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Enzymatically Modified Starch Favorably Modulated Intestinal Transit Time and Hindgut Fermentation in Growing Pigs.

M A Newman^1,2, Q Zebeli^1,2, K Velde³

¹Institute of Animal Nutrition and Functional Plant Compounds, University of Veterinary Medicine Vienna, Vienna, Austria.

|December 10, 2016

Summary

Enzymatically modified starch (EMS) acts as a functional dietary ingredient, reducing digestion in the upper intestine and increasing beneficial short-chain fatty acids (SCFA) in the hindgut. This modified starch promotes gut health by altering nutrient flow and bacterial activity.

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Area of Science:

Nutritional Science
Gastroenterology
Microbiology

Background:

Chemically modified starches are explored as functional dietary ingredients.
Developing less digestible starches that promote hindgut fermentation is a key research area.

Purpose of the Study:

To investigate the impact of enzymatically modified starch (EMS) on nutrient flow, passage rate, and bacterial activity in pigs.

Main Methods:

Eight ileal-cannulated pigs were fed diets with either EMS or waxy cornstarch (control).
Ileal digesta and fecal samples were collected to analyze nutrient flow, passage rate, and bacterial populations.
Solid and liquid phase markers were used to determine digesta flow.

Main Results:

EMS diet increased ileal and fecal dry matter and energy excretion by 10% compared to control.
EMS reduced ileal transit time for both liquid and solid digesta fractions.
EMS feeding increased fecal concentrations of short-chain fatty acids (SCFA).
Bacterial analysis showed a decrease in Lactobacillus and a tendency for an increase in Enterobacteriaceae in ileal digesta.

Conclusions:

Enzymatically modified starch (EMS) functions as a slowly digestible starch.
EMS reduces intestinal transit time and enhances SCFA production in the large intestine.