Feed supplemented with organic acids does not affect starch digestibility, nor intestinal absorptive or secretory function in broiler chickens

Title
Feed supplemented with organic acids does not affect starch digestibility, nor intestinal absorptive or secretory function in broiler chickens
Publication Date
2015
Author(s)
Ruhnke, Isabelle
( author )
OrcID: https://orcid.org/0000-0001-5423-9306
Email: iruhnke@une.edu.au
UNE Id une-id:iruhnke
Rohe, I
Boroojeni, F Goodarzi
Knorr, F
Mader, A
Hafeez, A
Zentek, J
Type of document
Journal Article
Language
en
Entity Type
Publication
Publisher
Wiley-Blackwell Verlag GmbH
Place of publication
Germany
DOI
10.1111/jpn.12313
UNE publication id
une:17818
Abstract
The current study aimed to determine the impact of acidified feed on apparent ileal starch digestibility, intestinal transport and barrier function and intestinal glucose transporter expression. The experiment included a control group and a treatment group with broilers fed a standard diet without or w-35. Starch digestibility was determined using 0.2% titanium dioxide as ingestible marker. Gene expressions of the intestinal sodium glucose transporter 1 (SGLT-1) and glucose transporter 2 (GLUT-2) were analysed using qPCR analysis. Additionally, SGLT-1 function and chloride secretion were analysed in Ussing chamber experiments. Jejunal samples were sequentially exposed to 10 mM glucose, 100 µm phloridzin, 100 µm histamine and 100 µm carbachol. Apparent ileal starch digestibility (±SEM) of the control group (97.5 ± 35%) and the acid-treated group (97.0 ± 59%) did not differ (p = 0.674). The mean tissue conductance of intenstinal samples obtained from the control group and the treatment group was similar [10.6 mS/cm² (±0.68) and 9.4 mS/cm² (±0.80) respectively (p = 0.147)]. The mean short-circuit currents (ΔIsc) of the samples exposed to glucose, phloridzin, histamine and carbachol did not differ (p > 0.05). Additionally, no differences in the expression of SGLT-1 and GLUT-2 could be observed (p = 0.942, p = 0.413). Based on this study, the consumption of feed supplemented with organic acids was not associated with effects on ileal starch digestibility and functional traits of jejunal tissues, indicating that these additives have no major impact on the small intestinal function in broilers.
Link
Citation
Journal of Animal Physiology and Animal Nutrition, 99(Supplement S1), p. 29-35
ISSN
1439-0396
0931-2439
Start page
29
End page
35

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