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鸡包涵体肝炎是由禽腺病毒引起鸡的急性传染病。
1病原
鸡腺病毒属于腺病毒科的Ⅰ群禽腺病毒，病毒粒子的直径为70～90纳米，无囊膜。病毒的核酸为双股DNA，核内复制，产生嗜碱性包涵体。Ⅰ群禽腺病毒的血清型较多，已报道从病鸡中分离到12个以上血清型。 相似文献
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鸡包涵体肝炎病原检测及病理学观察 总被引：1，自引：0，他引：1
取临床疑似鸡包涵体肝炎病例的肝组织,接种SPF鸡胚获取尿囊液,对获取的尿囊液进行PCR扩增和基因测序分析,成功分离并鉴定出1株鸡包涵体肝炎病毒,同时对送检病例采样进行病理组织学观察。将病死鸡肝组织研磨后,经尿囊腔接种9日龄的SPF鸡胚,用获得的尿囊液提取病毒DNA,成功获得DNA模板。根据已发表的Ⅰ群禽腺病毒hexon全基因的保守区域设计并合成1对引物,用这对引物对病毒的DNA模板进行PCR扩增,结果扩增出与目的基因大小一致的片段。病理学观察见肝组织淤血,细胞核浓缩,发生坏死,核内出现包涵体,伴有脂肪变性。测序分析表明,分离株与Ⅰ群禽腺病毒中血清4型相似性为98.6%,与其他血清型的相似性为68.7%~96.9%,与Ⅱ群禽腺病毒的鸡出血性肠炎病毒和Ⅲ群禽腺病毒的减蛋综合征病毒的相似性为44.6%,最终确定分离病毒为Ⅰ群禽腺病毒,为进一步鉴定和分离Ⅰ群禽腺病毒提供了依据。 相似文献
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<正>腺病毒感染是普遍的,需要注意的是,Ⅰ群禽腺病毒感染当中的包涵体肝炎不是一个多发病,常常需要在应激和其他病原感染存在的情况下发生。追踪至一个种鸡源或者污染疫苗,对该病毒感染有一定的诊断价值。1禽腺病毒的类别禽腺病毒的类别主要分为三群:Ⅰ群禽腺病毒,宿主包括鸡、火鸡、鸭、鹅、鸽、多种野禽等;主要病种包括心包积液-肝炎综合征(HS)、包涵体肝炎(IBH)。 相似文献
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贵州省鸡心包积液-肝炎综合征实验室诊断与病原基因分型 总被引：1，自引：0，他引：1
为证实鸡心包积液-肝炎综合征(hydropericardium hepatitissyndrome,HHS)在贵州省的流行、病原遗传变异和基因分型情况,对贵州首个疑似HHS病例进行实验室检测,并基于Hexon基因进行病原基因分型。结果显示:病例组织材料中PCR扩增获得约295 bp特异性Hexon基因片段;基于Hexon基因分型显示,本病例病原与国内外报道的禽腺病毒Ⅰ群血清4型(FAd V-4)同源性高达100%,与禽腺病毒Ⅰ群代表株CELO株(U46933)同源性达到64.5%;系统进化分析显示,FAd V-4贵州流行株与禽腺病毒Ⅰ群代表株CELO株和FAd V-4国内外流行株均处于同一进化分支,而与禽腺病毒Ⅱ群和禽腺病毒Ⅲ群处于不同进化分支。结果表明:本病例确为贵州省首次报道HHS病例,病原基因分型为禽腺病毒Ⅰ群血清4型,研究结果为贵州省HHS防控提供参考。 相似文献
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从山东省自然发生疑似鸡包涵体肝炎的商品肉鸡群中分离到4株病毒。这些毒株的复制可被5-溴尿嘧啶2-脱氧核苷抑制,表明毒株的核酸类型为DNA;对乙醚和氯仿有抵抗力;耐酸不耐碱;对热敏感。根据已发表的Ⅰ群禽腺病毒hexon基因的保守区域设计合成了2对引物。用这2对引物对4株病毒的核酸模板进行PCR扩增,结果均扩增出与设计片段大小一致的片段。测序分析表明,4株分离株为Ⅰ群禽腺病毒。用本实验室自制的Ⅰ群禽腺病毒12个血清型参考毒株的抗血清进行双向琼脂扩散试验,证明4株病毒中1株为血清2型,其余3株为血清8型。 相似文献
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禽腺病毒是一群高度多样的病原体,可引起多种疾病,近年来新发现的禽病中多数与不同型的禽腺病毒感染有关[1]。各种血清型的禽腺病毒都可引起肉鸡的包涵体肝炎,但仅禽腺病毒-4型是引起仔鸡包涵体肝炎-心包积水综合征(IBH-HPS)的特异病原体。IBH-HPS最早报道于1988年。Jaffery和K 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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