鸡传染性法氏囊病中等毒力活疫苗NF8株病理致病性对比试验效果的研究与分析  

The Research and Analysis of the Pathological Pathogenicity Comparison Test Effect of IBD Moderate - virulent Live Vaccines NF8 Strain

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作  者:王志华 

机构地区:[1]内蒙古赤峰市巴林右旗驻大板镇动物卫生监督站,025150

出  处:《中国饲料添加剂》2016年第2期29-31,共3页China Feed Additive

摘  要:本试验用3种IBD疫苗分别免疫7日龄SPF鸡,免疫后分别于20天、40天扑杀,测定法氏囊重与体重比(囊重比),并观察法氏囊病理切片。结果发现这些疫苗在病理致病性上存在显著差异,其中1种疫苗有高致病性,1种疫苗有轻微致病性,1种疫苗正常无致病性。In this experiment,3 kinds of IBD vaccines were used to immune 7 -day- old SPF chicken. After immunization the chickens were killed on the 20 day and 40 day respectively, and then bursa weight / body weight ratio was detemined, bursal pathological section was ob- served. The results showed that there were significant differences in the pathogenesis of these vac- cines, of which 1 kinds of vaccines were highly pathogenic, 1 kinds of vaccines were slightly patho- genic, and the 1 vaccines were not pathogenic.

关 键 词:NF8 致病性 免疫保护指数 囊重比 病理评分 

分 类 号:S858.315.3[农业科学—临床兽医学]

 

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