目的  观察两种饲料饲喂BALB/c小鼠的效果。方法 将10对BALB/c小鼠随机分为两组：A组5对小鼠，饲喂60Co辐照灭菌的颗粒饲料；B组5对小鼠，饲喂121 ℃、7 min抽真空高压消毒的颗粒饲料。比较两组小鼠的生长、发育和繁殖情况。结果  虽然60Co辐照灭菌的颗粒饲料的价格高于121 ℃、7 min抽真空高压消毒的颗粒饲料，但采用60Co辐照灭菌饲料饲喂，不论是母鼠的生殖能力和仔鼠的生长速度，还是提供1只离乳小鼠的耗料成本，均优于采用121 ℃、7 min抽真空高压消毒饲料饲喂。结论  60Co辐照灭菌饲料用于饲养BALB/c小鼠较为经济合算。

Objective  To observe the effectiveness of two feeds in feeding BALB/c mice.Methods  Ten couples of BALB/c mice were divided randomly into two groups with 5 couples of animals in each.Group A mice were fed with the feed sterilized by 60Co-γ ray irradiation,and group B mice were fed with the feed sterilized by pre-vacuum autoclaving at 121 ℃ for 7 minutes.The growth,development and reproduction of mice in the two groups were compared. Results  Although the feed price of group A was higher than that of group B,the reproduction of female mice and the growth rate of their offspring in group A were better than those in group B,and the feed consumption cost for producing a weanling mouse in group A was lower than that in group B. Conclusion  It is cost-effective to use the feed sterilized by 60Co-γ ray irradiation for feeding BALB/c mice.