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Title: The control and prediction of the voluntary food intake of pigs fed poor quality foods
Author: Whittemore, Emma Christine
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 2002
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The purpose of this thesis was to investigate, in a series of four experiments, the factors that are important for the control and prediction of die voluntary food intake of growing pigs fed poor quality foods. The aim of experiments 1 and 2 was to provide a severe test of two current conceptual frameworks available for die understanding and prediction of food intake. Framework 1 assumes that intake will be that which allows genetic performance to be achieved. If this is not achieved then it is assumed to be because mere is a constraint to food intake (e.g. the bulk content of the food) operating. Framework 2 sees intake as being a consequence of a process of optimisation, such that biological efficiency (rate of net energy ingested per litre of oxygen consumed) is maximised. The experiments tested areas where the frameworks differed in their predictions of intake on poor quality foods. Experiment 1 tested the effect of ambient temperature on die intake of foods of differing bulk content, experiment 2 tested the effect of a period of reduced growth on die subsequent intake of foods of differing bulk content. The results of both experiments were in closer agreement with the predictions of framework 1. It was concluded that die results provided no evidence that the idea that intake on poor quality foods in young growing pigs is constrained by gut capacity should be rejected. Experiment 3 investigated die effect of giving foods of differing bulk content on die short term feeding behaviour (STFB) of growing pigs. It was expected that differences in bulk content between die foods would result in different levels of intake mat would be reflected as differences in STFB.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available