共查询到19条相似文献,搜索用时 203 毫秒
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王伟杰 《河南畜牧兽医(综合版)》2019,(10):48-49
感染禽类的魏氏梭菌主要是A型魏氏梭菌,其次是C型魏氏梭菌,可分为临床型疾病和亚临床型疾病两种.临床型坏死性肠炎主要危害2~5周龄的雏鸡,临床特征为急性死亡和高死亡率,给养禽业带来巨大的经济损失.亚临床型疾病主要表现为肠黏膜局灶性坏死、肝炎或胆管性肝炎.同时,魏氏梭菌还能引起人类和其他动物发病.因此,对魏氏梭菌病的防治就显得尤为重要.本文主要讨论了雏鸡魏氏梭菌病的临床症状及病理剖检变化、发病原因,并提出有效防治措施,为该病的防治提供参考. 相似文献
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兔魏氏梭菌病,又称兔魏氏梭菌性肠炎,是由A型魏氏梭菌所产外毒引起的肠毒血病引起家兔急性水泻的一种急性传染病,发病兔致死率很高。现将一起肉兔发生兔魏氏梭菌性肠 相似文献
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肉兔魏氏梭菌病是由A型魏氏梭菌(产气荚膜梭菌)及其所产毒素引起的一种以消化道病症为主的急性肠道传染病。以剧烈腹泻为主要特征,发病急、病程短,一旦发病药物治疗效果不明显,病死率高达70%以上。笔者根据发病情况、临床症状、剖检病变和实验室检查等确诊了一起肉兔魏氏梭菌病,并提出了综合性防治措施,使该病得到有效控制。 相似文献
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兔魏氏梭菌病是由A型魏氏梭菌及其所产生的外毒素引起的肠道急性传染病,以剧烈腹泻和脱水死亡为主要特征。该文报道一例该病的诊断,并提出相应的防治措施。 相似文献
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兔魏氏梭菌病的诊治报告 总被引:1,自引:0,他引:1
兔魏氏梭菌病是由A型魏氏梭菌及其毒素引起兔的一种以消化道为主的全身性疾病,其特征是患兔水样腹泻和脱水死亡。该菌能产生强烈的α型内毒素,具有坏死、溶血和致死作用,有较强的毒性。介绍了兔魏氏梭菌病的发病情况、临床症状、剖检变化、实验室诊断、治疗及预防措施,以期为防治该病提供参考。 相似文献
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兔魏氏梭菌病是由A型魏氏梭菌及其毒素引起兔的一种以消化道为主的全身性疾病,其特征是患兔水样腹泻和脱水死亡。该菌能产生强烈的α型内毒素,具有坏死、溶血和致死作用,有较强的毒性。介绍了兔魏氏梭菌病的发病情况、临床症状、剖检变化、实验室诊断、治疗及预防措施,以期为防治该病提供参考。 相似文献
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魏氏梭菌病诊断方法研究进展 总被引:11,自引:0,他引:11
魏氏梭菌病是由魏氏梭菌引起的,可感染多种动物,以导致犊牛肠毒血症、绵羊羔痢疾、仔猪坏死性肠炎以及兔肠炎等为主要特征的一种重要的人兽共患传染病.该菌通常感染2月龄~10月龄且膘情较好的牛、羊,在其消化道产生大量原毒素,经胰蛋白酶激活变为毒素,从而进入血液,引发的疾病发生非常突然,与家畜"猝死症"有密切联系.病理变化以全身实质器官出血为突出特征,反刍动物以瓣胃、肠管最为明显.目前,已成功研制出浓缩氢氧化铝灭活苗、类毒素疫苗来控制此病.文章综述了近年来针对魏氏梭菌分型,病原、毒素及抗毒素的免疫学和分子生物学等方面诊断技术研究进展. 相似文献
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王志强 《畜牧兽医科学(电子版)》2021,(4):158-159
在牛羊养殖实践中,疾病是影响养殖效益的重要因素,总结牛羊养殖中的疾病种类,并就疾病防治进行研究有突出的现实意义。牛羊乳房炎是牛羊养殖中的常见疾病,对牛羊乳产量和质量有显著影响,在养殖中必须要关注此病防治。该文对牛羊乳房炎的发病原因、发病特点和规律进行总结,并就该疾病的中西兽医防治对策进行分析与讨论。 相似文献
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The pathogenicity for sheep and goats of the virus strain that caused acute rinderpest in cattle and domestic buffalo in Sri Lanka after an interval of over 40 years has been examined. The results show that it can cause overt clinical disease in goats, but only mild or unapparent infection in sheep. The disease was transmitted from infected sheep to in-contact susceptible sheep and calves. 相似文献
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吉林省黄牛“猝死症”的病因学研究 总被引:2,自引:0,他引:2
1994年以来,对吉林省黄牛“猝死症”的病因进行了多方面的研究,包括细菌学检验、病毒学检验、人工感染试验、毒物检验、牛毛硒元素分析及病尸病理形态学观察。结果表明,A型魏氏梭菌是主要病原菌,其他细菌有协同作用;牛冠状病毒或粘膜病病毒感染、缺硒等为本病的诱因 相似文献
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Six commercially available clostridial vaccines comprising one oil-emulsion, two alum-precipitated and three aluminum hydroxide adjuvanted preparations, each containing between two and seven antigenic components, were administered to groups of 10 rabbits and eight sheep in accordance with manufacturers' recommendations. Serum antitoxic values to Cl welchii beta, Cl welchii epsilon, Cl septicum, Cl oedematins and Cl tetani toxins were determined 14 days after completion of each vaccination course. The overall pattern of mean antitoxic values was found to be similar in sheep and rabbits, a vaccine eliciting a comparatively high antibody titre to any given antigen component in sheep also inducing a comparatively high titre in the corresponding group of