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A model of the energy system of lactating and pregnant cows

Published online by Cambridge University Press:  02 September 2010

J. M. Bruce ,
P. J. Broadbent  and
J. H. Topps
J. M. Bruce
Affiliation:
Scottish Farm Buildings Investigation Unit, Craibstone, Bucksburn, Aberdeen, AB2 9TR
P. J. Broadbent
Affiliation:
Scottish Farm Buildings Investigation Unit, Craibstone, Bucksburn, Aberdeen, AB2 9TR
J. H. Topps
Affiliation:
North of Scotland College of Agriculture, 581 King Street, Aberdeen AB9 1UD
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Abstract

1. A deterministic model and computer program of the energy system of lactating and pregnant cows have been developed.

2. Input data for cow, nutritional, management and environmental factors are required.

3. The output of milk production, live weight and heat production is a time series, with a weekly time-step.

4. Suckler and dairy cow examples are given to illustrate the use of the model to evaluate the effects of quality, quantity and pattern of food intake, and shelter.

Type
Research Article
Information
Animal Production , Volume 38 , Issue 3 , June 1984 , pp. 351 - 362
Copyright
Copyright © British Society of Animal Science 1984

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References

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