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《中国预防兽医学报》2017,(7)
为了解新疆伊犁地区的马鼻肺炎、马腺疫及马流产沙门菌病的流行现状和特点,本研究从新疆伊犁地区养马最为集中的10个乡镇和3个国有马场采集了818份血清样品。分别采用ELISA法和微量凝集法进行马疱疹病毒(EHV)、马腺疫链球菌(S.equi)和马流产沙门菌(S.abortus)的抗体检测,并应用统计学方法从年龄、性别、地域及养殖规模等方面对影响这3种病感染的风险因素进行了分析。检测结果显示该地区EHV抗体阳性率为28.85%,S.equi抗体阳性率为24.69%,S.abortus抗体阳性率为25.31%。性别和年龄对马鼻肺炎感染影响显著(p0.05)。地域和年龄对马链球菌抗体阳性率的影响显著(p0.05);地域对马流产沙门菌抗体阳性率的影响显著(p0.05)。马疱疹病毒(EHV)和马腺疫链球菌(S.equi)的混合感染率较高。本研究为新疆地区马的这3种传染病有效防控提供了调查数据。 相似文献
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《畜牧与兽医》2016,(8):91-94
为了解新疆伊犁地区马群马流感病毒(equine influenza virus)、马疱疹病毒(equine herpesviruses)以及马沙门菌(Salmonellosis equinum)、马链球菌(Streptococcus equi)的感染情况,采用酶联免疫吸附试验及血凝抑制试验对采自新疆伊犁地区7个马场的277份马血清进行抗体水平检测。结果显示:4种病原中,沙门菌血清抗体阳性率最高26.71%(74/277),马疱疹病毒最低15.16%(42/277);各马场之间马流感病毒、马疱疹病毒,以及沙门菌、马链球菌抗体阳性率差异性极显著(P0.01);不同马场之间马沙门菌和马链球菌双抗体阳性率差异性极显著(P0.01);不同马场之间马鼻肺炎和马流感双抗体阳性率差异性极显著(P0.01)。结果表明:新疆伊犁部分马群存在不同程度的马流感病毒、马疱疹病毒、马沙门菌以及马链球菌的感染。此次调查数据可为新疆地区部分马病的防控工作及马产业的健康发展提供参考。 相似文献
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为明确岔口驿马产区内马腺疫(equine strangles)和马鼻肺炎(equine rhinopneumonitis, ER)流行情况，保障岔口驿马产业健康稳定发展，特进行血清学调查。按随机采样方式，采集甘肃省天祝县16个乡镇的岔口驿马血清510份，用ELISA方法进行马链球菌(Streptococcus equi,S.equi)和马疱疹病毒(Equine herpesviruse, EHV)抗体检测。结果显示，510份马血清中检测出S.equi抗体阳性血清73份，总阳性率为14.31%;检测出EHV抗体阳性血清66份，总阳性率为12.94%。其中，1岁龄以内马匹S.equi和EHV抗体阳性率分别为1.04%、8.33%,1岁至3岁龄马匹抗体阳性率分别为27.19%、14.04%,3岁至5岁马匹抗体阳性率分别为17.33%、14.67%,5岁以上马匹抗体阳性率分别为10.00%、13.33%,且存在同时检测出S.equi和EHV抗体阳性的情况，混合抗体阳性率为6.27%。岔口驿马产区应针对马腺疫和马鼻肺炎，因地制宜，科学制定防控措施。 相似文献
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为了解新疆地区马衣原体病的流行现状和特点,本研究于2013年~2016年从新疆伊宁、阿勒泰、巴州、第六师、乌鲁木齐市及昌吉州等地收集826份马血清样品,采用间接血凝试验(IHA)进行衣原体抗体检测,对不同品种、性别、饲养方式及地域来源马的衣原体抗体阳性率进行统计分析。结果显示,2013年~2016年,马衣原体抗体阳性率依次为0、2.41%、7.30%和3.19%,平均阳性率为4.26%。其中,纯血马、焉耆马、哈萨克马和伊犁马衣原体抗体阳性率分别为8.98%、3.13%、4.23%和1.52%;公马与母马衣原体抗体阳性率分别为41.90%和2.30%;伊宁、阿勒泰、巴州、第六师、乌鲁木齐市和昌吉州马衣原体抗体阳性率分别为2.56%、28.6%、3.13%、0、1.71%和4.00%;不同品种、性别和地域间马衣原体感染率差异显著(p<0.05)。纯血种公马衣原体抗体阳性率显著高于母马(p<0.05);规模化养殖场马阳性率低于散养马,并且引进马中衣原体阳性率显著高于本土马。本研究提示在马匹引种过程中,检疫部门应该酌情开展衣原体的感染检测,对促进马产业健康发展具有重要意义。 相似文献
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为了解伊犁部分地区马场感染马泰勒虫(Theileria equi)的情况,试验将重组原核表达质粒pGEX4T-1/EMA1转化至大肠杆菌菌株BL21表达系统中,诱导表达56 ku的重组蛋白(EMA1);经KCl方法切胶纯化后作为间接ELISA包被抗原,对伊犁州六个不同地区随机采集的样品(n=352)进行马泰勒虫抗体的检测。结果表明:以GST-EMA1蛋白作为包被抗原建立的间接ELISA法可明显区分马泰勒虫阳性血清和健康马血清。在所检测的血清样品中,马泰勒虫血清抗体阳性率为7.4%(26/352),其中乌尊布拉克乡的马泰勒虫血清抗体阳性率为7.3%(4/55)、昭苏镇的马泰勒虫血清抗体阳性率为13.2%(10/76)、萨尔阔布乡的马泰勒虫血清抗体阳性率为8.2%(6/73)、察汗乌苏乡的马泰勒虫血清抗体阳性率为6.5%(4/62)、喀拉苏乡的马泰勒虫血清抗体阳性率为2.0%(1/49)、喀夏加尔乡的马泰勒虫血清抗体阳性率为2.7%(1/37);伊犁州等六个地区马场马泰勒虫血清抗体阳性率随年龄而改变,其中7岁马匹的马泰勒虫的血清抗体阳性率最高。说明马泰勒虫在伊犁地区马匹中普遍存在,应该加强对该病的检测、监控。 相似文献
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为了解伊犁州马属动物马流产沙门氏菌的流行现状,采集伊犁州昭苏县、尼勒克县、察布查尔锡伯自治县的母马、流产马、驴血清和全血样品共982份,分别用ELISA、荧光PCR方法对马流产沙门氏菌病进行血清抗体和病原学检测。荧光PCR检测结果显示：察布查尔锡伯自治县驴马沙门氏菌病阳性率为29.7%;马流产沙门氏菌病阳性率为2.5%,其中,昭苏县马流产沙门氏菌病阳性率为1%、尼勒克县马流产沙门氏菌病阳性率为4.1%、察布查尔锡伯自治县马流产沙门氏菌病4%;流产马、驴马流产沙门氏菌马流产沙门氏菌病阳性率为92.5%;结果表明：马流产沙门氏菌病在这些养殖场点得到了很好的预防,但是马流产沙门氏菌引起的马流产依然较为普遍,特别是驴的马流产沙门氏菌病感染率较高,需要定期对马流产沙门氏菌病进行监测并加强防控。本调查为伊犁州马属动物马流产沙门氏菌病的防控提供了数据支持。 相似文献
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《黑龙江畜牧兽医》2019,(24)
为了解巴州地区犊牛腹泻的流行情况,分别抽检114头腹泻犊牛(本地杂交黄牛、黑白花奶牛、新疆牦牛)的脏器、血清和粪便样品共342份,对脏器进行细菌的分离培养鉴定,采用ELISA方法对血清进行副结核抗体检测,对粪便进行轮状病毒、冠状病毒、病毒性腹泻/黏膜病病毒的病原检测和寄生虫的分离鉴定。结果表明:沙门氏杆菌阳性率为42.1%,大肠杆菌阳性率为38.6%,病毒性腹泻病毒阳性率为24.6%,轮状病毒阳性率为21.9%,冠状病毒阳性率为14.0%,球虫阳性率为13.2%,隐孢子虫阳性率为14.0%。肉牛、牦牛细菌阳性率显著高于病毒和寄生虫(P0.05),奶牛病毒性腹泻病毒和轮状病毒阳性率显著高于细菌和寄生虫阳性率(P0.05)。说明巴州地区犊牛腹泻主要由沙门氏杆菌、大肠杆菌引起,不同犊牛品种感染的病原有差异。 相似文献
