共查询到20条相似文献,搜索用时 31 毫秒
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当前欧洲爆发的经典型猪瘟可能导致千百万头猪被屠宰,这表明了此病对于养猪业的重要性。由于采用屠宰法作为一种防制措施,而由此造成的损失并不总是能得到补偿,所以此病的爆发常常造成众多的养猪者从此放弃养猪生涯。所以,无怪乎许多养猪者以至许多国家都会提出这样的... 相似文献
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2003年4月,大庆市让湖路区某规范化猪场发生一种主要表现怀孕母猪高热、流产和产出死胎、弱仔等繁殖障碍病症的传染病,流产率高达37%,经临床观察和实验室检查,确诊为繁殖障碍型猪瘟,现将诊治过程报告如下:1主要临床症状病初怀孕母猪食欲下降,粪便干结,发热,体温达40~41℃,有的呼吸急促,流产主要发生在怀孕后期,死胎出现比例最高,死胎大小与正常同期胎儿大小相近,尸体表面无明显症状,其次为木乃伊胎和畸形胎,其他为产出弱仔猪。全窝流产少见,多为一窝中有几个至半数发生,存活猪除弱仔猪基本于一周内死亡外,其余能健康生长。患病母猪存在较大… 相似文献
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高静 《畜牧兽医科技信息》2004,(9):32-32
2004年4月.兰州市城关区某养殖户饲养的156头猪相继发病.大批死亡。先后发病86头,发病率55.1%.死亡51头,病死率为59.3%。发病后多数在1-4d内死亡,发病猪不受年龄、性别影响.均可发病.尤以小猪为甚。经流行病学、临床症状、病理剖检和实验室诊断确诊为猪瘟。现介绍如下。 相似文献
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猪瘟一直以来是威胁我国养猪健康发展的重要疾病。近年来,在一定程度上给我国养猪业造成了一定损失。现笔者根据多年实践对猪瘟发生的新情况作一阐述,供参考。 相似文献
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Classical swine fever: the global situation 总被引:27,自引:0,他引:27
Edwards S Fukusho A Lefèvre PC Lipowski A Pejsak Z Roehe P Westergaard J 《Veterinary microbiology》2000,73(2-3):103-119
A historical and current perspective is given of classical swine fever and its impact on pig production in different regions of the world. Data were obtained from a variety of sources including returns to the Office International des Epizooties, official government reports, other published material and local information through personal contacts. The disease has been recognized for about 170 years and efforts to control it by official intervention began in the nineteenth century. Despite this it remains a lingering problem in many parts of the world where it has both, an economic impact on swine production and a constraining effect on trade due to the measures necessary to prevent spread. 相似文献
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de Groot H 《Tijdschrift voor diergeneeskunde》2006,131(14-15):540-541
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Hofmann MA Thür B Vanzetti T Schleiss W Schmidt J Griot C 《Schweizer Archiv für Tierheilkunde》1999,141(4):185-190
In May 1998, wild boars with classical swine fever (CSF) symptoms were detected in the southern part (Canton Ticino) of Switzerland. CSF virus was isolated from the submitted samples and RT-PCR followed by direct nucleotide sequencing of the 5' non-translated region showed that this virus was identical to the isolate previously recognized in wild boars from the area of Varese (Italy). In most animals, antibodies to CSF virus were detected as well. An immediate measurement was taken by limiting the movement of pigs and identifying both risk and surveillance zones. In order not to disturb potentially infected wild boars within their habitat a complete hunting prohibition for 2 months was enforced. The different possibilities of the control of CSF outbreaks in wild boars are discussed. 相似文献
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9株猪瘟分离毒株的致病特性 总被引:4,自引:0,他引:4
采用9株临床表现强、中、低致病特点的猪瘟野毒分离株第3代细胞毒作为种毒,按3mL/头剂量分别注射猪瘟抗原及抗体阴性猪,再用上一代传代猪发病后的血毒作为下一代接毒用种毒接种试验猪1头或2头,或上一代传代猪发病后,同圈放入1头或2头试验猪进行同居感染.如此进行,GDGZ1/95、BJCY1/96和JL1/94传至8代;FJFQ1/99传至7代;HeBHH1/95、HeNBY1/96、BJTX3/96、GXBH1/98和HeNXH2/98传至3代.结果显示:上述分离株传至3~5代过程中均表现出毒力增强的趋势,从3~5代传代到8(7)代的过程中毒力进一步增强并保持稳定,且均超过了标准石门强毒株的发病特点.所有试验猪均出现较典型的猪瘟临床症状,解剖后均表现出不同程度的病理变化,死后或解剖后的各种脏器经HCFA检查均为强阳性,这种现象进一步证实了猪是猪瘟病毒的敏感动物,各毒株之间毒力没有明显差异.对其中7株分离株传代血毒部分代次E2基因主要区域进行序列分析,结果仅GDGZ1/95株从F1~F8代中的F6代有2个核苷酸的差异,引起1个相应氨基酸的变异,其余毒株的不同代次没有碱基发生变异,初步说明猪瘟病毒基因型表现相对的稳定性. 相似文献