两种脾毒浓度对猪瘟活疫苗原料兔利用率的影响

将原料兔随机分成两组（A、B），每组各4772只。 A组接种猪瘟活疫苗种毒，每毫升含0.05 g猪瘟兔化脾毒；B组接种的种毒，每毫升含0.02 g猪瘟兔化脾毒。每组分成30个批次，每个批次确定一个反应率。结果表明，A组30个批次的平均反应率（等同利用率）为90.49%，变动幅度为±7.0%；B组的平均反应率为67.71%，变动幅度为±16.24%，差异极显著。同时，A组的变异系数低于B组，表明A组利用率批间稳定性优于B组。

Effect of two kinds of lapinized spleen virus concentration on utilization rate of raw material rabbit for production of hog cholera live vaccine

The raw rabbits were randomly divided into two groups (A, B), each group has 4 772 rabbits.The rabbits of group A were vaccinated with HCLV, contained 0.05 g per mil spleen tissue of rabbit;the rabbits of group B were vaccinated with HCLV, contained 0.02 g per mil spleen tissue of rabbit;Each group were subgrouped into 30 randomly, each subgroup could get one response rate. The results showed that the average response rate of 30 subgroups in group A was 90.49% , the changing range was ±7.0%.The average response rate of 30 subgroups in group B was 67.71%, the changing range was ±16.24%.The analysis showed a significant difference. The confficient of variation of group A is lower than that of group B, which showed that the stability of utilization rate in group A was better than that in group B.