McDonald N, Belonje P C
J S Afr Vet Assoc. 1975 Dec;46(4):331-4.
Six 14 month old rams were divided equally into three groups and received either a high Ca (1,102% Ca : 0,192% P : 0,128% Mg), control (0,322% Ca : 0,311=P : 0,128% Mg) or high P (0,127% Ca : 1,043% P: 0,130% Mg) diet in pellected form for 150 days. 2. Dry mass and ash % of the third cervical vertebra decreased as Ca intake decreased while fat % increased. There was a highly significant negative correlation (= -0,992) between bone ash% and bone fat %. Bone P and Mg showed no particular trends. 3. Total body Ca and P as well as % body Ca and P all decreased with a decrease in dietary Ca and increase in dietary P intake. Body Mg showed no particular trend. 4. The results suggest that while plasma values may be useful in assessing the P intake of sheep on natural pastures, bone and total body P may not be.
将6只14月龄的公羊平均分为三组，分别给予高钙（钙含量1.102%：磷含量0.192%：镁含量0.128%）、对照（钙含量0.322%：磷含量0.311%：镁含量0.128%）或高磷（钙含量0.127%：磷含量1.043%：镁含量0.130%）的颗粒饲料，为期150天。2. 随着钙摄入量的减少，第三颈椎的干物质和灰分百分比降低，而脂肪百分比增加。骨灰分百分比与骨脂肪百分比之间存在高度显著的负相关（=-0.992）。骨磷和骨镁无特定趋势。3. 随着日粮钙含量的降低和日粮磷摄入量的增加，全身钙和磷以及机体钙和磷的百分比均下降。机体镁无特定趋势。4. 结果表明，虽然血浆值可能有助于评估天然牧场绵羊的磷摄入量，但骨骼和全身磷可能并非如此。
