摘要
将不同来源的鸡大肠杆菌梯度稀释后进行鸡胚致死率试验,探讨细菌毒力与细菌数量对鸡胚致死率的影响。结果表明,大肠杆菌菌数在100～1 000 CFU范围内,菌数与其致病力间相关性不显著（P〉0.05）,鸡胚死亡率表现为菌株毒力的影响。
After gradient dilution of avian E.coli from different sources,the chicken embryo lethality was tested. The influence of bacterial virulence and number on the chicken embryo lethality was discussed. The results showed that bacterial count of E.coli in the range of 100 CFU and 1 000 CFU, the P value（significance） between the bacterial count and their virulence is0.590 0.05.It is suggested that there is no obvious relationship between the number of bacteria and chick mortality,chicken embryo lethality showed virulence crash.
出处
《湖北农业科学》
2016年第7期1755-1757,1761,共4页
Hubei Agricultural Sciences
基金
国家自然科学基金青年项目(31302128)
国家级大学生创新创业训练计划创新训练项目(201410447039
201410447041)
关键词
大肠杆菌
细菌数量
致病性
E.coli
number of bacteria
pathogenicity
