实验动物的内脏器官重量和脏器系数(脏器重量/体重×100%)是其主要的生物学特性之一,是鉴定动物遗传品质的重要依据。在生物医学研究中,还可用来衡量和反映动物的功能状态。在药品长期毒性(慢毒)试验中,实验动物主要脏器的重量及脏器系数则是必须观察和检测的项目[1]。脏器系数 Laboratory animal visceral organ weight and organ coefficient (organ weight / body weight × 100%) is one of the main biological characteristics, is an important basis for the identification of animal genetic quality. In biomedical research, it can also be used to measure and reflect the functional status of animals. In the long-term drug toxicity (chronic toxicity) test, the weight of major organs and organ coefficients of experimental animals are the items that must be observed and tested [1]. Organ coefficient