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An examination of the effect of concentrate energy source and changes in eRDP:DUP ratio on milk production of dairy cows offered grass silages differing in digestibility and intake characteristics

Published online by Cambridge University Press:  05 November 2021

T.W.J. Keady ,
C.S. Mayne  and
M. Marsden
T.W.J. Keady
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down BT26 6DR, Northern Ireland
C.S. Mayne
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down BT26 6DR, Northern Ireland
M. Marsden
Affiliation:
J. Bibby Agriculture Limited, ABN House, Oundle Road, Woodston, Peterborough PE2 9QF, United Kingdom
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Extract

Results from a previous study at this Institute indicated that concentrate energy source did not alter silage intake or animal performance of lactating dairy cows offered a range of grass silages of similar digestibility but differing in intake characteristics. Digestibility is probably the single most important variable affecting animal performance from grass silage. The present study was undertaken to examine the effects of concentrate energy source and effective rumen degradable protein (eRDP):digestible undegradable protein (DUP) ratio in the concentrate on the silage intake of, and animal performance from, lactating dairy cows offered a diverse range of grass silages differing in digestibility and intake characteristics.

Type
Programme
Information
Proceedings of the British Society of Animal Science , Volume 1997 , 1997 , pp. 9
Copyright
Copyright © British Society of Animal Science 1997

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