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Genotype by nutrition interactions from Langhill dairy cows in three lactations

Published online by Cambridge University Press:  20 November 2017

J.E. Pryce
Affiliation:
Animal Biology Division, Scottish Agricultural College, West Mains Road, Edinburgh EH9 3JG, UK
G. Simm
Affiliation:
Animal Biology Division, Scottish Agricultural College, West Mains Road, Edinburgh EH9 3JG, UK
R.F. Veerkamp
Affiliation:
ID-DLO, Edelhertweg, Lelystad, The Netherlands
J.D. Oldham
Affiliation:
Animal Biology Division, Scottish Agricultural College, West Mains Road, Edinburgh EH9 3JG, UK
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Extract

The economic pressures on the dairy industry may force more farmers to consider reducing the amount of concentrates fed to cows in order to keep costs down. We have been testing whether the long-term performance of daughters of sires progeny tested in high concentrate systems maintain their advantage over cows of average genetic merit when managed in a lower input feeding system. This paper extends the scope of our initial report (Chalmers et al., 1997) and includes data on reproductive performance.

Data were from Holstein-Friesian cows managed at the Langhill Dairy Cattle Research Centre. Sires of the Selection (S) line are among the highest available in the UK for predicted transmitting abilities of weight of fat plus protein (PTA F+P). Sires of Control (C) line cows are about UK average for PTA F+P.

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Copyright
Copyright © The British Society of Animal Science 1999

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References

Chalmers, J.S., Veerkamp, R.F., Parkinson, H., McGinn, R., Simm, G. and Oldham, J.D. (1997) Genotype by diet and lactation interactions for yield, dry matter intake, condition score in dairy cows. Proceedings of the British Society of Animal Science, Scarborough (p39).Google Scholar