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Interrelationships between physical and metabolic control of voluntary food intake in fattening, pregnant and lactating mature sheep: a model

Published online by Cambridge University Press:  02 September 2010

J. M. Forbes
Affiliation:
Department of Animal Physiology and Nutrition, University of Leeds, Leeds LS2 9JT
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Summary

A model has been developed in which the voluntary food intake of sheep is related directly to metabolizable energy requirements unless physical or endocrine limitations intervene.

Although no ‘set point’ for body weight or body fat is incorporated in the model, mature sheep offered food ad libitum are predicted to reach eventually a plateau of body weight due to progressive depression of gut capacity by the increasing volume of abdominal fat. The final body weight is proportional to the digestibility of the diet. During pregnancy and lactation metabolic, physical and endocrine factors interact in such a way as to give predicted patterns of feed intake similar to those observed in practice with several qualities of diet.

Type
Research Article
Copyright
Copyright © British Society of Animal Science 1977

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References

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