Ileal digestibility of amino acids in pigs fed diets of different buffering capacity and with supplementary organic acids

Z. Mroz, A. Jongbloed, K. Partanen, J. van Diepen, K. Vreman, J. Kogut
1998 Journal of Animal and Feed Sciences  
A 2 x 4 factorial experiment was carried out with eight SICV-cannulated pigs of 30 kg initial BW. Dietary buffering capacity (632 vs 578 meq/kg in Diets H and L, respectively) in combination with supplementary organic acids (formic acid, fumaric acid or n-butyric acid in acid-equivalent doses of 300 mmol/kg) were evaluated for their effects on the apparent ileal digestibility (AID) of protein and amino acids. In the presence of these organic acids in Diet H ("practical"), the AID of crude
more » ... AID of crude protein and several amino acids increased by 2.9 to 5.9%-units (PO.05). This increase was linear and positively correlated with increasing dietary acidity. Feeding Diet L without organic acids resulted in an increase of urinary acidity by 1.6 pH-units, and thereby, ammonia emission from manure was 44% lower.
doi:10.22358/jafs/69974/1998 fatcat:jjinpvqpdnbchkq2shmdqugxdq