猪瘟的诊断与防治讲解.doc

本科生毕业论文 毕业论文题目 学生姓名 所在学院 兽医学院 专业及班级 1届专接本畜牧兽医1班 指导教师 完成日期 2016年1月日 班级：畜牧兽医接本一班姓名： 指导老师：张Diagnosis and control of swine fever Abstract This disease is a kind of infectious disease caused by classical swine fever virus, the main characteristics of swine fever is: A acute and septic change, parenchymal organ hemorrhage, necrosis and infarction; a chronic fibrinous necrotizing enteritis, often late paratyphoid and Pasteurellosis secondary. Different age, sex, breeds of pigs, sows and wild boar are susceptible to occur throughout the year. Clinical practice is difficult to control, the treatment effect is not ideal, even if cured, may become sick pigs and other health pigs infected with high mortality rate. Pig pig immune function decreased, the dose of the vaccine immunization program is not reasonable enough, other factors will cause swine fever. The disease spreads all over the world, China is more serious, most experts believe that the single disease caused economic losses in the pig industry in China is the biggest swine fever, almost all of our farms have fever, causing huge economic losses to the swine industry in china. Key words: Swine fever Infectious Diseases Mortality rate pig 综述 猪瘟就是由猪瘟病毒感染猪的高传染性疾病，又称经典猪瘟和古典猪瘟。这种病毒会引起被传染猪发烧，禁食，腹泻甚至死亡等各种病症。是一种急性或慢性，热线或高度接触性传染性疾病，特征为发生这种病的时间特别快、高热稽留和细小血管壁变性，引起全身泛发性小点出血，脾梗死1。有很高的发病率和病死率，而且不容易治愈。 1.1病原 猪瘟俗称烂肠瘟 ，其特征是：急性，呈败血性变化，实质器官出血，坏死和梗死；慢性呈纤维素性坏死性肠炎，后期常有副伤寒及巴氏杆菌病继发。猪瘟病毒归属为黄病毒科、瘟病毒属。猪瘟病毒具有囊膜的单股正链RNA病毒，病毒粒子具有二十面体的非螺旋形核衣壳正　文