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1.
68只豚鼠随机均分为4组,13组分别免疫蜂胶、铝胶和油佐剂PPV疫苗,第4组为空白对照组,注射等量生理盐水。免疫后不同时间点采集血清分析特异性血凝抑制抗体效价评价蜂胶佐剂对免疫豚鼠体液免疫的影响,测定淋巴细胞增殖、IL-2和IL-4含量评价蜂胶佐剂对免疫豚鼠细胞免疫的影响。结果表明,蜂胶、油佐剂和铝胶3种佐剂均能提高豚鼠对PPV灭活疫苗的免疫应答能力,油佐剂提高血清HI抗体效果较好,其次为蜂胶佐剂,再次为铝胶佐剂。蜂胶佐剂促进T淋巴细胞增殖和提高IL-2、IL-4、IL-6和IFN-γ含量效果优于油佐剂和铝胶佐剂。结论:蜂胶能增强PPV灭活疫苗的免疫效果。  相似文献   

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猪细小病毒氢氧化铝疫苗研究   总被引:3,自引:0,他引:3  
选用从国内浙江省某猪场流产死胎中分离的猪细小病毒强毒(简称浙PV-Z株),通过仔猪肾原代细胞增殖后,经甲醛灭活,再配以20%的氨氧化铝胶佐剂制成猪细小病毒氢氧化铝疫苗。该疫苗免疫性好,免疫程序简单。小剂量肌注豚鼠和猪,均能激起明显的抗体应答反应,疫苗对豚鼠接种2次HI价可达到1:320以上(通常1:640-1:1280)。对成年猪接种疫苗0.2ml,0.5ml,1.0ml免疫2次,或用2.0ml免疫1次,HI价范围在1:20-1:320之间,疫苗对胎儿的保护率可达到98.7%。实验室和田间跟踪试验显示该疫苗具有保存期长、耐热、安全、免疫保护率高等特点。  相似文献   

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猪细小病毒病是由细小病毒科猪细小病毒(Porcine Darvoviurs,PPV)引起的初产母猪以产死胎、畸形胎、木乃伊胎及病弱仔猪,偶有流产,但母猪本身无明显症状。此病流行很广,在欧、美、亚、非及大洋洲很多国家均有报道,我国的各省市相继分离到猪细小病毒,本病对养猪业的危害极大。  相似文献   

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为了研究纯化浓缩的猪细小病毒灭活疫苗的免疫效果,应用微滤/超滤管式陶瓷膜分离系统对猪细小病毒细胞收获液进行纯化浓缩,使浓缩液病毒平均含量由10~(4.7)TCID_(50)/mL提高到10~(6.5)TCID_(50)/mL;将纯化浓缩的病毒液经检验合格后,进行甲醛灭活,与注射用矿物白油佐剂制成油包水灭活疫苗;按照猪细小病毒灭活疫苗的质量标准,对制备的灭活疫苗进行检验与免疫效果试验。结果显示:纯化浓缩的猪细小病毒液杂蛋白去除率平均达到71.6%左右;制备的三组灭活疫苗检验均合格;免疫至63 d时,免疫猪体内抗猪细小病毒抗体(HI)水平分别为:纯化浓缩的灭活疫苗平均高达9.62 log_2稀释倍数,常规疫苗平均为8.78log_2稀释倍数,差异显著(P0.05)。试验表明:疫苗病毒细胞收获液进行膜纯化技术处理后,免疫效果显著优于未经纯化的常规灭活疫苗。  相似文献   

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以血清 1、2、4、5型鸭疫里默氏菌 (Riemerella anatipestifer,RA)制备 4价铝胶佐剂和铝胶复合佐剂 2种灭活苗 ,经过无菌及安全检查合格后 ,对 3日龄樱桃谷鸭颈背部皮下注射 0 .5 m L/只。(1 )免疫后 1 0、1 3、1 6 d对同源 RA的攻击 ,铝胶佐剂苗表现出 5 %~ 2 0 %、75 %~ 90 %、1 0 0 %免疫保护 ,2 3~ 30 d免疫保护力开始下降 ;铝胶复合佐剂苗表现出1 0 %~ 35 %、80 %~ 1 0 0 %、1 0 0 %免疫保护 ,5 1~ 6 5 d免疫保护力开始下降。(2 ) 2种疫苗 1次免疫后 2 3d抗体水平均达高峰 ,至 93日龄时仍能检出抗体的存在 ,1 0日龄进行第 2次免疫后可产生更高的抗体水平 ,到 6 5 d时仍能保持较高抗体水平 ;其中 1 6~ 6 5 d进行 2次免疫的铝胶复合佐剂苗产生的抗体水平显著 (P<0 .0 5 )或极显著 (P<0 .0 1 )地高于铝胶佐剂苗。 (3) 2种疫苗免疫雏鸭后能够显著 (P<0 .0 5 )或极显著 (P<0 .0 1 )地增强 T细胞的免疫力 ,时间达 2周。对攻毒保护试验、抗体消长规律和细胞免疫测定结果综合分析表明 ,RA4价铝胶佐剂和铝胶复合佐剂 2种灭活苗免疫雏鸭后 ,免疫保护的形成是体液免疫与细胞免疫协同作用的结果。经实验室攻毒保护试验、EL ISA抗体消长规律测定、T细胞免疫水平测定和田间试验表明 ,研制的 2种疫苗均具有  相似文献   

