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目的 观察分析BALB c系裸小鼠不同胎次的繁殖能力和繁殖规律。方法 以 160只种鼠雌雄各半为研究对象 ,根据其繁殖卡的详细资料 ,进行分类统计。结果 BALB c裸小鼠怀孕率 95% ,平均每只母鼠怀孕 (3 0 9± 1 2 3 )胎 ,平均产仔数为 (7 2 1± 2 74)只 ;纯合子数占总产仔数的 50 53 % ,平均窝纯合子数 (3 64± 1 57)只 ;纯合子离乳数占纯合子数的 88 3 2 % ,平均窝纯合子离乳数 (3 2 2± 1 83 )只。其繁殖性能以第 2、3胎最好 ,第 1、4胎次之 ,第 5胎最差。结论 BALB c系裸小鼠在三级屏障系统内生长繁殖良好 ,每只雌鼠最好繁殖 3胎或 4胎即要更换种鼠
Objective To observe and analyze the reproductive capacity and reproductive patterns of BALB / c nude mice in different stages. Methods 160 male and half male and female mice were selected as the research object. According to the details of their breeding card, the classification statistics were made. Results The pregnancy rate of BALB c nude mice was 95%, and the average number of pregnant mice per litter was (39 ± 123) and the average number of littermates was (72 1 ± 2 74). The number of homozygotes The average number of homozygotes was 38.32% of the number of homozygotes, and the average number of homozygous homozygotes was (32.2 ± 1.83) only. The reproductive performance of the first 2,3 tires the best, the first and fourth parity, the fifth worst. Conclusion BALB c nude mice grow well in the tertiary barrier system, and it is better for each female to multiply 3 or 4