本文对引入的良种实验动物W—Ⅰ大鼠一年来的繁殖情况进行了系统观察,结果表明:引入种鼠由25只增殖为3336只,已形成了具有一定规模的基础群,并在受胎率、分娩率、平均产仔数以及仔鼠性比和离乳仔数的平均体重等重要繁殖指标方面的均与原种资料保持一致。引入后的W—Ⅰ大鼠,在扩大繁殖的现阶段基本保持原种的繁殖力强,产仔数多的生殖生物学特性。
After introduction, the reproductive condition of Wistar-Imamichi Rats has been surveyed systematically for a year. The results has indicated that the number of induced Wistar-Imamichi rats has been increased from 25 to 3336, forming a fixed scale basic herd. In the aspect of reproductive index, including the pregnant rate, birth rate, the average bodyweight of age of 21 days, the litter size and the sex ratio, the induced rats have kept the same level with the data of original standard Wistar-Imamichi rats. In the period of mass reproduction the induced rats have kept the reproductive biological characteristics of strong reproductive potential and high litter size of the original species.
旭日干,张锁链,薛晓先. Wistar-Imamichi大鼠的引种、保种与扩大繁殖的研究 Ⅱ.引入种鼠一年来的繁殖情况观察[J].中国比较医学杂志,1991,(Z1).
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