中文摘要：

目的分析野生小鼠来源1号染色体替换系小鼠群体的生长表型与血液生化指标,探讨替换系群体的QTL定位潜力。方法以染色体替换系近交后代小鼠为研究对象,测定其体重、体长、尾长、血液生化、内脏器官重量等表型数据,统计其与C57BL/6差异显著性。结果发现替换系小鼠在多个指标上与C57BL/6具差异有显著性。不同发育时期的外部表型上与C57BL/6相比,体重具显著差异的是B6-Chr1KM等6个品系,体长具显著差异的是B6-Chr1K M等5个品系,尾长具显著差异的是B6-Chr1K M等9个品系;部分品系在肝、脾、肾脏和脑部重量上存在与C57BL/6的显著差异;生化指标上,丙氨酸氨基转移酶B6-Chr1CM雌鼠显著偏高,碱性磷酸酶B6-Chr1HZ雌鼠显著偏高、B6-Chr1KM雄鼠显著偏低,总胆红素B6-Chr1CM雄鼠、B6-Chr1SMX雄鼠和B6-Chr1HZ雄鼠显著偏高,甘油三酯B6-Chr1SMX雄鼠显著偏高,总胆固醇B6-Chr1TW雄鼠显著偏高。结论培育的野生小鼠来源的1号染色体替换系群体在部分表型上与C57BL/6差异有显著性,具备作为QTL定位的遗传资源潜力。

英文摘要：

Objective To analyze the growth phenotype and blood biochemical parameters of chromosome 1 substi-tution mouse strain(CSS1), and investigate their potential of QTL mapping .Methods Body weight, body length, tail length, organ weight of the CCS1 mice were measured at different days to create a growth curve while blood biochemical in -dexes were measured at about the 80th day.Results The CCS1 mice were different from C57BL/6 mice in several inde-xes.Compared with the C57BL/6 mice during different developmental stages , six strains including B6-Chr1KM mice were significantly different in body weight .There were five strains including B6-Chr1CM mice significantly different with C57BL/6 mice in body length, and all of the CSS1 mice were significantly different from C57BL/6 mice in tail length.Part of CCS1 mice were significantly different from C57BL/6 mice in the weight of liver, spleen, kidney and brain.The ALT of female B6-Chr1CM mice was significantly higher than that in the C 57BL/6 mice.The ALP of female B6-Chr1HZ mice was signifi-cantly higher than that in the male C57BL/6 and B6-Chr1KM mice, and was significantly lower than that in the C57BL/6 mice.The TB of male B6-Chr1CM, B6-Chr1SMX and B6-Chr1HZ mice was significantly higher than that of the C 57BL/6 mice.The TG of male B6-Chr1SMX mice and male B6-Chr1TW mice was significantly higher than that in the C 57BL/6 mice. Conclusions The phenotype of Chr1 CSS mice is quite different from commonly used inbred strain C 57BL/6 mice.CCS1 mice show great potential in QTL mapping for their characteristic growth phenotype and blood biochemical indexes .