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本研究用鸭坦布苏病毒病灭活苗三次免疫SPF蛋鸡,收取高免鸡蛋,制备成冻干高免卵黄抗体;用鸡胚中和试验和间接ELISA方法进行效价检测。试验结果显示,第3次免疫后2周,卵黄抗体中和效价为1∶103.5,4、5周达到最高值1∶104.5;间接ELISA方法检测冻干前后的抗体效价结果均为阳性;对鸭坦布苏病毒强毒的攻毒保护率达100%,可为鸭坦布苏病毒的防控提供一种有效的冻干高免卵黄抗体制剂。 相似文献
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本文利用鸭病毒性肝炎(DVH)弱毒活疫苗和DVH灭活油乳剂疫苗制备高免卵黄抗体,研究表明,高免卵黄抗体具有治疗鸭病毒性肝炎的临床疗效。在治疗过程中发现,高免卵黄抗体对鸭病毒性肝炎的疗效,主要决定于卵黄抗体当中的中和抗体效价与免疫途径。卵黄抗体当中的中和抗体效价一般都会在28.5之上。研究说明高免卵黄抗体对于雏鸭感染鸭病毒性肝炎病毒的24h以内完成肌肉注射,能够达到的免疫疗效最佳。 相似文献
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鸡抗鸭病毒性肝炎高免卵黄抗体的研制与应用 总被引：4，自引：0，他引：4
用鸭病毒性肝炎Ｉ型鸡胚毒免疫鸡，成功制备出安全，高效的鸡抗鸭病毒性肝炎高免卵黄抗体。经实际应用于预防时，雏鸭的平均成活率为９６．９％；用于发病鸭群治疗时，保护率为９５％。试验表明，应用鸡制备高免卵黄抗体，不仅为鸭病毒性肝炎的研究提供了更为广泛的实验动物，时也为异源性高免卵黄抗体在防治鸭病毒性肝炎的应用上探讨出新的途径。 相似文献
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猪圆环病毒2型高免卵黄抗体的研制与应用 总被引：2，自引：1，他引：1
为制备猪圆环病毒2型(porcine circovirus serotype2,PCV-2)高免卵黄抗体,并对其治疗效果进行研究,通过自制猪圆环病毒2型(PCV-2)灭活苗,免疫SPF产蛋鸡,收集高免蛋,制备PCV-2高免卵黄抗体,对高免卵黄抗体进行无菌检验、活体动物安全性检测,用琼脂扩散方法进行效价检验和人工感染保育猪治疗试验,并将其应用于临床实践,观察其治疗效果。结果抗体效价达到1∶64;人工感染治疗试验治愈率达100%;临床试验治愈率为96%,应用效果良好。 相似文献
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为了获得针对水貂出血性肺炎的特异性疫苗,试验从分离自2012年水貂出血性肺炎病例的24株绿脓杆菌中筛选出血清G型(D4株)与血清C型(C1株)各1株;同时研制血清G型、血清C型及血清G-C型二价灭活疫苗,分别免疫小鼠与水貂,攻病原菌,测定疫苗的保护率、血清抗体消长规律。结果表明:分离株D4与C1在30代内菌体含量稳定,D4株在24代内毒力稳定,C1株在21代内毒力稳定;血清G型与C型单价疫苗都可对50倍LD50本型病原菌产生完全保护,二价灭活疫苗可对50倍LD50血清G型与C型病原菌完全保护。一免后第21天小鼠血清抗体水平达到峰值,抗G型与C型菌中和抗体效价为1∶3 200,1∶6 400,在35 d后抗体水平下降;二免后,水貂55 d内血清中和抗体维持在较高水平。说明D4株与C1株可以作为良好的水貂出血性肺炎疫苗的候选株,制备的二价灭活疫苗能对水貂产生良好保护力,为水貂出血性肺炎防治奠定坚实基础。 相似文献
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选取鸭肝炎病毒(duck hepatitis virus,DHV)分离株BZ-Ⅰ株作为疫苗株制备灭活苗,多次免疫蛋鸡制备卵黄抗体。经鸡胚中和试验法测定卵黄抗体的中和效价为29.6;经动物试验证实卵黄抗体可有效预防和治疗雏鸭对鸭病毒性肝炎(duck viral hepatitis,DVH)强毒的攻击,为雏鸭DVH的防治提供了新的技术手段。 相似文献
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为了有效预防鸭短喙侏儒综合征,采用新型鸭细小病毒毒株（SD03株）制备了一种鸭短喙侏儒综合征精制蛋黄抗体。采用琼脂扩散试验和中和试验进行蛋黄抗体效价的测定,分析蛋黄抗体的消长规律,确定最佳免疫程序、收蛋时间和临床应用效价标准,并对制备的3批供试品进行临床应用效果评价。结果表明：该研究成功制备了一种鸭短喙侏儒综合征精制蛋黄抗体,该抗体琼扩效价和中和效价均在三免15 d达到高峰,分别为1∶64和1∶640,由此确定高免蛋收集时间为三免15 d;基础免疫完成后,最佳加强免疫时间为每隔30 d进行一次加强免疫,可使抗体效价一直维持在较高水平;确定了抗体琼扩效价≥1∶32或中和效价≥1∶320为临床应用效价标准。3批供试品临床应用试验结果表明,该鸭短喙侏儒综合征精制蛋黄抗体安全性好,对鸭短喙侏儒综合征有良好的预防和紧急预防效果。 相似文献
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V Wiedemann E Linckh R Kühlmann P Schmidt U L?sch 《Zentralblatt für Veterin?rmedizin. Reihe B. Journal of veterinary medicine. Series B》1991,38(4):283-291
