November 2021

E.P.C. Koenen  and
R.F. Veerkamp
E.P.C. Koenen
Affiliation:
Department of Animal Breeding, Wageningen Institute of Animal Sciences, Wageningen Agricultural University, P.O.Box 338, 6700 AH Wageningen, The Netherlands
R.F. Veerkamp
Affiliation:
Genetics and Behavioural Sciences, SAC Edinburgh, West Mains Road, Edinburgh EH9 3JG, Scotland
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Extract

An earlier study at Langhill (Veerkamp et al, 1995) showed that selection for yield in dairy cows increases body tissue mobilisation during lactation, since high genetic merit animals had a lower average condition score (CS) compared with low genetic merit animals. However, in this study no diet effect for condition score and no interaction between diet and genetic merit was found. The reasons for this might have been that average condition scores during lactation were analysed, and therefore the objective of this study was to evaluate the effects of genotype and diet during lactation using weekly observations.

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Programme
Information
Proceedings of the British Society of Animal Science , Volume 1997 , 1997 , pp. 38
Copyright
Copyright © British Society of Animal Science 1997

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References

SAS, 1988. Users guide: Statistics, Release 6.03. SAS, Inst., Inc. Cary, NC.Google Scholar
Veerkamp, R.F., Simm, G. and Oldham, J.D. 1995. Genotype by environment interaction - experience from Langhill. BSAS Occasional publication, Greenmount College, Northern Ireland, 1-2 November, p. 59–66.Google Scholar