楚雄州猪繁殖与呼吸综合征的血清学检测报告

采用 ELISA 实验法对来自云南省楚雄州10个县(市)22个规模养猪场的603份种猪、107户农户的200份散养商品猪共803份血清,进行了猪繁殖与呼吸综合征感染的血清学检测,结果检出阳性25份,总阳性率为3.11%,其中,规模场种猪阳性率为4.15%,农户散养商品猪未检出阳性。     

猪繁殖与呼吸综合征检测技术研究进展

近年来猪繁殖与呼吸综合征对养猪业造成了巨大的损失,其致病机制和自身复制规律至今尚不完全明确,这就使得对该病的检测显得尤为重要.伴随着对PRRSV基因组分子生物学的深入研究,新的更简洁高效的诊断技术不断出现,对快速准确诊断PRRS提供了有力支持.论文对PRRS实验室诊断技术做一综述,重点比较各类方法的优缺点,以供参考.     

吉林地区规模化猪场猪繁殖与呼吸综合征的血清学检测

本试验应用ELISA法对吉林地区8个猪繁殖与呼吸综合征(PRRS)未免疫猪场和9个PRRS免疫猪场的后备母猪、生产母猪和5~10周龄的断奶仔猪3个猪群进行了猪繁殖与呼吸综合征病毒(PRRSV)抗体检测,结果表明:吉林地区8个PRRS未免疫猪场均受有PRRSV感染,猪场抗体阳性率为100%,猪群抗体阳性率在50%~75%之间,平均阳性率为62.26%;吉林地区9个PRRS免疫猪场猪群PRRSV抗体阳性率在70%~100.00%之间,平均阳性率为87.78%。PRRS未免疫猪场与PRRS免疫猪场猪群抗体平均阳性率相比,差异极显著(P<0.01)。     

猪繁殖与呼吸综合征病毒检测技术研究进展

猪繁殖与呼吸综合征是一种能引起母猪繁殖障碍、新生仔猪呼吸道症状及高病死率的传染病.文章就其检测技术,如病毒分离,抗原检测,血清抗体检测,免疫胶体金技术的研究进展做一综述.     

猪繁殖与呼吸综合征病毒实验室检测技术研究进展

猪繁殖与呼吸综合征(PRRS)的临床症状表现为母猪繁殖性能下降、不孕、流产等。感染猪繁殖与呼吸综合征病毒(PRRSV)后病理及组织学变化往往不太典型,而且易与其它病原感染所引起的病理变化相混淆,给该病的诊断带来一定困难,因此,对于PRRSV的确诊有赖于实验室诊断,不同的诊断方法敏感性、特异性及成本方面存在差异,而现有的血清学方法无法区分疫苗抗体和野毒抗体。作者就PRRSV抗原或抗体的检测技术（如病毒分离、RT-PCR、免疫过氧化物酶技术、酶联免疫吸附试验等）的研究现状作一简单的概述。     

猪繁殖与呼吸综合征化学发光检测技术研究

根据双抗原夹心ELISA检测方法,结合化学发光检测体系建立了检测血清中PRRSV抗体的化学发光免疫分析方法,确定了检测体系中所用各组成部分的浓度,并组装为试剂盒,同时对试剂盒的灵敏度、特异性、精密度、准确性、稳定性等技术参数与酶联免疫分析进行了对比,结果表明,二者的检测值显著相关,相关系数为0.9486.该试剂盒在2～8℃下可保存1年,并且灵敏度高、特异性强、精密度好,操作简便、耗时短,能准确检测出血清中抗体的浓度.     

贵阳市规模化猪场猪繁殖与呼吸综合征血清学调查研究

试验应用ELISA检测方法对贵阳市3个未免疫猪繁殖与呼吸综合征（PRRS）猪场和9个免疫猪场的后备母猪、生产母猪和5～10周龄断奶仔猪3个猪群进行猪繁殖与呼吸综合征病毒（PRRSV）抗体检测。结果表明：贵阳市3个未免疫猪场中2个有PRRSV感染,猪群抗体阳性率在0％-10％之间,平均阳性率为5％;9个免疫猪场猪群PRRSV抗体阳性率在65％～90％之间,平均阳性率为82．80％,未免疫猪场与免疫猪场猪群抗体平均阳性率相比,差异极显著（P〈0．01）。     

