Whole-grain rye, refined wheat, and whole-grain wheat breads influence metabolic fingerprints differently in pigs

Abstract

The aim of this study was to compare the influence of whole-grain rye bread (WGRB), whole-grain wheat bread (WGWB), and refined wheat bread (WB) on the gut metabolic fingerprint to increase the understanding of the mechanism behind health aspects related to whole-grain products. Five pigs with an initial weight of 46 kg were used in a changeover design, with 3 diets and 3 periods. The experimental diets consisted of WGRB, WGWB, and WB and were balanced with similar content of dietary fiber (adjusted with cellulose), protein, and fat. Each diet period lasted for 7 d. Fecal samples were collected during Days 4 through 7 in each experimental period. Nuclear magnetic resonance (NMR) was used to analyze metabolic profiles from the fecal samples. Principal component analysis of metabolic fingerprints showed that the type of bread influenced the metabolic profile and that WGRB influenced metabolic profiles differently compared with WGWB (P = 0.03) and WB (P = 0.04). Quantification of the shortchain fatty acids in the NMR data revealed differences with higher concentrations of lactate (P = 0.04) and lower molar proportions of acetate (P = 0.03) in rye bread compared with wheat breads.

Keywords

dietary fiber; metabolome; pig; rye; wheat; whole-grain bread

Published in

Journal of Animal Science
2016, volume: 94, number: supplement 3, pages: 161-163
Publisher: AMER SOC ANIMAL SCIENCE

SLU Authors

• Ivarsson, Emma

  • Department of Applied Animal Science and Welfare, Swedish University of Agricultural Sciences
    

• Saenbungkhor, Nualprae

  • Department of Applied Animal Science and Welfare, Swedish University of Agricultural Sciences
    

• Agback, Peter

  • The Department of Chemistry and Biotechnology, Swedish University of Agricultural Sciences
    

• Lindberg, Jan Erik

  • Department of Applied Animal Science and Welfare, Swedish University of Agricultural Sciences
    

• Moazzami, Ali

  • The Department of Chemistry and Biotechnology, Swedish University of Agricultural Sciences
    

• Dicksved, Johan

  • Department of Applied Animal Science and Welfare, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Other Chemistry Topics
Animal and Dairy Science

Publication identifier

• DOI: https://doi.org/10.2527/jas.2015-9778

Permanent link to this page (URI)

https://res.slu.se/id/publ/77950