小鼠基础代谢率与繁殖输出和繁殖期末器官的关系  

Relationships between Basal Metabolic Rate and Reproductive Output and Visceral Organs in Lactating Mice

作　　者：赵志军[1] 曹静[1] 李路胜[1] 

机构地区：[1]聊城大学农学院,山东聊城252059

出　　处：《动物学杂志》2010年第4期39-45,共7页Chinese Journal of Zoology

基　　金：聊城大学博士科研启动基金项目(No.31805);山东省教育厅项目(No.J09LC70);国家自然基金项目(No.30800130)部分资助

摘　　要：以封闭式流体压力呼吸计测定KM小鼠(Mus musculus)的基础代谢率(BMR);采用残差分析和Pearson相关分析检验BMR与繁殖输出、内脏器官的相关性。哺乳末期BMR显著高于繁殖前,繁殖前BMR与繁殖输出不相关,但哺乳末期BMR与体重、摄食量、胎仔数和胎仔重、内脏器官和消化道显著正相关;与消化道器官的相关性高于其他内脏器官。研究结果支持"哺乳期较高的BMR有利于消化系统增强消化和吸收能力,以增加能量摄入用于繁殖输出"的假设。The basal metabolic rate （ BMR） was measured in the female KM mice（ Mus musculus） prior to reproduction and at late lactation using a closed-circuit respirometer. Relationships between BMR,reproductive output and visceral organs were examined using Regression residuals and Pearson correlation analyses. It was showed that the BMR was 66% higher at late lactation than that prior to reproduction. There was no significant correlation between the BMR prior to reproduction and reproductive output. However,the BMR at late lactation was positively correlated with maternal body mass,food intake,litter size and mass,as well as the weight of visceral organs and gastrointestinal tract,within which the correlation between BMR and gastrointestinal tract was higher relative to the other visceral organs. Our data have provided support for the hypothesis that animals with high BMR during lactation might have a greater capacity for absorbing energy,and consequently have more energy export for reproductive output.

关 键 词：基础代谢率 哺乳 小鼠 繁殖 

分 类 号：Q493.8[生物学—生理学] Q494