广西猪繁殖与呼吸综合征血清学调查

猪繁殖与呼吸综合征(PRRS)俗称蓝耳病,是80年代末期发现的以妊娠母猪流产、早产、死胎、木乃伊胎和弱仔及仔猪呼吸道症状高死亡率为主要特征的一种新的病毒性传染病.1987年首先在美国发现本病,而后世界各地陆续有报道本病的流行暴发.我国大陆在1996年初首次报道首例PRRS.目前,PRRS已在我国某些地区流行,并已造成严重的经济损失.为摸清PRRS在我区的感染情况,1999-2000年两年间我们应用ELISA方法对来自全区各地的猪血清进行PRRS监测.现将结果报道如下:     

湖北某地区猪繁殖与呼吸综合征血清学调查

为了解湖北某地区猪场内猪繁殖与呼吸综合征的血清抗体状况,应用ELISA试剂盒对2014年3月至2014年9月来自10个规模场、2个屠宰场、24个散户的猪血清样品进行了检测。共检测血清732份,检出阳性血清501份,合格率68.44%。数据显示规模场的猪繁殖与呼吸综合征抗体合格率明显高于散养户,应采取多种措施以提高散养户的抗体合格率。     

规模猪场猪繁殖与呼吸综合征的血清学调查

猪繁殖与呼吸综合征是养猪场多发病,造成很大的经济损失。为了摸清遂平县规模猪场该病流行情况,本调查选择48家猪场,采集1155份血清,ELISA抗体检测。结果表明,无论免疫或者未免疫猪场都感染了PRRS,阳性率分别为87.5%和90.8%。应引起高度重视,加强防控。     

猪繁殖与呼吸综合症的研究概况

猪繁殖与呼吸综合症(PRRS)是猪的一种新病毒性疾病,又称"猪蓝耳病"、"猪神秘病"、"猪繁殖呼吸综合症"等.1987年首先报道于美国,以后在德国、荷兰、加拿大、比利时、丹麦、英国、法国、马耳他、朝鲜、菲律宾、希腊、俄罗斯、日本等20多个国家均有本病的发生,我国的台湾省也有疫情报道.     

猪繁殖与呼吸综合征弱毒疫苗研究进展

<正>经典的猪繁殖与呼吸综合征(PRRS)是一种主要表现为母猪繁殖障碍与新生仔猪呼吸道症状的传染病。近年来,国内新暴发和流行的高致病性PRRS,则以高热、高     

A national serological survey to verify Australia's freedom from porcine reproductive and respiratory syndrome

Objective To provide serological data to support Australia's claim of freedom from porcine reproductive and respiratory syndrome.
Design A national serological survey was designed to provide 99% confidence of detecting at least one infected pig herd in Australia, assuming that at least 5% of herds would have been exposed to porcine reproductive and respiratory syndrome virus and that at least 25% of the 'finisher' pigs in these herds would have antibodies to the virus.
Procedure A two-stage testing regime was used. All samples were tested with a commercially available enzyme-linked immunosorbent assay. If assay reactions were found, all samples from the herd were to be tested using the indirect immunofluorescence antibody assay.
Results Of the 875 samples from 163 herds from all States in Australia, there was some evidence of reactivity in only four samples from four herds on the enzyme-linked immunosorbent assay. Further testing using the indirect immunofluorescence antibody assay according to the study protocol demonstrated that the reactions were not due to the presence of specific porcine reproductive and respiratory syndrome virus antibodies in the sera.
Conclusion The results of this study support the view that Australian pigs are free of porcine reproductive and respiratory syndrome virus.     

猪繁殖与呼吸综合征灭活疫苗研究进展

<正>猪繁殖与呼吸综合征(Porcine reproductive and respiratory syndrome,PRRS)又称"猪蓝耳病",是由猪繁殖与呼吸综合征病毒(PRRSV)引起的猪的     

Update on porcine reproductive and respiratory syndrome

The Exotic Animal Disease Bulletin is produced by Agriculture, Fisheries and Forestry-Australia (AFFA). For further information, contact the Animal Health Science and Emergency Management Branch, National Office of Animal and Plant Health, AFFA, GPO Box 858, Canberra ACT 2601. [Phone: (02) 6272 4509; fax: (02) 6272 3372; e-mail: neil.tweddle@affa.gov.au ]     