rabbits. Similarly, comparatively poor responses in sheep were associated with poor responses in rabbits. The degree of variation in response within groups of animals was greater in sheep than in rabbits for all five antigenic components assayed. Sheep consistently developed higher titres than rabbits to Cl oedematins component but consistently lower titres to both Cl welchii beta and epsilon components irrespective of the type of vaccine used. The response of both species to Cl tetani antigen was similar in terms of serum antitoxic values. It was concluded that rabbits provide a suitable model for the assessment of potency of sheep clostridial vaccines. 相似文献
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由于今年我省降雨量偏多,部分地区已发生洪涝灾害,极易引发牛羊主要寄生虫病的暴发流行。为防止寄生虫病暴发造成重大经济损失,本文详细阐述了阻断牛羊主要寄生虫病传播的关键因素,并针对历年危害严重的东毕吸虫、肝片吸虫、胃肠道线虫和疥癣等几种主要寄生虫病的流行病学特点提出了综合防制措施,以期降低牛、羊主要寄生虫病的发生,提高牛、羊养殖业的经济效益。 相似文献
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Kedmi M Levi S Galon N Bomborov V Yadin H Batten C Klement E 《Veterinary microbiology》2011,148(2-4):408-412
Epizootic hemorrhagic disease virus (EHDV) is an Orbivirus. While not previously considered as an important disease in cattle, several EHDV serotypes (EHDV-6 and 7) have recently been implicated in disease outbreaks. The involvement of sheep in the epidemiology of EHDV is still not understood. In this study we compared the prevalence of antibodies to EHDV and bluetongue virus (BTV) in sheep to their prevalence in cattle after an outbreak of EHDV that occurred in Israel during 2006. Sixty-six sheep and lambs scattered in seven herds were compared to 114 cows and calves scattered in 13 dairy cattle herds, matched to the sheep herds by location. While antibody prevalence to EHDV was high in cattle (35.2% within the outbreak zone) no evidence of exposure to EHDV was found in sheep (p<0.0001). Antibodies to BTV were apparent in both cattle and sheep though in the former it was significantly higher (63.2%, 16.7% respectively, p<0.0001), suggesting higher exposure of cattle to biting Culicoides midges. Taken together, these results imply that sheep have a negligible role in the epidemiology of EHDV. 相似文献
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Elbers A Backx A van der Spek A Ekker M Leijs P Steijn K van Langen H van Rijn P 《Tijdschrift voor diergeneeskunde》2008,133(6):222-229
In August 2006 a major epidemic of Bluetongue (BT) occurred in north-western Europe, affecting The Netherlands, Belgium, Germany, Luxemburg, and the north of France. It was caused by Br virus serotype 8 (BTV-8), a serotype previously unknown to the EU. Although clinical disease is usually restricted to sheep, this virus also caused clinical disease in a small proportion of cattle. The last clinical outbreak of BT in The Netherlands occurred mid-December 2006. The delay between observation of the first clinical signs by the owner and reporting of a clinically suspect BT situation to the veterinary authorities was approximately 2 weeks. BTV-8-associated clinical signs were more prominent in sheep than in cattle, and the relative frequency of specific clinical signs was different in cattle and sheep. Morbidity and mortality rates were significantly higher among sheep than among cattle, and a higher proportion of cattle than sheep recovered from clinical disease. 相似文献