[Physiology of intestinal absorption of phosphorus in animals].
Intestinal absorption of inorganic phosphorus. In most mammalian species inorganic phosphorus (P) is absorbed at the duodenal and jejunal level. However in horses some P is absorbed from the large intestine, whereas in ruminant animals some absorption also takes place in the forestomachs. The structure of the putative phosphate-sodium carrier of the brush border from enterocytes still awaits identification. P absorption is modulated both by endocrine (calcitriol, triiodothyronine) and nutritional factors (minerals of the diet, chemical form of phosphorus). Regulation of salivary P secretion, intestinal absorption of P in ruminants, and its adaptation to diets high or low in P are still poorly understood. Such studies would probably help to decrease the cost of P supplementation in farm animals.
INRA-Theix, laboratoire croissance et métabolismes des herbivores, métabolisme mineral et ostéogenèse, Saint-Genès-Champanelle, France.
J P
JP
Barlet
M J
MJ
Davicco
V
V
Coxam
D000818:Animals; D001693:Biological Transport, Active; D004058:Diffusion; D004064:Digestive System / Q000378:metabolism; D007408:Intestinal Absorption / Q000187:drug effects; D010758:Phosphorus / Q000378:metabolism*; D013963:Thyroid Hormones / Q000494:pharmacology; D014807:Vitamin D / Q000494:pharmacology
D013963:Thyroid Hormones; D014807:Vitamin D; D010758:Phosphorus
Physiologie de l'absorption intestinale du phosphore chez l'animal.