SPA活体测定蛋鸡胫骨骨矿含量方法及其重复性、准确度的探讨  

Study on precision and accuracy in measurement in vivo of bone mineral content with SPA in hens

作　　者：主性[1] 苏小齐[1] 徐立新[1] 侯加法[1] 

机构地区：[1]南京农业大学动物医学院,江苏 南京 210095

出　　处：《畜牧与兽医》2000年第6期5-7,共3页Animal Husbandry & Veterinary Medicine

摘　　要：单光子吸收法 (SPA)是活体测定人或动物骨矿含量的非侵入性方法之一。用SPA活体测定蛋鸡胫骨骨矿含量 ,探讨其测定方法的可行性、重复性及准确度。结果表明 ,以胫跖关节内侧隆起作为定位标志 ,并以距此标志 3cm处作为胫骨骨矿含量的测试部位较为理想 ,其重复性 (CV)为 7 90 % ,准确度为 2 633% (r=0 992 6,P <0 0 1 )。本试验所建立的方法 ,为研究禽类骨骼代谢疾病 (如笼养蛋鸡骨质疏松症 )奠定了基础。Single photon absorptiometry(SPA)is one of noninvasive techniques,with which bone mineral content in animals or human can be measured in vivo.The purpose of this study was to evaluate the feasibility,precision in vivo and accuracy in vitro of SPA in measuring in vivo ibia bone mineral content(BMC)of hens.The results indicated that bone mineral content could be scanned through better site,3 cm rather than 4 cm proximal from inner side hunch in tibiotarsal joint.The precision in vivo expressed as the variation coefficient(CV)for BMC measurements in 3 cm proximal to tibia tibiotarsal joint was 7 90%.The in vitro accuracy expressed as the standard error of the estimate(SEE)was 2 633%(r=0 99321,P<0 01) The method established in this experiment may lay a foundation on studing bone metablic diseases in poultry such as cage layer osteoporosis.

关 键 词：单光子吸收法 活体测定 准确度 骨矿含量 蛋鸡 

分 类 号：S831.1[农业科学—畜牧学]