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20 0 1年 5月 ,武义县某猪场发生以仔猪腹泻、呕吐为主要症状的传染病。经临床观察、病理解剖和实验室诊断 ,确诊为猪传染性胃肠炎。现将情况报告如下。1 发病情况和临床症状2 0 0 1年 5月 1日上午 ,武义县某猪场一产仔舍 1头母猪发生腹泻 ,下午 1 1头仔猪先后出现呕吐、清水样腹泻 ,排泄物呈黄绿色或灰色 ,腥臭味。病猪精神不振 ,被毛蓬松 ,脱水现象明显。2日 ,6头母猪和 1 0 6头仔猪发病 ,8日该幢产仔舍的母猪和小猪先后全部发病。母猪经 3~ 7d先后康复 ,1 0日龄以内仔猪死亡率 1 0 0 %,1 0日龄以上仔猪死亡率2 0 %左右。2 病理变化1 0… 相似文献
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<正>1发病情况2007年11月13日,河北省平山县某养猪场从外地购进仔猪33头,母猪11头,育肥猪24头。11月17日,该场仔猪陆续出现精神不振、食欲减退、发热、喘气、腹泻等症状,后期衰竭死亡。引进母猪精神萎靡、发热,体温达41℃~42℃、流产、死胎。育肥猪发热,体温达40℃~42℃,食欲减退或不食,后期黄疸。严重者,后期衰竭而死亡,经病理剖检、实验室诊断,确诊为猪圆环病毒病与猪附红细胞体病混合感染。本次发病呈大面积发生,发病时间较短,引进仔猪发病率达90%以上,仔猪死亡率达85%以上。猪场猪只发病率在20%~30%,发病猪死亡率达80%。给该场造成了很大的经济损失。 相似文献
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本文针对发生腹泻疫情的某猪场开展了实验室检测和流行病学调查,实验室检测表明该疫情的病原为猪流行性腹泻病毒。流行病学调查显示,此次腹泻疫情于2013年11月份开始暴发,2014年3月份结束,发病猪的种类具有明显的次序,育肥猪首先发生,其次是母猪,新生仔猪最后发病;发病率和死亡率与猪的种类、日龄密切相关,育肥猪和母猪发病后仅出现腹泻症状而不死亡,仔猪发病后腹泻症状明显而且死亡率随着年龄的增长急剧下降,3日龄以下仔猪死亡率可达100%,1周龄仔猪死亡率降至72.73%,12日龄仔猪死亡率仅有10%。对猪场风险因素分析表明,饲料车辆直接进入猪场、卖猪车辆与饲养人员接触、粪便通道没有封闭、饲养人员流动等是影响此次腹泻疫情的高风险因素,通过降低高风险因素很好地控制了疫病。 相似文献
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为了防治猪支原体肺炎,提高养猪业的经济效益,笔者对本县6个规模养猪场进行了调查,并采取了疫苗和药物的综合防治措施,取得了满意的效果。1流行病学调查1.1易感动物各种年龄的猪都可发病,但哺乳仔猪和断奶仔猪发病率和死亡率较高,其次是怀孕后期及哺乳母猪。在调查的6个规模猪场中,有两个猪场,哺乳仔猪和断奶仔猪发病269头,死亡247头,死亡率91.8%;育肥猪321头,死亡4头,感染率100%,死亡率1.2%。1.2传染源母猪和初产母猪是支原体携带者,病原体在扁桃体上定殖,而不被检出可达数周、数月、数年,哺乳仔猪常被带菌母猪感染。1.3传播途径呼吸道是该… 相似文献
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采用进口ELISA试剂盒检测规模猪场母猪、保育猪血清中猪瘟、猪蓝耳病、猪伪狂犬病和猪圆环病毒病等的抗体水平.结果表明,被检测规模猪场的猪瘟抗体合格率为65.2%,特别是保育阶段仔猪抗体水平比较低,只有55.3%.伪狂犬病野毒抗体阳性率达19.01%,母猪与保育猪之间差异不大;而伪狂犬病gB抗体阳性率母猪可达92.6%,保育仔猪只有80%.PRRS抗体水平母猪与仔猪之间差异不显著,分别为88.4%和85.9%,这些场都有注射PRRS弱毒苗,说明该疫苗免疫后抗体转阳率比较高.圆环病毒2型的抗体检测阳性率达91.2%. 相似文献
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猪传染性胃肠炎和流行性腹泻是病毒引起的急性、高度传染性的消化道传染病。病的特征为呕吐、腹泻和脱水。不同年龄和品种的猪均能发病,猪场一旦发病,损失惨重。2006年1月,本区某规模猪场突然发生本病,依据动物机体体液因素参与非特异性免疫反应和产生干扰素的生物学作用机理,笔者采用鸡新城疫Ⅰ系苗治疗仔猪腹泻症取得了较好效果。现简介如下:1发病情况2006年1月初,本区某一600头母猪规模猪场母猪突然发生呕吐,有的表现食欲减退或废绝,体温38~39℃。2d后同一栏舍约有15%怀孕母猪发生腹泻,粪便恶臭,30%怀孕母猪少食或拒食。紧接着,有一栋分… 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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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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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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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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