两种不同妊娠方法对大鼠繁殖性能的影响  

Effect of Two Different Pregnancy Methods on Productive Capacity of Mice

作　　者：张劲松[1] 冷扬[1] 

机构地区：[1]广东医学院实验动物中心,湛江524023

出　　处：《实验动物科学与管理》2004年第1期9-11,共3页Laboratory Animal Science & Administration

摘　　要：目的　比较带乳妊娠 (哺乳期妊娠 )和一般妊娠这两种繁殖方法在子代生产中的作用。方法　取 5月龄左右的SD母大鼠 ,分为试验组 (带乳妊娠 )和对照组 (一般妊娠 ) ,两组都按 1∶1(♀∶♂ )交配方式 ,连续试验三次。结果试验组平均产仔数为 9 3 0只 ,对照组平均产仔数为 8 0 7只 ,而且在此期间带乳妊娠的自发性乳腺瘤普遍降低。ObjectiveTo compare the two productive methods,cocurrent pregnancy mice and general pregn ancy ones,in offspring production.Methods\ SD famal rats (5 monthes o ld)were divided into two groups,one of which was the experiment group (cocurrent pregnancy) and the other was control group(general pregnancy).All rats mated in 1∶1(♀∶♂)and continued to be observed for three pregnancies.Results\ Average litter size was 9.30 in experiment group and it was 8.07 in general group.In this period,the number of cocurrent pregnancy rats with mammary tumour reduced generally.Conclusions\ Cocurrent pregnancy is an efficient method in improving the output rate of rats.

关 键 词：妊娠方法 大鼠 繁殖性能 哺乳期 

分 类 号：S865.120.3[农业科学—野生动物驯养]