品系编号：ILAS-002-O-000022

品系名称：OXYR大鼠

英文名称：OXYR rat

其它名称：

物种描述：近交系

传代：

外观特征：毛色：。

遗传特征：染色体为21对?

品系来源：Developed in 1972 at the Institute of Cytology and Genetics, Russian Academy of Sciences (Novosibirsk) by Salganik and Solovyova from Wistar stock, in contrast to OXYS rat strain by selection for resistance to cataractogenic effect of galactose rich diet and brother-sister mating of highly resistant rats. In 1992, due to new findings, the symbol R was assigned to this strain. However, since this R symbol has previously been used to designate the Dahl Salt resistant strain, the symbol now assigned to this strain is OXYR.To Division of Laboratory Animal Medicine, the University of North Carolina at Chapel Hill, 1994 at F72.

相关亚系：

生物学特征：大鼠繁殖快。肠道较短，盲肠较大，但盲肠功能不发达。性情较凶猛、抗病力强。无胆囊。不能呕吐。不耐饥饿，肠内能合成维生素C。双子宫。胸部和鼠蹊部各有三对乳头。胰腺十分分散，位于胃和十二指肠弯曲处。

寿命与疾病：寿命3～4年。

研究应用：生物医学研究。

饲养与繁殖：大鼠2月龄时性成熟，性周期4天左右，妊娠期20（19～22），哺乳期21天，每天产仔平均8只，为全年、多发情性动物。?

保种单位：

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