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Some effects of including differently processed barley in the diet of the growing pig: 2. In vivo gastric pH changes

Published online by Cambridge University Press:  02 September 2010

T. L. J. Lawrence
T. L. J. Lawrence
Affiliation:
University of Liverpool, Faculty of Veterinary Science, Veterinary Field Station, Neston, Wirral, Cheshire, L64 ITE
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Summary

1. In vivo gastric pH changes were studied, in 6 pigs fitted with permanent gastric cannulae, under ‘basal conditions’ (i.e. when no food was given) and when diets containing 85% of differently processed barley were given either twice daily or at frequent intervals of time in an attempt to simulate ad libitum feeding systems. Before inclusion in the diet the 85% of barley had either received no processing (i.e. was given as the whole grain) or had been processed in one of the five following ways: (a) ground through a (1·56 mm) screen (b) ground through a (4·68 mm) screen (c) ground through a (9·36 mm) screen (d) coarsely crimped (e) cold rolled.

2. Relative to the ‘basal’ determinations the systems of feeding which gave food at frequent intervals of time induced higher overall mean pH values than did those which gave food twice daily, while between the six differently processed diets those containing the smaller particles of barley tended to give higher overall mean pH values than did those containing the coarser particles.

3. The validity of the results is discussed in the context of the techniques used and some possible implications in terms of animal health are briefly discussed.

Type
Research Article
Information
Animal Production , Volume 12 , Issue 1 , February 1970 , pp. 151 - 163
Copyright
Copyright © British Society of Animal Science 1970

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References

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