Soluble arabinoxylan alters digesta flow and protein digestion of red meat-containing diets in pigs

Zhang, Dagong, Williams, Barbara A., Mikkelsen, Deirdre, Li, Xiuhua, Keates, Helen L., Lisle, Allan T., Collins, Helen M., Fincher, Geoffrey B., Bird, Anthony R., Topping, David L., Gidley, Michael J. and Bryden, Wayne L. (2015) Soluble arabinoxylan alters digesta flow and protein digestion of red meat-containing diets in pigs. Nutrition, 31 9: 1141-1147. doi:10.1016/j.nut.2015.03.006

Author Zhang, Dagong
Williams, Barbara A.
Mikkelsen, Deirdre
Li, Xiuhua
Keates, Helen L.
Lisle, Allan T.
Collins, Helen M.
Fincher, Geoffrey B.
Bird, Anthony R.
Topping, David L.
Gidley, Michael J.
Bryden, Wayne L.
Title Soluble arabinoxylan alters digesta flow and protein digestion of red meat-containing diets in pigs
Journal name Nutrition   Check publisher's open access policy
ISSN 0899-9007
Publication date 2015-09
Sub-type Article (original research)
DOI 10.1016/j.nut.2015.03.006
Open Access Status Not yet assessed
Volume 31
Issue 9
Start page 1141
End page 1147
Total pages 7
Place of publication New York, United States
Publisher Elsevier
Collection year 2016
Language eng
Formatted abstract
Objectives:  The aim of this study was to investigate how a moderate increase in dietary meat content combined (or not) with soluble fibre would influence protein digestion as well as digesta characteristics and flow.

Methods:  Four groups of pigs were fed Western-style diets (high-protein/high-fat) containing two types of barbecued red meat, one with and one without a wheat arabinoxylan-rich fraction. After 4 wk, digesta samples were collected from small and large intestinal sites and analyzed for protein, amino acids, dry matter, and acid-insoluble ash. Tissue samples were also collected from each site.

Results:  Arabinoxylan consumption led to somewhat lower apparent protein digestibility within the small and large intestines as well as shorter mean retention times. This suggests that the lowered protein digestibility is due, at least partly, to shorter access time to digestive proteases and absorptive surfaces. Additionally, digesta mass was higher in pigs fed arabinoxylan while dry matter (%) was lower, indicating an increased digesta water-holding capacity due to the presence of a soluble dietary fiber.

Conclusion:  Data showed that solubilized wheat arabinoxylan provides potential health benefits through decreased protein digestibility, increased digesta mass, and reduced mean retention time, even for diets with a moderately higher protein content. These factors are associated with efficiency of digestion and satiety, both of which have implications for prevention of obesity and other health disorders.
Keyword Arabinoxylan
Digesta flow
Protein digestion
Prevention of health disorders
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

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Created: Wed, 29 Jul 2015, 14:37:14 EST by Annette Winter on behalf of School of Veterinary Science