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The response of January/February calving british friesian cows to level of protein supplementation

Published online by Cambridge University Press:  21 November 2017

A Reeve ,
R D Baker  and
R G Hodson
A Reeve
Affiliation:
Imperial Chemical Industries PLC, Jealotts Hill Research Station, Nr Bracknell, Berkshire, RG12 6EY
R D Baker
Affiliation:
Animal and Grassland Research Institute, Hurley, Mr Maidenhead, Berkshire, SL6 5LR
R G Hodson
Affiliation:
Imperial Chemical Industries PLC, Ravenscroft Hall Farm, Byley, Middlewich, Cheshire, CW10 9LE
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Extract

There has been much recent debate about the protein requirements of lactatinq dairy cows, and this issue has been heightened by a general reduction in concentrate feeding in response to the imposition of milk quotas. Furthermore, the value of silage as a source of protein has been questioned widely. The objective of the present trial was to determine the effect of increasing supplementary protein on the performance of cows with ad libitum access to high quality grass silage.

The trial, using January/February calving British Frieslan cows in second or subsequent lactations, was performed at Ravenscroft Hall Farm, Middlewich, Cheshire. Four groups of 15 cows were offered either 3 or 6 kg/head/day of cereal/soya/fishmeal based compound feeds containing either 214 (L) or 403 (H) g CP/kg DM, and high quality grass silage ad libitum.

Type
Dairy Cow Feeding
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1986 , March 1986 , pp. 8
Copyright
Copyright © The British Society of Animal Production 1986

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