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1.
鸡传染性法氏囊病间接ELISA诊断试剂盒的研制及初步应用   总被引:3,自引:0,他引:3  
采用vero细胞增殖的IBDV抗原建立了间接ELISA,用于定量检测IBDV抗体。对该方法进行了标准化研究,确立了该方法的最佳工作条件。在此基础上研制了相应的诊断试剂盒,并对盒内各组分的性状、保存、质量控制以及诊断试剂盒的特异性、敏感性、可重复性、符合率、与国外同类产品的比较、保存期等进行了全面、详细的研究。结果表明,研制的试剂盒在-20℃保存至6个月时各项性能都很好。该试剂盒与进口试刺盒对同样血清样品检测,符合率为86.7%。间接ELISA试剂盒与琼扩试验的符合率为92,5%。该试刺盒可对大量血清样品进行检测,操作简单方便、结果特异性强、敏感性高、快速,更适合于大型鸡场IBD免疫抗体水平的监测及现地疫病诊断等需要。  相似文献   

2.
禽流感病毒夹心ELISA诊断试剂盒的研制及应用   总被引:7,自引:2,他引:5  
将成熟的禽流感病毒(AIV)夹心ELISA快速检测方法组装成诊断试剂盒。试剂盒由1~11号试剂、一块酶标板和一份说明书组成。对试剂盒内各组份进行了特异性、敏感性、重复性及保存期的测定。结果表明.在-10℃下能保存6个月.而且特异性强、敏感性高、重复性好,操作简单.方便.能快速、准确地检测出样品中是否带有AIV抗原。先后制备了8个批次的诊断试剂盒.于湖北、安徽及河南等地的养禽场、兽医站、农科院、农业院校等化验室应用.取得了良好的效果。  相似文献   

3.
鸡新城疫酶联免疫诊断试剂盒的研制   总被引:1,自引:0,他引:1  
将ELISA检测鸡新城疫病毒特异性IgM抗体的方法试剂盒化,确定其外包装材料、规格、盒内组成,并对酶标板的包被、质量控制、保存期,酶标抗鸡IgM(μ链)单克隆抗体的冻干、保存,组盒后的ELISA诊断试剂盒的特异性、敏感性、符合率、可重复性、保存期等作了详细的研究。先后制备试剂盒18个批次,用于全国9个省的29个大型鸡场或兽医诊断站,检测血样3628份,其中阳性2959份。  相似文献   

4.
猪繁殖与呼吸综合征血清抗体监测方法的比较   总被引:6,自引:3,他引:3  
应用国产乳胶凝集 (LAT)诊断试剂盒和进口酶联免疫吸附 (ELISA)诊断试剂盒 ,分别检测猪血清中繁殖与呼吸综合征 (PRRS)抗体 ,比较 2种血清学诊断方法的准确性、敏感性和重复性。结果表明 ,国产乳胶凝集 (LAT)诊断试剂盒不论是在特异性、敏感性上 ,还是在同一批次或不同批次试剂的重复性上 ,都要远远低于进口试剂盒 ,两者之间的符合率仅为 76 %。因此 ,应加大对国内外诊断试剂的监控  相似文献   

5.
为评价国产狂犬病病毒ELISA抗体检测试剂盒的性能,选择4种国产品牌ELISA抗体检测试剂盒,分别检测463份已用荧光抗体病毒中和试验(FAVN)测知狂犬病病毒抗体效价的犬血清,用Kappa检验和配对卡方检验评价ELISA试剂盒与FAVN检测结果的一致性和差异性,计算ELISA试剂盒的诊断敏感性、诊断特异性、符合率和重复性等,并比较4种试剂盒的使用范围、样品稀释倍数等参数。结果显示:经Kappa检验,4种试剂盒与FAVN一致性均为弱;经配对卡方检验,A、B试剂盒与FAVN检测结果的差异不显著(P> 0.05),而C、D试剂盒差异显著(P <0.05)。诊断敏感性,D试剂盒最高,B试剂盒最低;4种试剂盒诊断特异性均较低,为29.5%~57.7%;各试剂盒符合率相当,为71.3%~72.8%。综合敏感性、特异性、重复性等考量因素,得出C试剂盒更能满足免疫后抗体检测需求,A试剂盒也较好,两者可作为候选试剂盒。结果表明,4种国产狂犬病病毒ELISA试剂盒的诊断敏感性、诊断特异性、批间稳定性等性能需进一步提高,以满足基层免疫抗体监测需求。  相似文献   

