Abstract: Objective To investigate the hematological parameters of outbred colony New Zealand white rabbits at different ages. Methods Blood samples from 160 New Zealand white rabbits (Female, 80 and male, 80) in different age groups were analyzed with automatic blood cell analyzer. Result There was no statically significant difference between the blood samples of different age experimental closed colony New Zealand white rabbits in different sex sets (P>0.05). Significant differences (P<0.05) of hematological indexes except monocyte (P>0.05) were observed among New Zealand white rabbits in different age groups. Conclusion The outbred colony New Zealand white rabbits had stable biological characteristics and less difference among individuals. In this study, the biological hematologic parameters database for New Zealand white rabbits at different ages was established, which will be used as basic reference for New Zealand white rabbits experiment.

Key words: New Zealand white rabbits, Different ages, Hematological parameters