树实验种群的繁育

探讨了树实验种群的繁育。结果是5对成年树在7个月内共产11窝31只仔树。27只出生后即人工喂养的仔树中，25只健康存活至进入动物实验。成年树平均产仔周期为（52±8.9）d；仔树的人工喂养成活率为92.6%。可以认为树实验种群的人工繁育是可行的。人工繁育的树有望取代野外捕获的树用于有关的动物实验研究。

Hand Rearing of Tree Shrews

The experiment was to explore and develop a practical way of hand rearing tree shrews. Five pairs of adult tree shrews were raised in breeding cages, fed with mixed food composed of purified standard diet, cheese, fruits and vegetables. Newborn tree shrews were weaned from their mothers soon after they were born, and kept in an incubator for about 3 weeks. The infant tree shrews were fed with a milk formula for the first 3 weeks, then they were moved out from the incubator and fed with a transitional diet for 10 days when they got ready for adult food. As a result, 31 pups in 11 litters were born within 7 months by 5 pairs of adults. Twenty seven pups were hand-reared from birth and 25 of them survived to 7 weeks of age when they were used in experiment. The average period between the day of putting the female and male adults together and the day of delivery was (52±8.9) days. The survival rate for hand-rearing newborns was 92.6%, which was higher than any data in known publications. The success in hand rearing tree shrews would meet the increasing need for them in medical research, especially in the field related to liver cancer and hepatitis.