6.
为了解不同猪口蹄疫O 型抗体检测试纸条的性能,通过检测已知相关及非相关阳性血清样品、阴性血清样品和免疫 猪血清样品,对4种猪口蹄疫O型抗体检测试纸条的敏感性、特异性进行研究评估,并对比猪口蹄疫O型VP1结构蛋白抗体ELISA诊断试剂盒的检测结果。结果表明,仅有A试纸条的敏感性和特异性较好,且与试剂盒抗体检测结果的符合率较高(90%);而其他试纸条的敏感性和特异性较差,与试剂盒抗体检测结果的符合率较低(40%~65%)。通过对比检测,仅有A试纸条可用于大量临床样品的快速检测和现场检测,更适合基层兽医和养殖户使用,而其他试纸条的检测性能还有待进一步优化提升。  相似文献   

7.
祖立闯  沈志强 《养猪》2011,(5):98-102
为研制一种快速猪乙型脑炎病毒抗体检测试剂盒,本研究参照已发表的JEV(乙型脑炎病毒)基因组序列,RT—PCR扩增了长约1000bp的E基因片段,连接pET30a表达载体后获得了以包涵体形式表达的重组E蛋白,以该蛋白作为诊断抗原,研制了检测乙型脑炎病毒抗体的间接ELISA(酶联免疫吸附试验)诊断试剂盒。该试剂盒与其它7种常见猪病病毒(圆环病毒2型、伪狂犬病病毒、蓝耳病病毒、细小病毒、流行性腹泻病毒、传染性胃肠炎病毒、猪瘟病毒)的阳性血清不发生交叉反应;批内重复性试验的变异系数小于5%,批间重复性试验的变异系数小于10%;与HI(血凝抑制试验)相比,符合率、敏感性和特异性分别为83.1%、84.3%和80.0%。本研究制备的重组蛋白具有良好的反应活性,以其作为包被抗原研制的JEVE—ELISA诊断试剂盒具有良好的重复性、敏感性和特异性,为JEV的快速诊断、免疫猪群抗体监测和JEV流行病学调查提供了一种快速、简便的血清学诊断试剂盒。  相似文献   

8.
为了开发鸭坦布苏病毒间接ELISA抗体检测试剂盒,研究利用灭活纯化的鸭坦布苏病毒(DTMUV)FX2010株作为包被抗原,由瑞普(保定)生物药业有限公司连续制备了5批次鸭坦布苏病毒间接ELISA抗体检测试剂盒中试产品。该试剂盒对禽流感病毒、鸭瘟病毒、鸭细小病毒、Ⅰ型鸭肝炎病毒、鸭呼肠孤病毒阳性血清和5份SPF阴性质控血清进行的检测均无交叉反应,表明具有较好的特异性。批内和批间重复性试验的变异系数为1.5%~4.2%和2.2%~5.3%,表明产品具有很好的稳定性。应用该试剂盒及中和试验对300份疑似DTMUV阳性血清样品进行检测,结果显示:二者阳性样品符合率为90.12%,阴性样品符合率为93.6%,总符合率为92.7%。研究结果表明,该试剂盒具有操作简便、敏感性高和特异性强的特点,可以为鸭坦布苏病毒病的快速诊断及其流行病学调查提供有力的工具。  相似文献   

