共查询到19条相似文献，搜索用时 296 毫秒
1.
2.
对我国禽用生物制品基本现状及2013～2022年禽用病毒类生物制品的质量情况进行了总结,分析了存在的问题,提出了强化SPF鸡（鸡胚）质量控制、持续开展风险监测方法研究、完善禽用标准物质、推动禽用新型生物制品研制的建议。 相似文献
3.
我国兽用生物制品技术的发展历程与展望 总被引：3，自引：0，他引：3
兽用生物制品(或称兽医生物制品)可以分为以下四类:1、疾病预防用生物制品,包括细菌、病毒、寄生虫疫苗和类毒素等;2、疾病治疗用生物制品,包括高免血清、高免蛋黄抗体、抗毒素及干扰素等;3、诊断检测用生物制品,包括抗原、抗体等;4、免疫调节类生物制品,包括免疫调节剂和微生念制剂等. 相似文献
4.
《中国饲料》2019,(3):1-1
近日,农业农村部办公厅发布通知(农办牧〔2018〕81号),公布了兽药临床试验质量管理规范监督检查结果(第二批)。青岛农业大学和中国农业大学2家单位的8个试验项目符合兽药临床试验质量管理规范(简称“兽药GCP”)要求。青岛农业大学符合要求的项目是猪药效评价试验、猪药效评价田间试验、猪靶动物安全性试验、宠物类药代动力学试验;中国农业大学符合要求的项目是猪安全性试验(兽用生物制品)、猪有效性试验(兽用生物制品)、禽类安全性试验(兽用生物制品)、禽类有效性试验(兽用生物制品)。通知要求各省级畜牧兽医行政管理部门切实做好日常监督管理工作,督促相关单位按照兽药GCP要求开展兽药研究活动。 相似文献
5.
《国外畜牧学(猪与禽)》2019,(1)
正上海佳牧生物制品有限公司隶属于上海市农业科学院,是集兽用生物制品科研、中试、生产、经营及技术服务于一体的科技型企业。公司依托上海市农业科学院畜牧兽医研究所技术支撑,设立兽用疫苗研发平台,其中研究员13名,副研究员6名,目前公司即将向市场推出猪细小病毒灭活疫苗、仔猪大肠杆菌三价灭活苗、猪圆环病毒灭活疫苗等猪用系列疫苗产品。寻求与畜牧业同仁真诚合作、携手共赢,现诚招省级区域经销商(每省一家),全权代理本公司产品。 相似文献
6.
为建立一种快速检测兽用生物制品中支原体污染的方法,试验根据GenBank上登录的支原体16S rRNA种属保守区序列设计1对引物,经PCR条件优化,建立了检测兽用生物制品中支原体污染的PCR方法。结果表明:该方法对大肠杆菌、沙门氏杆菌、巴氏杆菌、猪链球菌、猪圆环病毒2型、猪伪狂犬病毒、猪瘟病毒、猪繁殖与呼吸综合征病毒、新城疫病毒的扩增结果均为阴性;对鸡毒支原体、猪肺炎支原体、禽滑液支原体基因组DNA的检测灵敏度分别达到0.13,0.88,0.14 ng,与培养法的符合率达98.84%;应用该方法对鸡胚、血清、细胞等140份临床样品进行支原体污染的检测,阳性污染率达6.43%。表明PCR方法检测具有良好的特异性、敏感性、准确性和适用性,可用于兽用生物制品生产中鸡胚、血清、细胞、疫苗半成品等的质量控制和疫苗的质量检验。 相似文献
7.
猪细小病毒（Porcine Parvovirus,PPV）血凝抑制试验抗原、阳性血清和阴性血清在猪细小病毒制品的效力检验中不可或缺,对猪细小病毒相关生物制品的质量控制至关重要。试验采用PPV 7909株病毒同步接种PK-15细胞制备血凝抑制试验抗原,用制备的抗原乳化后免疫豚鼠制备阳性血清,同时用未免疫的阴性豚鼠制备阴性血清。对抗原、阳性血清和阴性血清进行鉴定,结果表明,制备的PPV血凝抑制试验抗原HA效价达1:512;阳性血清HI效价达1:1024;阴性血清HI效价＜1:8,且特异性均良好。利用制备的血凝抑制试验抗原、阳性血清与不同PPV疫苗株的灭活抗原、阳性血清进行交叉反应试验,结果表明,制备的抗原与阳性血清具备良好的血清学交叉反应性,可用于PPV制品的统一评价。 相似文献
8.
