caa a22 4500 38632218X CHVBK 20180307111630.0 cr unu---uuuuu 161130e198807 xx s 000 0 eng 10.1079/BJN19880080 doi S0007114588000819 pii (NATIONALLICENCE)cambridge-10.1079/BJN19880080 Absorption kinetics of dietary hydrolysis products in conscious pigs given diets with different amounts of fish protein [Elektronische Daten] 1. Amino-nitrogen and glucose 1. Concentrations of amino-nitrogen, glucose, reducing sugars and lactic acid in blood obtained from arterial and portal permanent catheters were measured together with the portal hepatic blood flow-rate during a post-prandial period of 8 h in twenty unanaesthetized pigs (initial mean body-weight 52·3 (SEM 0·9) kg) receiving experimental meals (200-1000 g) at 3-4 d intervals from 6-8 to 20 d after surgical implantation of the catheters and electromagnetic flow probe. The semi-synthetic starch-based diets contained variable amounts of fish meal giving crude protein (nitrogen x 6·25; CP) concentrations (g CP/kg) of 80 (seven meals), 120 (twenty-two meals), 160 (six meals) and 240 (nine meals). 2. After the meal the concentration of amino-N increased with increasing levels of protein intake and increased more in the portal than in the arterial blood. There were significant relations between amounts of amino-N appearing in the portal blood at various time-intervals after the meal and the level of protein intake. Values for the ratio, amount absorbed within 8 h: amount ingested (absorption coefficient: 0·633 for a mean intake of 13·4 g N) decreased with increasing level of protein intake. 3. There was a rise in glycaemia after the meal, increasing with the amount of carbohydrate eaten, and this was more marked in the portal than in the arterial blood. There were also significant relations between amounts of glucose absorbed and amounts of starch ingested. However, the appearance of glucose in the portal blood was less marked than that of amino-N since the absorption coefficient within 8 h was lower (0·504 for a mean intake of 291 g reducing sugars). This was most probably due to a larger uptake of glucose by the intestinal cell wall. 4. Amounts of lactic acid appearing in the portal vein during the post-prandial period did not depend on amounts ingested; they ranged from 3 to 1·6 g/h from the 1st to the 8th hour after the meal. Copyright © The Nutrition Society 1988 Rérat A. Laboratoire de Physiologie de la Nutrition, INRA, Centre de Recherches de Jouy-en-Josas, 78350 Jouy-en-Josas, France Vaissade P. Laboratoire de Physiologie de la Nutrition, INRA, Centre de Recherches de Jouy-en-Josas, 78350 Jouy-en-Josas, France Vaugelade P. Laboratoire de Physiologie de la Nutrition, INRA, Centre de Recherches de Jouy-en-Josas, 78350 Jouy-en-Josas, France British Journal of Nutrition Cambridge University Press 60/1(1988-07), 91-104 0007-1145 60:1<91 1988 60 BJN https://doi.org/10.1079/BJN19880080 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1079/BJN19880080 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rérat A. Laboratoire de Physiologie de la Nutrition, INRA, Centre de Recherches de Jouy-en-Josas, 78350 Jouy-en-Josas, France NATIONALLICENCE 700 1- Vaissade P. Laboratoire de Physiologie de la Nutrition, INRA, Centre de Recherches de Jouy-en-Josas, 78350 Jouy-en-Josas, France NATIONALLICENCE 700 1- Vaugelade P. Laboratoire de Physiologie de la Nutrition, INRA, Centre de Recherches de Jouy-en-Josas, 78350 Jouy-en-Josas, France NATIONALLICENCE 773 0- British Journal of Nutrition Cambridge University Press 60/1(1988-07), 91-104 0007-1145 60:1<91 1988 60 BJN CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence SWISSBIB 386322082 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge