Barlet J P, Davicco M J, Coxam V
INRA-Theix, laboratoire croissance et métabolismes des herbivores, métabolisme mineral et ostéogenèse, Saint-Genès-Champanelle, France.
Reprod Nutr Dev. 1995;35(5):475-89.
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.
无机磷的肠道吸收。在大多数哺乳动物物种中，无机磷（P）在十二指肠和空肠水平被吸收。然而，马的一些磷是从大肠吸收的，而反刍动物的一些吸收也发生在前胃。肠上皮细胞刷状缘假定的磷酸盐 - 钠载体的结构仍有待确定。磷的吸收受内分泌（骨化三醇、三碘甲状腺原氨酸）和营养因素（饮食中的矿物质、磷的化学形式）的调节。唾液磷分泌的调节、反刍动物肠道对磷的吸收及其对高磷或低磷饮食的适应性仍知之甚少。此类研究可能有助于降低农场动物补充磷的成本。