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用水包油佐剂Merckinade SDA 25、HS1010和双向佐剂Montanide ISA 206三种不同佐剂分别制成猪圆环病毒2型灭活疫苗,对三种疫苗的稳定性、黏度、免疫仔猪后的安全性及效力进行了比较。试验结果表明,以3 000 r/min离心15 min,三种疫苗均无水析出;三种疫苗的黏度均低于200 cP;三种疫苗按2.0 mL/头的剂量接种21日龄健康易感猪,试验猪体温、采食、饮水、精神状况均正常,均无不良临床反应,剖检后各脏器均无病理变化;加强免疫后21d,各组试验猪采血,检测猪圆环病毒2型抗体效价,结果表明,佐剂MontanideISA206相较MerckinadeSDA25可诱导更高水平抗体效价。攻毒试验结果表明免疫组可以得到100%的保护。根据以上试验结果,确定猪圆环病毒2型灭活疫苗使用Montanide ISA 206。  相似文献   

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猪细小病毒(PPV)是引起母猪繁殖障碍的重要病因之一,可引起母猪特别是初产母猪的流产、死胎和/或木乃伊胎等,对养猪业造成严重经济损失。为了预防此病,上海市农科院畜牧兽医研究所于1987年在国内最早研究成功猪细小病毒病灭活疫苗。以后经过不断的改进和优化后,猪细小  相似文献   

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A study was conducted to determine whether low hemagglutination inhibiting (HI) titers (1:5) for porcine parvovirus (PPV) block the development of immune response to a PPV vaccine. Pigs with low (1:5), medium (1:10 or 1:20), or high (1:40 or 1:80) titers were obtained by IV injections with various amounts of PPV immune serum. Pigs were inoculated with 1 or 2 doses of vaccine and were monitored for serum HI antibodies to PPV. Pigs with low titers responded to vaccine just as well as did the seronegative pigs. The HI titers of pigs with medium titers did not increase after first vaccination. After the second vaccination, however, their titers increased and were similar to those of pigs with low titers. High titers blocked the response to vaccination. The pigs that received 2 doses of vaccine had higher titers than did those of pigs that received 1 dose of vaccine. The results indicated that low titers, which would be expected in gilts at the time of vaccination, do not interfere with immunization by the inactivated PPV vaccine, and that 2 doses of vaccine may provide better and longer lasting immune response to inactivated PPV vaccine and probably longer lasting immunity against PPV-induced reproductive failure.  相似文献   

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猪细小病毒灭活疫苗安全性试验及佐剂的筛选   总被引:2,自引:1,他引:2  
本研究以猪细小病毒(PPV)现地分离株(BQ)第30代细胞培养毒株作为灭活疫苗研究用种毒,通过优化病毒增殖条件和培养方法,获得较高滴度的病毒传代细胞培养物用于PPV灭活疫苗的制备.PPV细胞培养毒株分别用甲醛和β-丙内酯进行灭活,对2种灭活剂灭活的病毒液分别用国产铝胶佐剂、进口矿物质白油佐剂以及法国赛比克公司的MONTANIDETM ISA 206、ISA15AVG、IMS251CVG 3种佐剂制备10种灭活疫苗,然后分别进行10日龄乳鼠、60日龄仔猪、不同妊娠阶段母猪的安全性试验及成年豚鼠的免疫效果对比试验.通过比较不同灭活疫苗的安全性和对成年豚鼠的免疫效果,初步确认甲醛灭活的病毒液与佐剂ISA15AVG的组合为PPV灭活疫苗的最佳灭活剂和佐剂组合.  相似文献   

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《畜牧与兽医》2015,(3):29-33
为了研究ECMS-矿物油混合佐剂对兔支气管败血波氏杆菌灭活疫苗的免疫增强作用,在灭活的波氏杆菌中加入不同的佐剂,制备波氏杆菌灭活苗。试验A:选取个体质量1.0 kg左右的健康1月龄新西兰肉兔60只,随机分为以下五组,其中第1~2组为不同剂量ECMS-油佐剂组,第3组为矿物油佐剂疫苗组,第4组为铝胶疫苗组,第5组为无佐剂对照组。各组分别于免疫前及免疫后不同时间进行耳静脉采血,分离血清,用间接ELISA法以及微量凝集法(MAT)检测各组兔血清抗体水平,并对试验兔进行攻毒感染,检测疫苗保护率。试验B:选取个体质量1.0 kg左右的健康1月龄新西兰肉兔32只,平均分为以下四组,分别为ECMS800 g-油佐剂组、矿物油佐剂疫苗组、铝胶疫苗组、无佐剂对照组。于免疫后37 d,无菌心脏采集抗凝血进行淋巴细胞转化试验(MTT),检测各组淋巴细胞增殖情况。结果显示,免疫后13 d开始产生抗体,ECMS-油组和油佐剂组抗体水平均在41 d达到最高,并持续到184 d,三组间差异不显著(P0.05),但与铝胶和无佐剂组差异显著(P0.05),且ECMS800 g-油组均略高于其他两组;MTT结果表明Con A和LPS刺激下,ECMS800 g-油佐剂组的刺激指数显著(P0.05)高于其它各组;ECMS800 g-油佐剂组的攻毒保护率高达100%。结果表明,ECMS和油佐剂两者混合使用可能存在协同作用,可有效提高兔支气管败血波氏杆菌灭活疫苗的免疫效果。  相似文献   

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为防控猪流行性腹泻,筛选可靠的免疫方式,研究采用与猪流行性腹泻病毒毒株序列同源性最高的猪流行性腹泻灭活疫苗进行紧急免疫,于产前30、15 d分别免疫妊娠母猪,并检测免疫前后母猪的血清和初乳中猪流行性腹泻病毒中和抗体及免疫球蛋白G(IgG)、免疫球蛋白A(IgA)特异性抗体.结果表明,免疫后母猪的血清和初乳均产生高水平且...  相似文献   

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Serological response and reproductive performance were estimated in field trials of an inactivated virus vaccine against porcine parvovirus. Experiments were carried out in 10 selected pig breeding herds. A total of 277 seronegative gilts were used. Two hundred and twenty animals were vaccinated twice before mating, fourteen days apart and revaccinated after farrowing. Blood samples were obtained from both vaccinated and non-vaccinated (57 animal) control gilts, one week after the 2nd dose of vaccination, at farrowing time and one week after revaccination. Although there were considerable variations among the herds, the number of returns to oestrus in all herds was higher in vaccinated gilts (11.81%) than in the controls (10.52%). This difference, however, was not statistically significant. The reproductive performance results revealed the absence of an increase in the total born, as pooled values, in vaccinated gilts compared to controls. However, when these results are interpreted in relation to serological data, many control gilts were already seropositive before mating, or remained seronegative at farrowing. According to our results, the duration of immunity with this vaccine is apparently short, as there is a clear decrease in the titres between the 1st and the 2nd sampling times (2.35 +/- 0.14 and 1.97 +/- 0.08, respectively).  相似文献   

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用新城疫 (ND)油佐剂灭活疫苗以 1mL/只注射鸽子 ,试验鸽无不良反应 ;以 0 1mL/只免疫鸽子后 ,试验鸽在 2 4天时HI水平从免疫前的 0上升到 2 7 3 ,经ND标准强毒攻击 ,免疫鸽获 6 /6的全保护  相似文献   

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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引起的一种传染性疾病。母猪表现为流产、早产、死产、木乃伊胎及弱仔等,仔猪和育肥猪则表现为呼吸困难。仔猪发病率和死亡率极高,对养猪业构成了重大危害。特别是近一年来高致病性蓝耳病的暴发,给我国养猪业带来了前所未有的惨重损失。然而药物治疗该病几乎无效,疫苗免疫接种是目前防治该病的主要手段,  相似文献   

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Inactivated porcine parvovirus vaccines have been available commercially in Britain since 1984 and are now widely used in breeding herds. To investigate their value in cost benefit terms an oil-emulsion vaccine developed at Weybridge was used in trials on 1243 gilts in 12 herds during the period 1984 to 1986. In each herd approximately half the gilts were given the vaccine before breeding and the remainder were left unvaccinated. Blood samples were taken at vaccination and two to four weeks later to measure the serological responses, and the reproductive performances of the two groups were compared. When the data from all the gilts in the 12 herds were combined and analysed together there was surprisingly little difference between the reproductive performance of the vaccinated and unvaccinated groups. Only when the results from individual herds were analysed and interpreted against a background knowledge of wild parvovirus activity (as derived from a study of the serological results) did an understanding and evaluation of the benefits of vaccination become possible. As herds vary with respect to the absence or presence of porcine parvovirus and the epidemiology of the infection it is recommended that vaccination be used with discrimination; it should then prove highly cost effective.  相似文献   

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本研究旨在探讨黄芪多糖对猪瘟疫苗免疫的影响.把21日龄断奶仔猪分成4组,在2~4组仔猪基础日粮中分别添加浓度为2×10-4、3×10-4、4×10-4的黄芪多糖,连续饲喂7d;第1组日粮中不添加任何药物,作为空白对照组.用药结束后用猪瘟弱毒疫苗免疫,并于免疫后第1、3、5周分别用正向间接血凝抑制试验和流式细胞术检测外周血猪瘟抗体效价及淋巴细胞亚群动态.结果显示:与对照组相比,黄芪多糖能提高仔猪外周血猪瘟抗体水平1个滴度以上,具有提高CD3+、CD4+T淋巴细胞百分数的趋势.说明黄芪多糖能提高仔猪特异性免疫力,是良好的免疫增强荆.  相似文献   

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