A field study and a controlled infection trial showed the protective effect of egg yolk lyophilisate and whole egg lyophilisate against enterotoxic E. coli germs. The lyophilisates were gained from eggs of hens immunized against pilus antigen of porcine-enterotoxic E. coli. In a first field study using egg yolk antibodies, 92% of 299 diarrhea affected piglets were cured. In a further field study diarrhea affected piglets were cured after 3 days by application of egg yolk lyophilisate from immunized hens. Piglets treated only with egg yolk of not immunized hens showed no signs of recovery. The infection trial showed, that whole egg lyophilisate of immunized hens was as successful as a common antibiotic therapy in curing piglets, orally infected with 5 x 10(10) E. coli/feeding and animal. The present data show that chicken egg antibodies can be used for treatment of infectious diarrheal diseases in young animals. So far they represent a good alternative to the common used antibiotic therapy. 相似文献
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本试验利用猪流行性腹泻病毒(porcine epidemic diarrhea virus,PEDV)SC株免疫产蛋鸡,收集高免卵黄,采用水稀释法和水稀释-盐析法获得鸡源抗PEDV卵黄抗体,采用已建立的ELISA方法对卵黄抗体效价进行测定。以3日龄无母源抗体的易感仔猪为试验动物,对抗PEDV卵黄抗体的治疗效果及安全性进行测定,并进一步利用自然发病猪场的治疗效果进行验证。结果表明,经PEDV SC株细胞毒免疫的鸡可在2次加强免疫后15 d产生高水平的特异性抗体。在实验室治疗试验中,攻毒治疗组仔猪的存活率达60%,攻毒对照组存活率为20%;用于自然发病猪场时,饲喂抗PEDV卵黄抗体饲料的仔猪存活率亦为60%,而自然发病对照组的存活率为10%。以上结果表明抗PEDV卵黄抗体对感染PEDV的仔猪有一定治疗作用。 相似文献
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鸭传染性法氏囊病病原分离鉴定及防治试验 总被引：9，自引：0，他引：9
从疑似鸭传染性法氏囊病的病例中分离到 １ 株鸭传染性法氏囊病毒,该病毒可使 ７ 日龄健康鸭 １００％ 发病,发病鸭具有鸭传染性法氏囊病的典型病变,用鸡传染性法氏囊高免卵黄抗体预防和治疗鸭传染性法氏囊病取得了满意效果。 相似文献
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Production of antibodies to canine distemper virus in chicken eggs for immunohistochemistry 总被引：5，自引：0，他引：5
P Schmidt A Hafner G H Reubel R Wanke V Franke U L?sch E Dahme 《Zentralblatt für Veterin?rmedizin. Reihe B. Journal of veterinary medicine. Series B》1989,36(9):661-668
The present study describes the application of egg yolk antibodies in immunohistochemistry. In order to obtain specific antibodies against canine distemper virus (CDV), chickens were immunized with attenuated virus. Distinct antibody titres in serum and yolk could be detected by means of a modified plaque/focus immunoassay (ELISA) two weeks after a second immunization. The lower concentrations in corresponding yolk globulin preparations are attributed to the loss of antibodies caused by the isolation procedure (dextran and ammonium sulfate precipitation). After