灰仓鼠的室内繁殖研究

根据实验室饲养的灰仓鼠资料和观察对该鼠的繁殖进行了研究。结果显示：该鼠的好斗习性经过5年驯养已较温顺。性成熟为50d，动情周期4～4．5d，交配高峰在晚上23．00点至次日1．00点，妊娠周期19d（16～21），平均产仔间隔39．25d.窝仔数4．59只／窝（1～10），离乳成活率64．5％，雌雄性比0．883（242／274），并就以上三个指标在不同季节、不同胎次和不同繁殖代数进行了比较。雌体繁殖高峰3～12月，雌、雄体最长繁殖年限分别1．5和2．0年，寿命2．5年以上。

The Studies on Reproduction of the Grey Hamster (Cricetulus Migratorus) Living in Lab

The reproduction of the grey hamster living in Lab was studied on the obsveration and thedata which came from the recods during 1993-1998. The result shown that the bellicose habitatof the rodents has tured into a little docility by taming in Lab in five years, the age of sex maturity was 50d, the cycle of sex activity was 4d~4. 5d in the females, the peak of mating was from23. 00 to 1 .00 next day in the night, the gestational period was 19d (16 ~21 ), and the time interval of reproduction of adult female was 39. 25d. The number of mean farrowing was 4. 59 larvaat a litter, the survival rate of weaning was 64. 5 %, and sex ratio was 0. 883 (242/274 ), whichwere compared in the different season, times of foetus, and generations. The peak time of reproduction in female varied from 3 monthes to 12 monthes. The longest age of reproduction in femaleand male was 1. 5 year and 2 years respectively, the life -- span of the hamster was over 2. 5 year.