关键词: 实验动物垫料, 玉米芯

Abstract: Objective To develop a scientific bedding-changing procedure to replace the wood shavings with corn cob.Methods Two groups of SD rats(weight about 500 g,n=72 and 200 g,n=24,respectively) and 1 group of(BALB/c) mice(weight 35 g,n=24) were used,and ammonia concentration,hygroscopicity of bedding as well as bedding and fur cleanliness under different conditions were evaluated.Results and Conclusion The present study indicates that volumetric absorbencies of corn cob con ammonia is better than that of wood shavings,and the cages bedded with corn cob keep a longer bedding-changing interval.

Key words: Laboratory animal, Corn cob, Wood shavings