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The responses of high and medium merit dairy cows to diets differing in grass silage: concentrate ratios, during early lactation

Published online by Cambridge University Press:  05 November 2021

C.P. Ferris ,
F.J. Gordon ,
D.C. Patterson  and
C.S. Mayne
C.P. Ferris
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down N.Ireland BT26 6DR
F.J. Gordon
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down N.Ireland BT26 6DR
D.C. Patterson
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down N.Ireland BT26 6DR
C.S. Mayne
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down N.Ireland BT26 6DR
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Extract

The genetic merit of the UK dairy herd is increasing rapidly and this trend is likely to continue for the forseeable future. With cows of higher milk yield potential and higher nutrient requirements, feeding systems developed in the past with medium genetic merit animals, may now need to be adapted to meet the needs of high genetic merit animals if nutrition x genotype interactions exist. This would be particularly true to increasing proportion of concentrates in grass silage based diets. This study was undertaken to compare the milk yield responses of high and medium merit dairy cows.

Type
Milk Production 1
Information
Proceedings of the British Society of Animal Science , Volume 1996 , March 1996 , pp. 5
Copyright
Copyright © The British Society of Animal Science 1996

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