title: Stimulation of duodenal and ileal absorption of phosphate in the chick by low-calcium and low-phosphorus diets.
abstract: The intestinal absorption of phosphate has been studied in vivo in the chick using ligated segments of duodenum and ileum. Feeding diets low in calcium (0.1%) and/or low in phosphorus (0.25%) caused an increase in the absorption of phosphate from both the duodenum and ileum. These changes are consistent with a putative increase in the renal production and mucosal uptake of 1,25-dihydroxycholecalciferol.
mesh_terms: D000818:Animals; D002118:Calcium / Q000097:blood / Q000494:pharmacology; D002136:Calcium, Dietary; D002645:Chickens; D004032:Diet; D004386:Duodenum / Q000378:metabolism*; D007082:Ileum / Q000378:metabolism*; D007408:Intestinal Absorption / Q000187:drug effects*; D008297:Male; D010710:Phosphates / Q000097:blood* / Q000494:pharmacology
chemical_list: D002136:Calcium, Dietary; D010710:Phosphates; D002118:Calcium