猪繁殖与呼吸综合征的诊断

20 0 2年 10月胶东某规模化猪场发生以妊娠母猪流产、产死胎 ,仔猪出现以呼吸道症状为主的疾病 ,经流行病学分析、症状观察、病理剖检、病毒分离及ELISA、 PCR检测确诊为猪繁殖与呼吸综合征(porcine reproductive and respiratory syndrome,PRRS)。现将该场 PRRS的诊治情况报告如下。1　发病情况及临床症状该场为自繁自养猪场 ,来诊时共存栏大小猪 90 0余头。母猪 12 4头 ,处于妊娠期的有 5 2头 ,其中初产母猪 15头。中大肉猪 4 0 0多头。据畜主介绍 ,该场2 0 0 2年 9月初即有 6头母猪分别于预产期前 3～ 7天左右开始流产 ,在这之前 …     

Analysis of national serological surveys for the documentation of freedom from porcine reproductive and respiratory syndrome in Switzerland

Results of national serological surveys for porcine reproductive and respiratory syndrome (PRRS) conducted in Switzerland in 2001 and 2004 were analyzed. In 2001, 41,124 breeding sows from 2,540 herds out of 6,406 were sampled, and in 2004, 7,498 animals were sampled from 1,074 herds out of 5,320. All serum samples were tested for PRRS using an ELISA developed at the Institute of Virology and Immunoprophylaxis (IVI), Switzerland with a sensitivity (Se) and specificity (Sp) of 94 and 97%, respectively. Positive samples were re-tested with a commercial ELISA (IDEXX) with Se of 100% and Sp of 99%. Samples positive in the second test were confirmed with the fluorescent antibody test (FAT). A stochastic model using data from the main survey conducted in 2001 was done to verify whether the sampling scheme used could detect at least one infected herd with 99% confidence level if the herd designed prevalence was at 0.1 or 0.2%. Additionally, a Bayesian approach was conducted to calculate the post-survey probability of freedom from PRRS using data from the 2001 and 2004 surveys. A Monte Carlo simulation with 5000 iteration was run for each model. Eleven samples in 2001 and six in 2004, all from different farms, could not be conclusively confirmed as negative by the FAT. All other samples were negative. Truly infected animals and herds were not predicted by a stochastic model at the 99% confidence level and 0.1% herd prevalence using data from the 2001 survey. However, it was demonstrated that the prior probability of freedom from PRRS increased from 89.3 to 99.2% after the 2001 survey. Upon completion of the 2004 survey, the probability of freedom from PRRS reached a value of 99.7%. Based on our results, we could conclude that the pig industry in Switzerland is free of PRRS virus with this level of confidence. Restricted import activities over the last decades are a possible explanation for the continuing absence of PRRS-infection in the Swiss swine population. Import requirements defined by the pig industry minimize the risk of introduction of PRRS-infected animals in the future.     

Comparative study of serological methods for the detection of antibodies to porcine reproductive and respiratory syndrome virus.

A comparison was made of serological diagnostic methods used for the detection of antibodies against porcine reproductive and respiratory syndrome (PRRS) virus. In the "phase I" PRRS test panel comparison, a panel of sera collected from 135 pigs of various ages, from North American herds with and without PRRS histories, were sent to 4 different laboratories and tested by an indirect immunofluorescent assay (IFA), an immunoperoxidase monolayer assay (IPMA) and an indirect enzyme-linked immunosorbent assay (iELISA). In the "phase II" PRRS test panel comparison, a panel of 382 sera collected from pigs of various ages, PRRS histories, and from various locations in North America and France, were divided into 2 panels (A & B) and sent to 3 Canadian laboratories and tested by the IFA and iELISA. In the phase I comparison, agreement between the IFA of laboratory 4 and the iELISA and IPMA of laboratory 3 was excellent (kappa values of 95% and 98%, respectively). This contrasted with the poor agreement between these laboratories and the IFA results of laboratories 1 and 2 in the phase I trial. In the phase II comparison, the results demonstrated good agreement between various tests both within and between laboratories. The overall performance of the iELISA was superior in the combination of sensitivity (96.1%) and specificity (100%) relative to the reference classification of the serum samples and repeatability (kappa value 98%). The iELISA is technically superior to IFA and IPMA, time efficient, cost effective and suitable for testing of a large number of samples over a short period of time. Thus, the iELISA may be a better alternative to IFA or IPMA for routine detection of PRRS viral antibodies in swine sera.     

猪繁殖和呼吸综合征的诊断及防制

对猪繁殖和呼吸综合征的发生与危害及防治进行了全面论述 ,包括发病史、病原学、临床症状、诊断、传播和防治