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《黑龙江畜牧兽医》2015,(12)
为了解新疆天山马鹿戊型肝炎病毒(HEV)的感染情况,试验采用双抗原夹心酶联免疫吸附试验(ELISA)法对新疆地区3个集约化鹿场和1个散养鹿场的410份马鹿血清进行抗戊型肝炎病毒Ig G抗体检测,比较不同鹿群及不同年龄段马鹿HEV抗体阳性率的差异。结果表明:所检测的血清总的抗体阳性率为32.4%(133/410),4个鹿群的抗体阳性率依次为:32.5%(65/200)、46.0%(46/100)、21.0%(20/95)、13.3%(2/15),且差异极显著(P0.01);3个年龄段鹿群的抗体阳性率依次为:9.3%(7/75)、43.8%(92/210)、27.2%(34/125),且差异极显著(P0.01)。说明新疆天山马鹿存在HEV的自然感染。 相似文献
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Rhodococcus equi is an important cause of subacute or chronic abscessating bronchopneumonia of foals up to 3-5 months of age. It shares the lipid-rich cell wall envelope characteristic of the mycolata, including Mycobacterium tuberculosis, as well as the ability of pathogenic members of this group to survive within macrophages. The possession of a large virulence plasmid in isolates recovered from pneumonic foals is crucial for virulence. The plasmid contains an 27 kb pathogenicity island (PI) that encodes seven related virulence-associated proteins (Vaps), including the immunodominant surface-expressed protein, VapA. Only PI genes are differentially expressed when the organism is grown in macrophages in vitro. Ten of the PI genes, including six Vap genes, have signal sequences, suggesting that they are exported from the cell to interact with the macrophage. Different PI genes are regulated by temperature, pH, iron, oxidative stress and probably also by magnesium, all environmental changes encountered after environmental R. equi are inhaled in dust and are ingested into macrophages in the lung. The basis of pathogenicity of R. equi is its ability to multiply in and eventually to destroy alveolar macrophages. Infectivity is largely or exclusively limited to cells of the monocyte-macrophage lineage. Current evidence suggests that infection of foals with virulent R. equi results in some foals in subversion of cell-mediated immunity and development of an ineffective and sometimes lethal Th2-based immune response. Significant progress has been made recently in the development of R. equi-E. coli shuttle vectors, transformation and random and site specific mutagenesis procedures, all of which will be important in molecular dissection of the mechanisms by which R. equi subverts normal macrophage killing mechanisms and cell-mediated immunity. 相似文献
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Katy Webb Colin Barker Tihana Harrison Zoe Heather Karen F. Steward Carl Robinson J. Richard Newton Andrew S. Waller 《Veterinary journal (London, England : 1997)》2013,195(3):300-304
Genome sequencing data for Streptococcus equi subspecies equi and zooepidemicus were used to develop a novel diagnostic triplex quantitative PCR (qPCR) assay targeting two genes specific to S. equi (eqbE and SEQ2190) and a unique 100 base pair control DNA sequence (SZIC) inserted into the SZO07770 pseudogene of S. zooepidemicus strain H70. This triplex strangles qPCR assay can provide results within 2 h of sample receipt, has an overall sensitivity of 93.9% and specificity of 96.6% relative to the eqbE singlex assay and detects S. equi at levels below the threshold of the culture assay, even in the presence of contaminating bacteria. 相似文献
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H. C. Schott II M. M. Esser C. G. Pirie A. P. Pease J. S. Patterson S. M. Reed 《Equine Veterinary Education》2020,32(10):e194-e198