9.
本研究通过采用猪圆环病毒2-dCap-ELISA抗体检测试剂盒,对河北、山西两地共441份猪血清样品进行检测发现:河北保定地区349份血清样品中阳性样品为306份,感染率为87.68%;山西地区92份血清样品中阳性样品为77份,感染率为83.7%。与标准的间接免疫荧光检测法进行比较,发现相对于标准IFA,该ELISA检测试剂盒的诊断敏感性为95.48%(383/398),诊断特异性为93.02%(40/43),总符合率为95.24%。由此表明该试剂盒是一种简便、快速、灵敏、适于大规模临床应用的猪圆环病毒2型抗体检测试剂盒。  相似文献   

10.
采用猪圆环病毒2-dCap-ELISA抗体检测试剂盒,对河北、山西两地共441份猪血清样品进行检测。结果显示,河北保定地区349份血清样品中阳性样品为306份,感染率为87.68%;山西地区92份血清样品中阳性样品为77份,感染率为83.7%。与标准的间接免疫荧光检测法进行比较,该ELISA检测试剂盒的诊断敏感性为95.48%(380/398),诊断特异性为93.02%(40/43),总符合率为95.24%。由此表明该试剂盒是一种简便、快速、灵敏、适合于大规模临床应用的猪圆环病毒2型抗体检测试剂盒。  相似文献   

11.
Human and equine athletes are reported to have a high prevalence of gastric disease, and anecdotal evidence suggests a similar phenomenon applies to racing sled dogs. To investigate the prevalence of gastric disease in racing sled dogs, we conducted 2 gastroscopy studies on dogs competing in the annual Iditarod Sled Dog Race. A pilot study of dogs that were either dropped from the 2000 Iditarod Sled Dog Race because of illness or that finished the race indicated that, approximately 5 days after competing, 10 of 28 dogs (35%) had endoscopic evidence of gastric ulceration, erosion, or hemorrhage. The next year, an endoscopic study of 73 dogs participating in the 2001 Iditarod race was performed in order to evaluate a larger population of dogs. Data from 70 of these dogs could be used; 34 (48.5%) had ulceration, erosion, gastric hemorrhage, or some combination of these findings. When this group of 70 dogs was compared retrospectively to a control group of 87 dogs presented to the Texas A&M University (TAMU) Veterinary Medical Teaching Hospital, the Iditarod sled dogs had a significantly higher prevalence (P = .049) of gastric lesions. These findings suggest that, similar to athletes of other species, elite canine athletes have an increased prevalence of gastric disease compared to the canine population at large.  相似文献   

12.
试验选用96头平均体重14.82 kg左右的杜×长×大断奶仔猪,随机分成4组,每组3栏,每栏8头(公母各半)。对照组饲喂基础日粮,试验1、2、3组分别添加1%80目白术、0.2%白术多糖和1%微米白术。试验期30 d。结果表明:在生长性能方面,与对照组相比,1%微米白术添加组可显著提高日增重(P0.05)、降低饲料增重比和腹泻率,而且效果优于1%80目白术组和0.2%白术多糖组,在肠道形态和肠道微生态区系方面,与对照组相比,日粮添加1%80目白术、0.2%白术多糖、1%微米白术均可不同程度的提高十二指肠和空肠的绒毛高度,加深十二指肠和空肠的隐窝深度,并且增加肠道微生态区系的多样性,其中以1%微米白术添加组的效果最佳。  相似文献   

13.
1-(2-Chloroethyl)3-cyclohexyl-1-nitrosourea (CCNU) is an alkylating agent in the nitrosourea subclass. A prospective evaluation of CCNU was done to determine the maximally tolerated dosage of CCNU in tumor-bearing cats. Response data were obtained when available. Twenty-five cats were treated with CCNU at a dosage of 50-60 mg/m3 body surface area. Complete hematologic data were available for 13 cats. Neutropenia was the acute dose-limiting toxicity. The median neutrophil count at the nadir was 1,000 cells/microL (mean, 2,433 cells/microL; range, 0-9,694 cells/microL). The time of neutrophil nadir was variable, occurring 7-28 days after treatment, and counts sometimes did not return to normal for up to 14 days after the nadir. Based on these findings, a 6-week dosing interval and weekly hematologic monitoring after the 1st treatment with CCNU are recommended. The nadir of the platelet count may occur 14-21 days after treatment. The median platelet count at the nadir was 43,500 cells/microL. No gastrointestinal, renal, or hepatic toxicities were observed after a single CCNU treatment, and additional studies to evaluate the potential for cumulative toxicity should be performed. Five cats with lymphoma and 1 cat with mast cell tumor had measurable responses to CCNU. Phase II studies to evaluate antitumor activity should be completed with a dosing regimen of 50-60 mg/m3 every 6 weeks.  相似文献   

