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本文简述用胶体金免疫层析技术，构建鸡传染性法氏囊病快速诊断试纸。试纸主要由测试端、显色区和手柄端3部分构成，能在很短的时间内完成对鸡传染性法氏囊病的诊断，且无需任何仪器设备，具有简便、快速、敏感、特异的特点。 相似文献
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鸡传染性法氏囊病（IBD）是由鸡传染性法氏囊病病毒（IBDV）引起的一种主要危害雏鸡的免疫抑制性传染病。本病发病率高,发生本病的鸡场,常常出现新城疫、马立克氏病等疫苗接种的免疫失败,这种免疫抑制现象常使发病率和死亡率急剧上升。因此快速准确地检测鸡传染性法氏囊病病毒（IBDV）,对正确诊断、预防鸡传染性法氏囊病,降低养殖户的经济损失十分重要。本文将就鸡传染性法氏囊病病毒常用的检测技术进行分类介绍。 相似文献
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用聚合酶链反应（ＰＣＲ）技术直接检测鸡传染性法氏囊病病毒，可快速、特异及敏感地检出实验毒株和病鸡法氏囊内存在的微量病毒核酸。对病鸡、进口种鸡的实测结果表明，本法对诊断鸡传染性法氏囊病病毒具有重要的实用意义 相似文献
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从法氏囊、肝脏和肾脏三大脏器的病理变化入手,对鸡传染性法氏囊病、鸡新城疫、鸡传染性支气管炎、鸡马立克病、鸡淋巴细胞性白血病、鸡传染性贫血、鸡包涵体肝炎以及鸡真菌毒素中毒症进行鉴别诊断,以期为确诊和有效防控鸡传染性法氏囊病提供参考。 相似文献
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鸡传染性法氏囊病是由传染性法氏囊病病毒所引起的幼鸡的一种急性高度接触性传染病。该病主要侵害雏鸡和幼龄鸡。其主要症状为鸡的法氏囊受到侵害,先肿胀、出血变黄,然后迅速萎缩,骨骼肌出血,肾小管尿酸盐沉积,对鸡的健康造成了严重的威胁。本文为临床一线的养殖人员和兽医提供了解鸡传染性法氏囊病的病原学、流行特征、临床症状、病理变化、诊断方法和防治措施等信息资料,期望为鸡传染性法氏囊病的诊断与防治提供理论参考。 相似文献
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莱克多巴胺胶体金免疫层析法快速检测试纸条的研制 总被引：1，自引：0，他引：1
为研制一种快速、简便的基于胶体金免疫层析法的试纸条,快速检测猪尿中莱克多巴胺（ractopamine,RAC药物残留）,采用柠檬酸钠还原法制备胶体金颗粒,标记莱克多巴胺单克隆抗体并喷于玻璃纤维上制备胶金垫,RAC-BSA偶联抗原和羊抗鼠IgG分别结合于硝酸纤维膜上,依次将样品垫、胶体金垫、硝酸纤维素膜和吸水纸组装并切割成莱克多巴胺胶体金免疫层析快速检测试纸条。试验结果表明该快速检测试纸条的检测限为5 ng/mL,可在8~10 min内完成测试,肉眼即可判断,无需其他检测设备。该试纸条灵敏度、特异性、稳定性和重复性均达到临床使用要求,适用于现场快速检测和筛选工作。 相似文献
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建立了一种快速检测脱氧雪腐镰刀菌烯醇(DON)的免疫胶体金检测方法.利用柠檬酸三钠还原法制备直径40 nm的胶体金溶液,利用胶体金标记抗DON单克隆抗体制备胶体金免疫复合物,将DON-BSA和羊抗鼠IgG分别固定在NC膜的检测线和质控线上,依次将样品垫、胶体金结合垫、NC膜和吸水垫粘贴到PVC膜上,组装成试剂板.该试剂板灵敏度可达到500 μg/kg,15 min内即可完成检测;特异性好,与其他霉菌毒素无交叉反应;稳定性、准确性均较好.该胶体金免疫层析试剂板使用方便、快速,且不需要任何仪器设备辅助,可开发作为一种大批量检测脱氧雪腐镰刀菌烯醇样本的筛选手段. 相似文献
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O Onunkwo J O Okoye 《Revue d'élevage et de médecine vétérinaire des pays tropicaux》1991,44(4):411-414
Infectious bursal disease was reported in a flock of 7-week old vaccinated chickens. Clinical findings and post-mortem changes were classical as well as the microscopic pathology of the bursa. Bursal homogenates from dead birds were positive for IBD virus antigen in agar gel diffusion test (AGDT). Convalescent sera obtained from birds 14 days following the onset of clinical signs were also positive for IBD virus antibody in AGDT. Seven-week old susceptible birds, each infected i/m with 0.1 ml of a bursal preparation from the outbreak, showed clinical signs of IBD on the 3rd day and were all dead by the 6th day. Their bursae were also positive for IBD virus antigen in AGDT. This is the first recorded outbreak of IBD in Southern Nigeria following inoculation with a locally produced vaccine. 相似文献
