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Adaptation to the digestion of non-starch polysaccharide in growing pigs fed on cereal or semi-purified basal diets

Published online by Cambridge University Press:  09 March 2007

A. C. Longland ,
A. G. Low ,
D. B. Quelch  and
S. P. Bray
A. C. Longland
Affiliation:
AFRC Institute for Grassland and Animal Production, Pig Division, Shinfeld, Reading RG2 9AQ, Berks
A. G. Low
Affiliation:
AFRC Institute for Grassland and Animal Production, Pig Division, Shinfeld, Reading RG2 9AQ, Berks
D. B. Quelch
Affiliation:
AFRC Institute for Grassland and Animal Production, Pig Division, Shinfeld, Reading RG2 9AQ, Berks
S. P. Bray
Affiliation:
AFRC Institute for Grassland and Animal Production, Pig Division, Shinfeld, Reading RG2 9AQ, Berks
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Abstract

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Pigs (25–45 kg) were fed on either cereal or semi-purified basal diets supplemented with either high or low levels of sugar-beet pulp or wood cellulose (Solka-floc). The apparent digestibility and retention of N and apparent digestibility and metabolizability of energy (GE) and the apparent digestibility of non-starch polysaccharides (NSP) and their constituent monomers were measured during weeks 2, 4 and 6 of the trial. N and GE were less well-digested, retained or metabolized from cereal basal diets than from the corresponding semi-purified diets during all three periods. NSP from sugar-beet pulp was highly digestible, unlike that from Soka-floc which was relatively poorly digested. These differences of NSP digestibility were seen more clearly when incorporated in semi-purified diets. There was no significant increase in the digestibility or retention of N, or digestibility or metabolizability of GE, or in the digestibility of sugar-beet pulp NSP with increasing time-period on the diets. In contrast, the digestibility of Solka-floc NSP tended to increase with the time-period. The digestibility of NSP from the semi-purified diet with the high level of Solka-floc inclusion was much lower than that for the low level of inclusion, indicating that microbial activity had been reduced. In conclusion, adaptation to the diets in terms of N and GE balance may be complete after 1 week, but 3–5 weeks may be necessary before stability of measurements of the digestibility of resistant NSP monomers can be obtained.

Keywords

Non-starch polysaccharidesDigestibilityPigs
Type
Gastro-Intestinal Effects of Diets Containing Complex Caebohydrates
Information
British Journal of Nutrition , Volume 70 , Issue 2 , September 1993 , pp. 557 - 566
Copyright
Copyright © The Nutrition Society 1993

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