Absence d'effet de l'incorporation d'un phosphopeptide du lait sur l'utilisation du calcium et du phosphore chez le jeune porc

Abstract

Résumé ― Les phosphopeptides issus de la caséine sont prétendus augmenter l'absorption intestinale du calcium. Une étude de 50 jours a été effectuée sur des porcs âgés de

Influence of casein phosphopeptides and lactulose on intestinal calcium absorption in adult female rats

“…However, Pointillart and Guégen (1989) found no evidenee for such an enhancement in young pigs fed ehymotryptic easein phosphopeptides for 52 days. In addition, Li et al (1989) could find no evidenee for a direct stimulatory effect of casein phosphopeptides on intestinal Ca transport in the rat ileum as these peptides inhibited the mueosal to serosal transfer of Ca in direct relationship to the reduetion in mueosal ionized Ca concentrations.…”

“…A balance study with young pigs fed a 0.8% Ca diet for 52 d showed no influence of 5% casein phosphopeptides on intestinal Ca absorption (Pointillart and Guégen, 1989). Despite the absence of a long-term effect, a transient stimulation of Ca absorption might have occurred.…”

Availability of calcium from skim milk, calcium sulfate and calcium carbonate for bone mineralization in pigs

“…The bending moment was calculated according to the formula: bending moment = F × L/4, where F is the failure load, and L the length (m) between the two fulcrum points supporting the bone. It is expressed in N × m. This parameter was selected because of its great sensitivity to mineral nutrition in the pig [8,35,38,39].…”

“…Our previous studies in pigs have provided no evidence that calcium is better absorbed from milk and milk products (casein phosphopeptides, skim milk or yogurt) than from mineral salts (CaCO 3 , CCM, CaHPO 4 ) incorporated in cereal + soya diets [35,36,38]. However, the breaking strength of bones from pigs fed yogurt as a calcium source is better than that of bones from pigs that obtained their calcium mostly from inorganic salts [38].…”

Improvement of zinc intestinal absorption and reduction of zinc/iron interaction using metal bound to the caseinophosphopeptide 1-25 of β-casein

“…In vivo studies on the influence of CN on mineral absorption have given conflicting results. CN improve calcium absorption in rats by preventing the precipitation of calcium salts in the small intestine [28,35] but have no effect in the pig [24]. Other studies have shown them to have a limited effect on calcium absorption in the rat ileum [19].…”