品系编号：ILAS-002-S-000600

品系名称：SS大鼠

英文名称：SS 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：Rapp from a colony of Sprague-Dawley 封闭群 rats developed by LK Dahl, Brookhaven National Laboratories, Upton, New York, selected for sensitivity to salt-induced hypertension (Dahl et al 1962a,b, Rapp 1982). Also designated S/JR by Rapp (1984), who gives an extensive review of the characteristics of the strain, and Dahl S by Mollegard, Copenhagen. Note that the Dahl selected strain has been independently 近交系 at the NIH, and designated DSS/N. There is likely to be confusion among these colonies unless considerable care is taken with nomenclature. Stlezin et al (1992) found that SS and SR had about 80% of DNA fingerprint bands in common, compared with 50% between SHR and WKY. According to Ginn et al, (1993) analysis of RFLPs and microsatellites suggest that SR is a reasonably good control strain for SS, though crosses between SS and unrelated normotensive strains will be useful in dientifying the loci responsible for salt-induced hypertension.

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：Brookhaven National Laboratories, Upton, New York

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