鸭传染性浆膜炎灭活疫苗比较研究

来源 :中国预防兽医学报 | 被引量 : 0次 | 上传用户:wuyu9603
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
将重庆地区分离鉴定的 2株鸭疫里氏杆菌培养、灭活 ,加入佐剂制成蜂胶、氢氧化铝和油乳剂灭活疫苗 ,分别免疫5日龄雏鸭。结果表明疫苗是安全的 ,经一次免疫后 10天的保护率分别是 70 %、5 0 %、75 % ,15天后的免疫保护率分别是80 %、75 %、10 0 % ;经 2次免疫后 7天的保护率分别是 10 0 %、10 0 %、89% ,10天后的保护率均达到 10 0 %。
其他文献
With the development of the monitoring technology,it is more and more common that the system is continuously monitored.Therefore,the research on the maintenance
<正>城市总体规划作为一项社会建制,始终处于不断变革的进程之中,这既是针对规划实践中出现的问题而展开的,也是应对社会需求和制度演进的需要来推进的。因此,总体规划的改革
New models for image decomposition are proposed which separate an image into a cartoon, consisting only of geometric objects, and an oscillatory component, cons
高校基层党建工作是高校工作的重要组成部分,在高校建设中起到战斗堡垒作用。全国高校党建工作会议从六个方面对高校基层党组织建设科学化提出要求。党的群众路线教育实践活
This paper focuses on the problem of non-fragile guaranteed cost control for a class of T-S discrete-time fuzzy bilinear systems(DFBS).Based on the parallel dis
An extended compromise ratio method(CRM) based on fuzzy distances is developed to solve fuzzy multi-attribute group decision making problems in which weights of
The elements of network profile are proposed.Based on the network traffic distribution model,the network profile includes the application request rate,the branc
A kind of turbo joint detection scheme based on parallel interference cancellation (PIC) is studied; then, the eigenvalues of iteration matrix is deeply analyze
本文从教育历史演进的回溯和美国创业教育理念的探析,指出高等教育从社会生产边缘向社会生产中心回归是知行合一实现的进步,正是以知行合一哲学观建立起来的美国创业教育理念
Fuzzy c-means(FCM) algorithm is one of the most popular methods for image segmentation.However,the standard FCM algorithm is sensitive to noise because of not t