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为快速检测犬冠状病毒,研究利用胶体金免疫层析技术制备和评价犬冠状病毒抗原检测卡。试验通过将胶体金标记的CCV Ab1和鼠IgG涂布于聚酯纤维膜上作为标记垫,生物素耦联的CCV Ab2处理在样品垫上,链霉亲和素和羊抗鼠IgG包被于NC膜上分别为检测线和质控线,与吸水纸和PVC底板制备犬冠状病毒抗原胶体金检测卡,并对其评价。结果:该检测卡不与其他病毒发生交叉反应,可检测浓度低至2 ng/mL的样本,24月是稳定的。结论:该测试板具有良好的特异性、灵敏度、重复性和稳定性,并且与RT-qPCR的结果较符合。因此,该检测卡能快速、准确地检测犬冠状病毒,为动物临床诊断和治疗提供参考。 相似文献
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Muhammad Wasif Malik Najma Ayub Irfan Zia Qureshi 《Journal of veterinary science (Suw?n-si, Korea)》2006,7(1):43-46
Infectious bursal disease (IBD) is an acute and highly contagious disease of young chickens caused by Birnavirus. Mortality of infected birds can be best prevented if injected with antibodies. The present study was an attempt to raise specific hyper-immune polyclonal antibodies against IBD virus in Pakistan. Commercial layers divided into four groups were injected with IBD vaccine subcutaneously according to four different treatment regimens. Eggs were collected daily and antibodies were purified from yolk with dextran sulphate. Titers of antibodies in serum and yolk were evaluated with enzyme linked immunosorbant assay and agar gel precipitation test. Antibody titers were significantly higher in yolk than serum. Eggs collected at 28 days post-vaccination had maximum antibody titers. Of treatment regimens, T3 was found to be most effective for hyperimmunization. Lyophilized antibodies stored at 4℃ did not lose their activity till the end of experiment. IBD virus infected birds were injected with purified antibodies which induced 92% recovery as compared to control birds. The study implicates that the purified antibodies may be useful as a therapeutic agent to cure IBD infected birds. 相似文献
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E Z Mushi M G Binta R G Chabo R T Ndebele 《The Onderstepoort journal of veterinary research》1999,66(2):135-137
Sera from nine out of 30 (30.0%) apparently healthy unvaccinated indigenous (Tswana) chickens had precipitating antibodies to infectious bursal disease (IBD) virus using the agar gel precipitation test. Similarly, sera from 11 out of 49 (22.4%) chickens of exotic breeds with no history of vaccination against IBD were positive for antibodies against the virus. 相似文献
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为制备外源病毒检验用抗鸡传染性法氏囊病病毒(Infectious Bursal Disease Virus,IBDV)的特异性血清,对300只3~4周龄的SPF鸡进行了基础免疫和加强免疫。最后一次免疫后21d采血并分离血清,血清经混合、分装、冷冻真空干燥后,对其进行了无菌检验、外源病毒检验、剩余水分测定、中和效价测定和特异性检验。结果表明,本研究制备的抗IBDV特异性血清无菌检验、外源病毒检验和剩余水分测定均符合《中华人民共和国兽药典》三部(二〇一〇年版)规定;血清中和效价为1:5747,与IBDV B87株毒种中和指数为104.3,与鸡新城疫病毒La Sota株、鸡传染性支气管炎病毒H120株、鸡传染性支气管炎病毒H52株、鸡传染性喉气管炎病毒、鸡痘病毒、禽呼肠孤病毒S1133株的中和指数均不大于10,通过AGP、ELISA、HI等试验确定血清中不含其他禽源外源病毒抗体。本研究为鸡传染性法氏囊病活疫苗或毒种的外源病毒检验提供了具有良好特异性和高效价的中和用血清。 相似文献