根田鼠身体大小生长发育规律研究

Charactering on the growth and development of body size in root voles,Microtus oeconomus

在实验室条件下，利用根田鼠l～70日龄体长、尾长、后足长、耳长以及毛长等身体生长发育的主要参数，分析其身体大小生长发育的基本规律，目的在于揭示根田鼠的次级生产过程。结果表明，根田鼠l～70日龄身体上述指标随发育时间呈多项式方式增长，决定系数（R2）均〉09。各指标在33日龄后保持稳定，表明此阶段是根田鼠性器官发育的起始点。

The parameters of growth and development, body length, tail length, hind foot length, ear length, and hair length of root voles （ Microtus oeconomus） 1 - 70 d were measured under laboratory con- clifton. The basic regulation of growth and development were analyzed. The aims were to explore the pro- cess of secondary production of root voles. The results as follows： those parameters were increased with developmental stage and followed muitinomial equations, all detemination coefficients （R2 ）were greater than 〉 0.9. These parameters of body size were stable after 33 d. which suggested the phase was deve- lopmental beginning of sexual organs of M. oeconomuis.