[Comparative kinetics of appearance in the portal vein of alpha-aminated nitrogen from mixtures of small peptides of free amino acids of the same composition introduced in the duodenum of conscious pigs].
The quantitative kinetics of appearance of amino acids (a.a.) in the pig portal vein was studied in 6 animals for 5 hrs. after duodenal perfusion of an enzymatic hydrolysate of milk proteins or a solution of free a.a. of the same composition. Each product was given in two quantities (55 and 110 g). The quantities of a.a. appearing in the portal vein were higher after perfusion of the hydrolysate than after that of the free a.a., independently of the time after the perfusion. Thus, nitrogen present in the small intestine as small peptides is absorbed more quickly than when it is present as free amino acids.
D000596:Amino Acids / Q000378:metabolism*; D000818:Animals; D001143:Arousal; D004386:Duodenum; D004750:Enteral Nutrition; D007408:Intestinal Absorption; D007700:Kinetics; D010455:Peptides / Q000378:metabolism; D011169:Portal Vein / Q000378:metabolism*; D013552:Swine
D000596:Amino Acids; D010455:Peptides
Cinétique comparée d'apparition dans la veine porte de l'azote alpha-aminé provenant de mélanges de petits peptides ou d'acides aminés libres de même composition introduits dans le duodenum chez le porc éveillé.