Objective

To explore the growth, development and reproductive performance of SPF closed

colony Mongolian gerbil, further improve its biological characteristics, and provide data reference for the

standardization research and related scientific research of Mongolian gerbil. Method

Forty four pairs of

Mongolian gerbil with good reproductive performance were randomly selected from the SPF closed colony

of Mongolian gerbil raised in a barrier environment for breeding, and the relevant reproductive information

was recorded and counted. Eighty Mongolian gerbil ( half male and half female) were randomly selected

after birth, weighed regularly and drew a 1 - 77 day growth curve. Result

The litter size of Mongolian

gerbil was mainly distributed between 4 - 9, accounting for 84. 2% of total number of fetuses. The

gestational interval is mainly distributed between 24 and 35 days, accounting for 72. 1% of the total

number of fetuses. The initial production age is mainly distributed between 82 and 134 days, accounting

for 77% of total number of female Mongolian gerbils. The number of fetuses with a 100% weaning rate

accounts for 79% of the total number of fetuses. Conclusion

The SPF closed colony Mongolian gerbil

raised in the barrier environment has good reproductive performance, good maternity and can mate and

Mongolian gerbil gained the fastest weight. At the age of 42 to 77 days, the weight of males is

significantly greater than that of females.

Mongolian gerbil, SPF closed colony, reproductive characteristics, growth curve

目的 了解 SPF 级封闭群长爪沙鼠的生长发育及繁殖性能,进一步完善其生物学特性,为长爪沙鼠标准化研

究及相关科研工作提供数据参考。 方法 从饲养在屏障环境中的 SPF 级封闭群长爪沙鼠群体中随机挑选 44 对繁

殖性能良好的长爪沙鼠进行配种,记录并统计相关繁殖信息。 随机挑选出生后的长爪沙鼠 80 只( 雌雄各半) ,定期

称重并绘制 1 ~ 77 日龄生长曲线。 结果 长爪沙鼠窝产仔数主要分布在 4 ~ 9 只,占总胎数的 84. 2%。 胎间隔主要

分布在 24 ~ 35 d,占总胎数的 72. 1%。 初产日龄主要分布在 82 ~ 134 d,占总雌鼠量的 77%。 离乳率为 100%的胎数

占总胎数的 79%。 结论 屏障环境中饲养的 SPF 级封闭群长爪沙鼠繁殖性能良好,母性良好且产后即可交配受

孕。 长爪沙鼠最适离乳日龄为 25 日龄。 25 ~ 42 日龄长爪沙鼠体质量增长最快。 42 ~ 77 日龄雄性长爪沙鼠体质量

显著大于雌性。

长爪沙鼠, SPF 封闭群, 繁殖特性, 生长曲线