14.
Sissay, M.M., Uggla, A. and Waller, P.J., XXXX. Prevalence and seasonal incidence of nematode parasites and fluke infections of sheep and goats in eastern Ethiopia. Tropical Animal Health and Production, XXXX. A 2-year abattoir survey was carried out to determine the prevalence, abundance and seasonal incidence of gastro-intestinal (GI) nematodes and trematodes (flukes) of sheep and goats in the semi-arid zone of eastern Ethiopia. During May 2003 to April 2005, viscera including liver, lungs and GI tracts were collected from 655 sheep and 632 goats slaughtered at 4 abattoirs located in the towns of Haramaya, Harar, Dire Dawa and Jijiga in eastern Ethiopia. All animals were raised in the farming areas located within the community boundaries for each town. Collected materials were transported within 24 h to the parasitology laboratory of Haramaya University for immediate processing. Thirteen species belonging to 9 genera of GI nematodes (Haemonchus contortus, Trichostrongylus axei, T. colubriformis, T. vitrinus, Nematodirus filicollis, N. spathiger, Oesophagostomum columbianum, O. venulosum, Strongyloides papillosus, Bunostomum trigonocephalum, Trichuris ovis, Cooperia curticei and Chabertia ovina), and 4 species belonging to 3 genera of trematodes (Fasciola hepatica, F. gigantica, Paramphistomum {Calicohoron} microbothrium and Dicrocoelium dendriticum) were recorded in both sheep and goats. All animals in this investigation were infected with multiple species to varying degrees. The mean burdens of adult nematodes were generally moderate in both sheep and goats and showed patterns of seasonal abundance that corresponded with the bi-modal annual rainfall pattern, with highest burdens around the middle of the rainy season. In both sheep and goats there were significant differences in the mean worm burdens and abundance of the different nematode species between the four geographic locations, with worm burdens in the Haramaya and Harar areas greater than those observed in the Dire Dawa and Jijiga locations. Similar seasonal variations were also observed in the prevalence of flukes. But there were no significant differences in the prevalence of each fluke species between the four locations. Overall, the results showed that Haemonchus, Trichostrongylus, Nematodirus, Oesophagostomum, Fasciola and Paramphistomum species were the most abundant helminth parasites of sheep and goats in eastern Ethiopia.  相似文献   

15.
The purpose of this study was to determine the frequency of different tumor types within a large cohort of cats with intracranial neoplasia and to attempt to correlate signalment, tumor size and location, and survival time for each tumor. Medical records of 160 cats with confirmed intracranial neoplasia evaluated between 1985 and 2001 were reviewed. Parameters evaluated included age, sex, breed, FeLV/FIV status, clinical signs, duration of signs, number of tumors, tumor location(s), imaging results, treatment, survival times, and histopathologic diagnosis. Most of the cats were older (11.3 +/- 3.8 years). Primary tumors accounted for 70.6% of cases. Metastasis and direct extension of secondary tumors accounted for only 5.6 and 3.8% of cases, respectively. Twelve cats (7.5%) had 2 or more discrete tumors of the same type, whereas 16 cats (10.0%) had 2 different types of intracranial tumors. The most common tumor types were meningioma (n = 93, 58.1%), lymphoma (n = 23, 14.4%), pituitary tumors (n = 14, 8.8%), and gliomas (n = 12, 7.5%). The most common neurological signs were altered consciousness (n = 42, 26.2%), circling (n = 36, 22.5%), and seizures (n = 36, 22.5%). Cats without specific neurological signs were common (n = 34, 21.2%). The tumor was considered an incidental finding in 30 (18.8%) cats. In addition to expected relationships (eg, meninges and meningioma, pituitary and pituitary tumors), we found that lesion location was predictive of tumor type with diffuse cerebral or brainstem involvement predictive of lymphoma and third ventricle involvement predictive of meningioma.  相似文献   

