caa a22 4500 397569130 CHVBK 20180308164836.0 cr unu---uuuuu 161202e199608 xx s 000 0 eng 10.3382/ps.0750998 doi (NATIONALLICENCE)oxford-10.3382/ps.0750998 Uptake Capacity In Vitro for Glucose and Methionine and In Situ for Oleic Acid in the Proximal Small Intestine of Posthatch Chicks [Elektronische Daten] [YAEL NOY, DAVID SKLAN] The uptake capacity of the duodenum and jejunum was determined in vitro for glucose and methionine using 14C-inulin as an unabsorbed reference substance in posthatch chicks. Fatty acid uptake in situ was also determined in the duodenum. Methionine uptake capacity increased in both duodenum and jejunum between hatch and 7 d and was constant between 7 and 14 d. Calculation of apparent Michaelis constant (Kt) for both substrates indicated little change with age and thus the amount of carrier in the intestine may be increasing. Uptake capacity of the duodenum for glucose increased between hatch and 7 d of age but no changes were found between 7 and 14 d. In the jejunum, uptake capacity was constant from hatch to 14 d of age. In situ uptake of oleic acid in the duodenum did not change between hatch and 14 d of age. These results suggest that intestinal uptake capacity changes little after 7 d of age, and thus feed intake may be the major factor controlling nutrient uptake in chicks. © 1996 Poultry Science Association, Inc. Metabolism and Nutrition nationallicence chick nationallicence intestine nationallicence glucose nationallicence methionine nationallicence NOY YAEL aut SKLAN DAVID 1To whom correspondence should be addressed. aut Poultry Science Oxford University Press 75/8(1996-08), 998-1002 0032-5791 75:8<998 1996 75 ps https://doi.org/10.3382/ps.0750998 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.3382/ps.0750998 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- NOY YAEL aut NATIONALLICENCE 700 1- SKLAN DAVID 1To whom correspondence should be addressed aut NATIONALLICENCE 773 0- Poultry Science Oxford University Press 75/8(1996-08), 998-1002 0032-5791 75:8<998 1996 75 ps Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford