Effect of resistant starch on net portal-drained viscera flux of glucose, volatile fatty acids, urea, and ammonia in growing pigs

• Published in: Journal of animal science Vol. 75; no. 10; pp. 2697 - 2704
• Main Authors: Meulen, J. van der, Bakker, G.C.M, Bakker, J.G.M, Visser, H. de, Jongbloed, A.W, Everts, H
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Savoy, IL Am Soc Animal Sci 01.10.1997; American Society of Animal Science; Oxford University Press
• Subjects: ABSORCION; ABSORPTION; ACIDE GRAS VOLATIL; ACIDO GRASO VOLATIL; ALMIDON; ALMIDON DE MAIZ; AMIDON; AMIDON DE MAIS; AMIDON DE POMME DE TERRE; AMMONIA; Ammonia - blood; Ammonia - metabolism; AMMONIAC; AMONIACO; Animal productions; Animals; APPAREIL DIGESTIF; ARTERE; ARTERIAS; ARTERIES; AZUCAR EN SANGRE; Biological and medical sciences; BLOOD CIRCULATION; Blood Glucose - analysis; BLOOD PLASMA; BLOOD SUGAR; BLOOD VESSELS; Carbohydrates; CERDO; CHEMICAL COMPOSITION; CIRCULACION SANGUINEA; CIRCULATION SANGUINE; COMPOSICION QUIMICA; COMPOSITION CHIMIQUE; CONTENIDO DE MATERIA SECA; CORN STARCH; DEBIT; DIET; Diet - veterinary; DIETA; DIGESTIBLE ENERGY; DIGESTION; DIGESTIVE SYSTEM; DIGESTIVE TRACT; DRY MATTER CONTENT; ENERGY VALUE; Fatty Acids, Volatile - blood; Fatty Acids, Volatile - metabolism; Feces - chemistry; FECULA DE LA PAPA; Feeding. Feeding behavior; FLOW RATE; Fundamental and applied biological sciences. Psychology; GASTO; Glucose - metabolism; Hogs; ID Lelystad, Institute for Animal Science and Health; ID-Lelystad, Instituut voor Dierhouderij en Diergezondheid; Male; METABOLISME DE L'AZOTE; METABOLISMO DEL NITROGENO; METABOLITE; METABOLITES; METABOLITOS; Nitrogen - analysis; Nitrogen - urine; NITROGEN BALANCE; NITROGEN METABOLISM; Physical growth; PLASMA SANGUIN; PLASMA SANGUINEO; PORCIN; Portal System - physiology; PORTAL VEIN; POTATO STARCH; Random Allocation; REGIME ALIMENTAIRE; SISTEMA DIGESTIVO; Solanum tuberosum - chemistry; STARCH; Starch - analysis; Starch - pharmacology; SUCRE DU SANG; SWINE; Swine - blood; Swine - metabolism; TENEUR EN MATIERE SECHE; Terrestrial animal productions; UREA; Urea - blood; Urea - metabolism; UREE; VAISSEAU SANGUIN; VALEUR ENERGETIQUE; VALOR ENERGETICO; VASOS SANGUINEOS; Vertebrates; Vertebrates: anatomy and physiology, studies on body, several organs or systems; Viscera - blood supply; VOLATILE FATTY ACIDS; Zea mays - chemistry; Growing phase; Farming animal; Starch; Glucose; Metabolism; Pig; Ammonia; Urea; Vertebrata; Mammalia; Diet; Volatile fatty acid; Artiodactyla; Ungulata
• ISSN: 0021-8812; 1525-3163; 0021-8812
• DOI: 10.2527/1997.75102697x

Net portal-drained viscera (PDV) flux of glucose, VFA, ammonia, and urea was determined in pigs fed diets with or without resistant starch. Diets consisted of 65% cornstarch (diet CS), 32.5% cornstarch and 32.5% raw potato starch (diet CPS), or 65% raw potato starch (diet PS); the remaining 35% supplied all amino acids, fat, fiber, minerals, and vitamins. The diets contained twice the maintenance requirement for energy and were fed twice daily to four barrows (initial BW 56 kg) in three periods in a crossover design. The pigs were fitted with catheters in a mesenteric vein, a mesenteric artery, and the portal vein, and net PDV flux was calculated by multiplying portal-arterial concentration differences and corresponding portal vein flow. Net PDV flux of glucose was significantly less after feeding diets CPS and PS, and portal absorption of ileally digested glucose was 89, 66, and 41% for diets CS, CPS, and PS, respectively. Net PDV flux of VFA was lowest after feeding diet CS and three to four times higher after feeding diets CPS and PS. Net PDV flux of ammonia was highest for diet CS and almost halved after feeding diets CPS and PS. There was a small negative net PDV flux of urea for diets CS and CPS, which significantly increased after feeding diet PS. These results suggest that excretion of nitrogen is shifted from urine to feces primarily by reduction of the net PDV flux of ammonia when resistant starch is fed