16.
Continuous rate infusion (CRI) of furosemide in humans is considered superior to intermittent administration (IA). This study examined whether furosemide CRI, compared with IA, would increase diuretic efficacy with decreased fluid and electrolyte fluctuations and activation of the renin-angiotensin-aldosterone system (RAAS) in the horse. Five mares were used in a crossover-design study. During a 24-hour period, each horse received a total of 3 mg/kg furosemide by either CRI (0.12 mg/kg/h preceded by a loading dose of 0.12 mg/kg IV) or IA (1 mg/kg IV q8h). There was not a statistically significant difference in urine volume over 24 hours between methods; however, urine volume was significantly greater after CRI compared with IA during the first 8 hours ([median 25th percentile, 75th percentile]: 9.6 L [8.9, 14.4] for CRI versus 5.9 L [5.3, 6.0] for IA). CRI produced a more uniform urine flow, decreased fluctuations in plasma volume, and suppressed renal concentrating ability throughout the infusion period. Potassium, Ca, and Cl excretion was greater during CRI than IA (1,133 mmol [1.110, 1,229] versus 764 mmol [709, 904], 102.7 mmol [96.0, 117.2] versus 73.3 mmol [65.0, 73.5], and 1,776 mmol [1,657, 2.378] versus 1,596 mmol [1,457, 1,767], respectively). Elimination half-lives of furosemide were 1.35 and 0.47 hours for CRI and IA, respectively. The area under the excretion rate curve was 1,285.7 and 184.2 mL x mg/mL for CRI and IA, respectively. Furosemide CRI (0.12 mg/kg/h) for 8 hours, preceded by a loading dose (0.12 mg/kg), is recommended when profound diuresis is needed acutely in horses.  相似文献   

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正We are pleased to publish the second special issue on avian brood parasitism and to be responsible guest editors for the two special issues of Chinese Birds (Vol. 3, No. 4, 2012 and Vol. 4, No. 1, 2013), entitled "Avian Brood Parasitism - A Growing Research Area in Behavioral Ecology". The first issue was published in December 2012. The goal of the two special issues is to publish accumulated knowledge and some of the recent developments in  相似文献   

20.
The occurrence of ectoparasites in sheep flocks is frequently reported but seldom quantified. Sheep production used to be a predominantly family activity in the state of Sa~o Paulo (Brazil), but it began to become a commercial activity in the past decade. Thus, information about the ectoparasites existing in sheep flocks has become necessary. The present data were obtained by means of questionnaires sent to all sheep breeders belonging to the `Associaça~o Paulista de Criadores de Ovinos' (ASPACO; Sa~o Paulo State Association of Sheep Breeders). Response reliability was tested by means of random visits paid to 10.6% of the respondents. Most of the properties (89.5%) reported the presence of one or more ectoparasites. Screw-worm (Cochliomyia hominivorax) was the most frequent ectoparasite (72.5%), followed by bot fly larvae (Dermatobia hominis, 45.0%), ticks (Amblyomma cajennense) and Boophilus microplus, 31.3%) and finally lice (Damalinia ovis, 13.8%). Combined infestations also occurred, the most common one being screw-worm with bot fly larvae (36.0%) followed by bot fly larvae with ticks (13.9%), screw-worm with ticks (9.3%), bot fly larvae with lice (6.9%), and ticks with lice (5.0%). The most common triple combination was screw-worm, bot fly larvae and ticks (12.8%). Breeds raised for meat or wool were attacked by bot fly larvae and ticks more often than other breeds. Lice were only absent from animals of indigenous breeds. The relationships among these ectoparasites are discussed in terms of sheep breeds, flock size, seasonality and the ectoparasitic combinations on the host.  相似文献   

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