Pointillart A, Coxam V, Sève B, Colin C, Lacroix C H, Guéguen L
Laboratoire de Nutrition et Sécurité Alimentaire, INRA, Jouy-en-Josas, France.
Reprod Nutr Dev. 2000 Jan-Feb;40(1):49-61. doi: 10.1051/rnd:2000119.
Dairy products provide abundant, accessible calcium for humans, while some calcium sulfate-rich mineral waters could provide appreciable amounts of calcium. But there is little evidence that this calcium is as available as milk calcium for making bone. The availability of calcium was studied by monitoring bone parameters in 2-month-old pigs fed restricted amounts of calcium (70% RDA) for 2.5 months. The 3 main (> or = 50% Ca intake) Ca sources were either CaCO3 or CaSO4 or skim milk powder (29% of the diet). The bones of the pigs fed the "milk" diet had higher (P < 0.01) ash contents, breaking strength and density (DEXA) than those of the two others groups, in which the bone values were similar. Thus, the calcium provided by a diet containing milk appears to ensure better bone mineralization than do calcium salts included in a non-milk diet. The calcium restriction may have enhanced some milk properties to stimulate calcium absorption in these young, rapidly growing pigs.
乳制品为人类提供了丰富且易于获取的钙，而一些富含硫酸钙的矿泉水也能提供可观数量的钙。但几乎没有证据表明这种钙在促进骨骼生长方面能与牛奶中的钙相媲美。通过监测2月龄仔猪的骨骼参数来研究钙的利用率，这些仔猪被限制摄入钙（70%的推荐膳食摄入量），为期2.5个月。三种主要的（钙摄入量≥50%）钙源分别是碳酸钙、硫酸钙或脱脂奶粉（占日粮的29%）。喂食“牛奶”日粮的仔猪骨骼的灰分含量、断裂强度和密度（双能X线吸收法）均高于其他两组，而后两组的骨骼各项数值相近。因此，含牛奶的日粮所提供的钙似乎比不含牛奶的日粮中的钙盐能更好地确保骨骼矿化。钙限制可能增强了牛奶的某些特性，从而刺激了这些快速生长的幼猪对钙的吸收。
