共查询到20条相似文献，搜索用时 62 毫秒
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《动物医学进展》2021,(8)
为了解我国猫杯状病毒(FCV)流行情况,于2019年1月～3月从京津地区4家宠物医院收集并检测眼鼻肛拭子297份,FCV、猫疱疹病毒1型和猫泛白细胞减少症病毒阳性率分别为15.49%、30.98%、30.64%。病原学调查结果显示,未免疫的小于1岁幼猫对FCV更易感。将FCV单纯阳性病料接种于F81细胞进行病毒分离,通过间接免疫荧光和测序分析等进行鉴定,分离的5株FCV分别命名为F2019TJ1株、F2019TJ2株、F2019TJ3株、F2019BJ1株和F2019BJ2株。研究显示,FCV对温度敏感,37℃存放4 d病毒含量下降1个滴度。对5株FCV的VP1基因进行测序分析,结果显示5株FCV核苷酸和氨基酸同源性分别为74.3%～87.3%和82.2%～92.2%,归属于2个不同毒株群,F2019BJ1株、F2019BJ2株和F2019TJ1株属于GI株群,与美国的UTCVM-H2株遗传距离较近;F2019TJ2株和F2019TJ3株属于GII株群,与国内的FCV-GD株遗传距离最近。研究结果为了解国内FCV流行及变异特点提供参考依据。 相似文献
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犬细小病毒分离鉴定及其基因型调查的基础研究 总被引：5，自引：0，他引：5
用F81细胞从不同地区送检的25份肠炎犬病料中分离出10株细小病毒，经形态学，理化学，生物学和分子病毒学等鉴定，结果这10株病毒均能在F81细胞上生长，产生细胞肿胀、变圆、破碎、脱落等细胞病变；病毒粒子呈立体对称，直径为20～24nm，无囊膜，抗氯仿，耐酸，耐热，能被5-IUDR抑制，可凝集猪、马、猫的红细胞，不能凝集人、鸡、豚鼠、兔的红细胞，HA试验能被抗CPV的特异性抗体所抑制，用犬细小病毒（CPV）特异性引物对10株病毒进行PCR扩增，结果扩增片段与阳性对照大小一致(771bp），用PV/犬/JL/1/02、PV/犬/BJ/1/99和PV/犬/GZ/1/02三个毒株进行人工感染犬试验，结果人工感染犬在接种后白细胞总数出现短期不同程度的下降，在攻毒后4～14d粪便PCR检查阳性，其中接种PV/犬/BJ/1/99的一只犬出现严重的肠炎症状并死亡，其余接种犬没有出现明显的临床症状，但血清抗体均升高（大于5倍），而对照组的白细胞总数和血清抗体没有明显的变化，粪便PCR检测阴性，表明所分离毒株能够感染犬，鉴定结果证明，CPV在我国犬群中仍广泛存在。 相似文献
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《中国预防兽医学报》2015,(9)
为研究虎源细小病毒的分子遗传特征,本研究从东北虎腹泻粪便样品中分离到一株虎源细小病毒(HRB-T2014)。对该分离株的VP2基因进行克隆测序分析,结果表明,HRB-T2014与虎源细小病毒FJ405225和HT-374的相似性最高,达到99.9%,而与犬源细小病毒相似性最低,仅为98.1%。VP2基因核苷酸序列系统发育树分析结果显示,HRB-T2014与虎源中国分离株位于同一进化分支,并与猫和貂细小病毒共处于猫细小病毒分支,而与犬细小病毒处于不同的进化分支。以上结果表明,HRB-T2014与猫源细小病毒具有共同的遗传起源。 相似文献
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为了解华中地区犬细小病毒2型(CPV-2)的流行趋势以及变异情况，本研究于2020年9月至2022年1月间采集华中地区的418份疑似感染犬细小病毒的粪便样品，通过PCR方法检测，利用F81细胞进行病毒分离、间接免疫荧光试验，并对分离病毒的VP2基因进行氨基酸序列及其同源性和遗传进化分析。结果显示，358份病料检测出CPV-2,阳性率为85.65%。病料接种F81细胞后，有23份阳性样品出现明显细胞病变，间接免疫荧光试验观察到明显荧光。VP2基因序列分析结果表明，分离毒株中有New-CPV-2a型12株、New-CPV-2b型5株、CPV-2c型6株。核苷酸同源性为97.9%～99.8%,氨基酸同源性为95.9%～100.0%。遗传进化分析结果显示，分离毒株与国内分离株、伊朗、巴西分离株亲缘关系较近，与意大利、日本、阿根廷分离株亲缘关系较远。本研究为华中地区犬细小病毒防控及研制高效疫苗奠定了基础。 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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