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对猪瘟免疫失败原因和对策的探讨 总被引：6，自引：0，他引：6
对猪瘟免疫失败原因和对策的探讨易健和（湖南省零陵地区畜牧水产总站，冷水滩４２５１００）猪瘟免疫接种是防制猪瘟的重要手段。然而，在猪瘟免疫接种实践中，打了猪瘟疫苗，仍发猪瘟病，即所谓猪瘟免疫失败的现象时有发生。造成猪瘟免疫不成功的因素很多，主要有如下几... 相似文献
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近年来，实施免疫耳标、免疫证和免疫档案管理制度．极大地提高了猪瘟的免疫密度，有效地控制了猪瘟的暴发流行。虽然临床上典型猪瘟已很少发现，但非典型猪瘟却时有发生，猪瘟的防制任务越来越艰巨。随着生猪生产规模化程度的日益提高．对猪瘟防疫的要求也越来越高，这里就猪瘟的防制，笔者谈几点看法。 相似文献
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猪瘟（Hogcholera）是由猪瘟病毒引起的一种热性高度接触传染性疾病，各个年龄阶段的猪群，不分品种对该病均易感，目前仍然是危害我国养猪业的主要传染病之一。猪瘟病毒只有一个抗原型，但是研究证明，猪瘟病毒存在血清学变种，包括强毒株、弱毒株和引起慢性猪瘟的低毒力毒株。我国研制的兔化猪瘟弱毒苗有效地控制了猪瘟的大面积流行。但是近年来，猪瘟的流行形式、发病特点和病理变化都发生了变化，主要表现为非典型猪瘟。非典型猪瘟给兽医工作者控制该病提出了挑战。本研究分别应用猪瘟弱毒、强毒单抗纯化的酶联抗原建立的间接ELISA诊断试剂盒， 相似文献
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猪瘟是当前畜禽主要疫病之一，前几年对猪瘟免疫抗体消长规律及免疫程序方面进行了研究，取得了一些成效，但猪瘟特别是肉猪的免疫抗体仍不能达到相当理想效果，近年来养猪场（户）猪瘟时有发生，并造成了不少经济损失，猪瘟的免疫抗体急需进一步提高。为了解决目前生产实际存在的问题，在原有研究的合理猪瘟免疫程序基础上， 相似文献
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Beran GW 《Preventive veterinary medicine》2008,86(3-4):198-207
When early people made their appearance, zoonotic infectious diseases were already waiting, but epidemic diseases did not appear in human history until people began to live in large numbers under conditions of close contact, mainly during the last 10,000 years. Disease has decimated urban populations, conquered armies, and disrupted society. The focus here is on (1) the plague of Athens and the Black Death; (2) smallpox, influenza, and rabies; (3) avian influenza prion diseases, and foot & mouth disease; and (4) emerging and re-emerging diseases. All have veterinary public health associations. In Athens, Greece, in 430 BC, when the Spartans ravaged the countryside, hordes crowded into Athens so that orderly movements, space in which to live, and adequate supplies of food became impossible. Crowding of any population fosters disease transmission; chaos and disorder enhance it all the more. Out of northern Egypt came a terrible plague from across the Mediterranean Sea. The identity of the plague of Athens remains unsure, but the well-considered conclusion is Rift Valley Fever, a mosquito borne, viral zoonosis. The Black Death, also called the Plague, raged in Asia for centuries. In 1347, the Black Death was brought by a ship out of Asia to Sicily. The scenes of devastation were repeated throughout Europe, with 90% or more of the people dying in city after city. Influenza, too, has been a cause of periodic human epidemics, but the great pandemic of influenza occurred in the last months of World War I. In the years of highest occurrence, more than half the world's population became clinically infected. If veterinary public health had been born earlier, it could have led to elucidating the epidemiology of influenza and the plagues of Athens, Europe, and Asia. In turn, smallpox had also caused continual tragedy. In 1796, Edward Jenner began to harvest pustules of cowpox from children or infected cows and inject them into susceptible children. In 1980, the World Health Organization declared that smallpox had been eliminated from the world. Rabies, though, still strikes terror. A number of animal diseases, broadly termed emerging and re-emerging diseases, need surveillance because they have the potential to impact human health. From late in 2003 to 2007, the highly pathogenic H5N1 influenza virus in poultry infected at least 121 people and caused 62 deaths in four countries. The prion diseases, too, all have very high numbers in concentrated contacts. To control these diseases, veterinary public health is essential, with diagnosis, epidemiological surveillance, clinical manifestations, and prevention as primary measures. 相似文献
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Dekker A Dercksen D Snoep J van Wuyjckhuise L 《Tijdschrift voor diergeneeskunde》2007,132(18):695-701
On 26th of july 2007 a new case of bluetongue was notified in the Netherlands and on 2nd of august 2007 foot-and-mouth disease was diagnosed in Surrey, England, which raised the threat of having both infections simultaniously in one area. Bluetongue and foot-and-mouth disease have a different pathogenesis, but symptoms may resemble each other at a later stage of infection. The pathogenesis and possible clinical symptoms of both infections are discussed and illustrated with pictures. 相似文献
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在动物的异常行为中以刻板行为最为常见,而咽气癖又是马最常见的口部刻板行为之一。作者就咽气癖在生理方面和心智方面对马体产生的影响、行为基础、诱因的研究进展及常见的防治措施进行综述。 相似文献
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近几年,世界饲用添加剂市场增长较快,预计今后将进一步增长,据世界粮农组织(FAO)首领会议的倡议,到2015年,将使世界营养不良的人口削减一半,其间,肉制品将会以每年2％的速度增长,特别是加快猪肉和禽肉增长。这将促进世界添加剂,尤其是蛋氨酸和赖氨酸需求量的增加。 相似文献
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