verification of the antibody specificity by indirect immunofluorescence technique high titred globulin fractions were employed in immunohistochemistry using the Avidin-Biotin-Complex method. A specific and distinct immunostaining in formalin fixed and paraffin embedded brain sections of CDV-infected dogs was obtained. The advantages of egg yolk antibodies for immunological purposes are discussed in detail. 相似文献
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The binding ability of staphylococcal protein A (SpA) and streptococcal protein G (SpG) to egg yolk antibodies of four fowl species (turkey, duck, moskovy duck and goose) was studied and compared with the binding ability to three serum antibodies from chicken, horse and cattle. SpA and SpG were not able to bind to any of the avian immunoglobulins. 相似文献
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Lobbedey L Schlatterer B 《Journal of veterinary medicine. B, Infectious diseases and veterinary public health》2003,50(2):81-85
A direct and an indirect antibody enzyme-linked immunosorbent assay for duck yolk IgY and duck serum IgY was developed and tested on egg yolk and serum of ducks vaccinated with Riemerella anatipestifer (Ra). Tests were performed either with primary antibodies labelled with horseradish peroxidase or with alkaline phosphatase-labelled secondary antibodies reacting with specifically bound rabbit anti-duck IgY antibodies, respectively. Ra-specific IgYs in egg yolk from three ducks increased rapidly at day 8 after the first of two vaccinations. In two ducks, the IgY titre persisted on a high plateau for 3 months. The concentration of Ra-specific IgYs in the serum of the progeny of vaccinees decreased between day 3 and day 10 after hatching. The fraction of total IgYs decreased less but also significantly. It was shown that antibodies were vertically transmitted and therefore protect offspring against Ra infection at least during the first week after hatching. The test design with anti-IgY rabbit antibodies is further suitable to detect other specific antibodies if respective antigens were fixed on solid phases. 相似文献
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抗牛多杀性巴氏杆菌高免卵黄抗体IgY的制备及间接血凝检测方法的建立 总被引：1，自引：0，他引：1
本研究通过自制牛源荚膜血清A型多杀性巴氏杆菌灭活菌苗免疫产蛋鸡,采用卡拉胶结合硫酸铵沉淀法提取卵黄抗体IgY,并采用间接血凝方法检测抗体效价。结果表明,抗原致敏红细胞的最佳浓度是800μg/mL,免疫后第7周抗体效价达到高峰,效价为1：1024,高效价持续5周开始下降,测定提取的IgY浓度为8.258mg/mL,无菌检测及动物安全性实验表明制备的卵黄抗体安全可靠。本研究制备了抗牛多杀性巴氏杆菌卵黄抗体,为防治由荚膜血清A型多杀性巴氏杆菌所致的犊牛肺炎提供了新的手段。 相似文献