日粮钙含量及钙磷比变化对犬骨矿沉积影响的研究

Study on the Effect of Dietary Levels of Calcium and Calcium Phosphorous Ratio on Bone Mineralization by Growing Dogs

目的研究日粮钙含量及钙磷比变化对犬骨矿沉积的影响。方法饲养、消化和屠宰试验。结果0.6%的饲料钙含量有相对较少的骨矿沉积(P<0.05),将饲料钙含量从1.2%提高到3.0%,骨矿沉积略有提高,但差异不显著。高钙没有影响骨磷沉积,高磷也没有影响骨钙沉积,但高钙会影响骨镁含量。结论1.2%的饲料钙含量及1.2∶1的钙磷比可以满足生长犬骨矿沉积的需要。

Objective To study the effect of dietary levels of Calcium and calcium phosphorous ratio on bone mineralization by growing laboratory beagal dogs. Methods Feeding test, digestive test, slaughter test. Results 0.6 % dietary levels of calcium gain less bone mineralization （ P 〈 0 .05）. Bone mineral contents increase slightly when dietary calcium level is increased from 1.2% to 3.0% （P 〉 0.05）. High dietary calcium level has no influence on phosphorous content and high dietary phosphorous level has no influence on calcium content in bone. But high dietary calcium affect magnesium content in bone. Conclusions 1.2 % dietary calcium level and 1.2 ： 1 dietary calcium phosphorous ratio are optimal for bone mineralization.