SHORT COMMUNICATION
Gastrointestinal response of early-weaned pigs to
supplementation of wheat-soyabean meal diets with
fumaric acid and sodium bicarbonate
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1
Institute of Animal Nutrition, Hohenheim University,
D-70593 Stuttgart, Germany
2
Department of Agricultural, Food and Nutritional Science,
University of Alberta,
Edmonton, T6G 2P5, Canada
Publication date: 1998-08-22
J. Anim. Feed Sci. 1998;7(Suppl. 1):185-189
KEYWORDS
ABSTRACT
Two studies were conducted using piglets fitted with a simple T-cannula at the distal ileum to
determine the effect of fumaric acid supplementation and different buffering capacities on ileal
digestibilities and on the level of microbial metabolites in ileal digesta. Supplementation of fumaric
acid to a diet with a low buffering capacity (Experiment 1) improved the ileal digestibilities of
energy, crude protein and most of the amino acids (P < 0.05). The decrease in microbial metabolites
with increasing level of fumaric acid supplementation indicates a lower microbial activity in the
upper digestive tract. Supplementation of fumaric acid to a diet with a high buffering capacity (Experiment 2) showed a trend (P > 0.05) towards an increase in ileal nutrient digestibilities. Digestibility values in experiment 2 were 2–10 percentage units lower compared to the corresponding digestibility values in Experiment 1.
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