Highlights
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Resistant starch is fraction of dietary starch that escapes digestion in upper intestinal tract.
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Starchy ingredients entering pig diets contain from 50 up to 500 g/kg DM of resistant starch.
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Resistant starch may impair energetic efficiency and feeding behavior of growing pigs.
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Resistant starch may act as a potential prebiotic source favoring butyrate production.
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Its fermentation could reduce the N emission from pig facilities.