玉米秸作为大鼠垫料对其生长发育及繁殖性能的影响

目的　对比观察不同原料制成的垫料对SD大鼠繁殖性能及其仔鼠生长发育的影响 ,探讨以玉米秸为原料制作实验动物新型垫料的可行性。方法　测定使用玉米秸、卫生纸、刨花三种垫料时SD大鼠的繁殖性能指标及仔鼠体重变化 ,并进行比较分析。结果　出生仔数、初生窝重、初生重三个指标三组间比较差异无显著性 (P >0 0 5 ) ;离乳率三组间差异有显著性 (P <0 .0 5 ) ,玉米秸组与卫生纸组差异有极显著性 (P <0 .0 1) ,玉米秸组最高 ,为99.79% ;三组之间胎次间隔差异有显著性 (P <0 .0 5 ) ,玉米秸组为 31.4 1d ;仔鼠生长发育指标 ,三组之间比较 ,差异无显著性 (P >0 .0 5 )。结论　玉米秸作为垫料时 ,SD大鼠能保持较高的繁殖性能 ,可以作为大鼠垫料使用。

The Effect of a New Type of Bedding Made from Cornstalk on the Reproduce and Growth of Rats

Objective To observe the effect of beddings mate from different materials on the reproduce of SD rats and the growth of their young rats, and to discuss the feasibility of cornstalk as a new kind of laboratory animal bedding. Methods Some parameters of the reproduce of SD rats and the growth of their offspring were detected and analyzed when they were housed on different laboratory animal beddings made from cornstalk,wood shaving and toilet paper. Results There were no statistical differences among three groups in the number of littermates,the total birth weight and the growth of offspring(P>0.05). But there were significant statistical differences (p<0.05)in ablactation rate (the highest in the cornstalk group,reaching 99.79%)and the interval between two litters (31.41 days in the cornstalk group). Conclusions SD rats could keep high reproductive performance when housed on the bedding made from cornstalr, so cornstalk could be used for a new type bedding material for rats.