共查询到20条相似文献,搜索用时 93 毫秒
1.
2.
3.
4.
湖北省猪细小病毒感染血清学调查报告 总被引:4,自引:0,他引:4
采用微量血凝抑制试验对湖北省七个地区62个猪场进行了猪细小病毒感染的血清抗体检查,在1086价猪血清中检出阳性猪726份,阳性率66.86%。在检查不同月龄猪群感染猪细小病毒的血清中,发现1-3月龄的阳性率为54.55%,4-6月龄的阳性率为47.50%,7-8月龄的阳性年为1810%,成年种猪的阳性率为82.23%.证实了猪细小病毒感染的普遍性和不同月龄猪鲜血清抗体的阳性率也不同。 相似文献
5.
广东省猪细小病毒病血清学调查 总被引:1,自引:0,他引:1
广东省猪细小病毒病血清学调查卢洪芬,任裕其,尹锦霞,梁红梅,姚柏莲(广东省兽医防疫检疫站,广州510230)猪细小病毒(Porcineparvovirus,简称为PPV)是引起猪繁殖障碍的主要病原之一。此病主要引起孕猪流产、产死胎、木乃伊胎、产弱仔和... 相似文献
6.
7.
8.
为了调查猪细小病毒病在武威市凉州区规模化猪场中的流行状况,采用ELISA方法对随机选择的60个规模化养殖场的782份猪血清进行PPV抗体检测.猪细小病毒在非免疫仔猪、母猪、公猪群体中抗体阳性率依次为37.7%、47.2%、39.6%;母猪、公猪群体中免疫抗体阳性率分别为89%、92%.本次调查,证实武威市凉州区规模化养殖场猪细小病毒病的流行较为严重,特别是母猪和公猪的带毒较为严重.建议养殖场结合自身实际,加强饲养管理和疫苗免疫,制定合理的净化方案,建立免疫抗体较高的健康免疫猪群,此次调查,为武威市凉州地区猪病综合防治提供了科学依据. 相似文献
9.
为了调查猪细小病毒病在武威市凉州区规模化猪场中的流行状况,采用ELISA方法对随机选择的60个规模化养殖场的782份猪血清进行PPV抗体检测.猪细小病毒在非免疫仔猪、母猪、公猪群体中抗体阳性率依次为37.7%、47.2%、39.6%;母猪、公猪群体中免疫抗体阳性率分别为89%、92%.本次调查,证实武威市凉州区规模化养殖场猪细小病毒病的流行较为严重,特别是母猪和公猪的带毒较为严重.建议养殖场结合自身实际,加强饲养管理和疫苗免疫,制定合理的净化方案,建立免疫抗体较高的健康免疫猪群,此次调查,为武威市凉州地区猪病综合防治提供了科学依据. 相似文献
10.
11.
12.
13.
猪伪狂犬病与细小病毒病混合感染的诊治报告 总被引:1,自引:0,他引:1
本文报告了一起猪伪狂犬病和细小病毒病混合感染的诊治病例。该场出现母猪产死胎、木乃伊胎、流产、死产和初生仔猪发病死亡现象,用疫苗预防和中西药结合治疗等综合防治措施取得了较好的疗效。 相似文献
14.
Of 13 gilts 7 were vaccinated twice at an interval of 3 weeks with an inactivated vaccine against porcine parvovirus (PPV) infection, while the 6 nonvaccinated gilts served as controls. Starting after the 1st vaccination the gilts were bred and, after about 40 days of gestation, challenged intravenously with virulent PPV. The vaccinated gilts produced an antibody respons after the 1st and 2nd vaccination compatible with a primary and a secondary immune response, respectively. The nonvaccinated gilts remained low-titered or PPV antibody negative until after challenge. The gilts were killed after about 90 days of gestation, and their litters were examined. All of 53 fetuses from the vaccinated gilts were alive, and infection with PPV could not be demonstrated. Conversely, 50 of 65 fetuses from the non-vaccinated gilts were infected with PPV, and 43 were dead.In a field study comprising 2 herds, PPV seronegative or lowtitered gilts were vaccinated before mating. There were no obvious signs of reproductive disorders in the 2 herds during the vaccination trials, and the reproductive performance of vaccinated gilts did not differ significantly from that of non-vaccinated gilts. 相似文献
15.
猪细小病毒PCR检测方法的建立与应用 总被引:21,自引:0,他引:21
根据已报道的猪细小病毒基因组序列,设计并合成了1对寡核苷酸引物,通过对影响PCR扩增因素的筛选,成功地从猪细小病毒感染的组织和细胞中扩增出445bp片段,回收该片段用EcoR I酶切得到了预期的结果,证实了该扩增片段的特异性。敏感性试验表明,该方法可以检测出10^-4个TCID50的病毒含量。利用该方法对临床上24份流产病科的检测,查出阳性16份,而同时利用HA检测阳性只有10份。这些结果说明本试验建立的PCR诊断方法灵敏度高、特异性强。 相似文献
16.
During a 20 months period in 1978 and 1979 aborted, macerated and mummified fetuses as well as stillborn piglets from herds with reproductive failure were examined for evidence of infection with porcine parvovirus (PPV). A total of 602 cases were examined and evidence of infection with PPV was found in 269 (45 %). In 52 % of these antibody to PPV was found. Infective PPV as well as antibody to PPV were found in 41 %, whereas infective PPV alone was found in 7 %. When abortions were excluded from the results a high prevalence of infection with PPV (73–90 %) was found among fetuses of all sizes with the exception of fetuses dead late in gestation or at term. 相似文献
17.
18.
本试验从福建省某猪场疑似猪细小病毒病死胎的淋巴结、肝脏中分离到1 株病毒。病料接种PK-15细胞36 h后出现了圆缩、集聚、脱落等细胞病变,猪细小病毒阳性血清能特异性地中和该分离病毒。根据已发表的细小病毒(PPV) VP2基因的序列设计并合成了一对引物,采用PCR方法可扩增531 bp DNA片段。测序结果表明,分离株VP2基因与NCBI公布的NADL-2株的同源性高达99.2%,证实分离的病毒株为猪细小病毒。为进一步开展该病毒致病机理、流行病学、诊断研究与疫苗免疫等奠定了基础。 相似文献
19.
猪细小病毒结构蛋白VP2及其疫苗的研究进展 总被引:1,自引:0,他引:1
猪细小病毒(porcine parvovirus,PPV)是引起母猪繁殖障碍性疾病的主要病原之一,该病毒在世界范围内广泛存在并呈地方性流行, 给生猪的繁殖、发展带来了巨大的经济损失,故防制猪细小病毒病非常重要。PPV VP2蛋白是病毒粒子的主要衣壳蛋白,在体外能自我装配成病毒样颗粒,并能刺激机体产生抗PPV中和抗体,且可作为抗原转运载体,所以研究VP2对PPV新型疫苗研制至关重要。文章综述了猪细小病毒结构蛋白VP2及其疫苗的研究进展。 相似文献