We previously described successful treatment, including surgical drainage, of a Streptococcus equi subspecies equi brain abscess that caused severe neurological deficits in a 7-year-old Quarter Horse mare. This report details the long-term successful outcome of the case, findings of a magnetic resonance imaging (MRI) study performed 14 years after surgery and necropsy findings 18 years after initial treatment. Despite persistent cerebral and midbrain lesions detected by MRI and at necropsy, the mare returned to serviceable function within a year of initial treatment and had a successful performance career for over 10 years until carpal arthritis prompted retirement. This case demonstrates that brain abscess in horses can be successfully managed by combined medical and surgical treatment. 相似文献
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Real-time PCR for detection and differentiation of Streptococcus equi subsp. equi and Streptococcus equi subsp. zooepidemicus 总被引：1，自引：0，他引：1
Strangles is a contagious equine disease caused by Streptococcus equi subsp. equi. In this study, clinical strains of S. equi (n=24) and Streptococcus equi subsp. zooepidemicus (n=24) were genetically characterized by sequencing of the 16S rRNA and sodA genes in order to devise a real-time PCR system that can detect S. equi and S. zooepidemicus and distinguish between them. Sequencing demonstrated that all S. equi strains had the same 16S rRNA sequence, whereas S. zooepidemicus strains could be divided into subgroups. One of these (n=12 strains) had 16S rRNA sequences almost identical with the S. equi strains. Interestingly, four of the strains biochemically identified as S. zooepidemicus were found by sequencing of the 16S rRNA gene to have a sequence homologous with Streptococcus equi subsp. ruminatorum. However, they did not have the colony appearance or the biochemical characteristics of the type strain of S. ruminatorum. Classification of S. ruminatorum may thus not be determined solely by 16S rRNA sequencing. Sequencing of the sodA gene demonstrated that all S. equi strains had an identical sequence. For the S. zooepidemicus strains minor differences were found between the sodA sequences. The developed real-time PCR, based on the sodA and seeI genes was compared with conventional culturing on 103 cultured samples from horses with suspected strangles or other upper respiratory disease. The real-time PCR system was found to be more sensitive than conventional cultivation as two additional field isolates of S. equi and four of S. zooepidemicus were detected. 相似文献
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Ecology of Rhodococcus equi 总被引：7，自引：0，他引：7
A selective broth enrichment technique was used to study the distribution of Rhodococcus equi in soil and grazing animals. Rhodococcus equi was isolated from 54% of soils examined and from the gut contents, rectal faeces and dung of all grazing herbivorous species examined. Rhodococcus equi was not isolated from the faeces or dung of penned animals which did not have access to grazing. The isolation rate from dung was much higher than from other samples and this was found to be due to the ability of R. equi to multiply more readily in dung. Delayed hypersensitivity tests were carried out on horses, sheep and cattle, but only horses reacted significantly. The physiological characteristics of R. equi and the nature of its distribution in the environment suggested that R. equi is a soil organism. 相似文献
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