兽医生物制品用种蛋孵化前的处理吴金，守卫利（黑龙江省生物制品厂，哈尔滨１０００６９）目前，我们兽医生物制品还不能全部采用ＳＰＦ蛋，而是用非免疫蛋来生产病毒活疫苗，种蛋质量的好坏直接影响疫苗的质量，为此，种蛋在孵化前应注意以下几点。一、种蛋的选择种蛋应... 相似文献
9.
目的本研究旨在建立一种适用于临床样品和动物源性生物制品中猪伪狂犬病毒和猪细小病毒同时检测的双重PCR技术。方法针对猪伪狂犬病毒(PRV)的gE基因和猪细小病毒(PPV)的VP2基因的保守区域分别设计引物。结果经条件优化后,所建立的双重PCR方法能特异性地检测出样品中的PRV(581bp)和PPV(202bp)。结论本方法具有良好的特异性、敏感性和稳定性,适用于临床样品中对PRV和PPV的同时检测,也可用于猪源性生物制品的检测。 相似文献
10.
陈晓清 《上海畜牧兽医通讯》2009,(3):71-71
猪细小病毒病抗体的测定有血清中和试验、酶联免疫吸附试验、琼脂扩散试验和补体试验等，比较简便的方法是血凝抑制试验。在我国的《兽用生物制品质量标准》中，猪细小病毒病抗体的测定也是用血凝抑制试验方法。当病毒与红细胞发生凝集，这种现象叫做红细胞凝集现象，而病毒被特异性免疫血清所抑制，即红细胞凝集抑制试验，猪细小病毒病抗体含量就是利用这个原理来测定的。 相似文献
11.
柏凤岗 《畜牧兽医科学(电子版)》2021,(4):180-181
近年人们生活水平提高,人们对猪肉的消费水平也随之提高,对猪肉产品绿色健康的品质要求也逐渐升高。由于集约化、一体化养殖规模扩大,猪只相关疾病也逐渐增多。1925年中国首次出现猪瘟疫情,给中国养猪业造成巨大的经济损失。猪瘟兔化弱毒疫苗在中国问世,极大缓解了猪瘟疫情,但仍会出现零星散发的状态。该文将对猪瘟进行全面阐述,以期为临床上预防和治疗猪瘟提供强有力的理论支持。 相似文献
12.
G Mitev P Tekerlekov M Dilovsky D Ognianov E Nikolova 《Archiv fuer experimentelle veterinaermedizin》1978,32(1):29-33
Tests for associated immunization of swine against Foot and Mouth Disease (FMD) and Vesicular Disease (SVD) of swine were carried out. As a result of this investigation, it was established that the prepared and tested inactivated oil vaccine is harmless and immunogenic in sensitive animals. In investigating the course of immunity, the presence of antibody against both antigens was demonstrated in vaccinated animals. All once-vaccinated animals were defended against the virus of SVD during challenge, and 75% of them were defended against FMD. After revaccination, all immunized swine were defended against infection with both viruses. The question of the quality of the associated vaccine and the possibilities of its massive use in industrial swine rearing was discussed. 相似文献
13.
14.
In early 2007, H2N3 influenza virus was isolated from a duck and a chicken in two separate poultry flocks in Ohio. Since the same subtype influenza virus with hemagglutinin (H) and neuraminidase (N) genes of avian lineage was also identified in a swine herd in Missouri in 2006, the objective of this study was to characterize and compare the genetic, antigenic, and biologic properties of the avian and swine isolates. Avian isolates were low pathogenic by in vivo chicken pathogenicity testing. Sequencing and phylogenetic analyses revealed that all genes of the avian isolates were comprised of avian lineages, whereas the swine isolates contained contemporary swine internal gene segments, demonstrating that the avian H2N3 viruses were not directly derived from the swine virus. Sequence comparisons for the H and N genes demonstrated that the avian isolates were similar but not identical to the swine isolates. Accordingly, the avian and swine isolates were also antigenically related as determined by hemagglutination-inhibition (HI) and virus neutralization assays, suggesting that both avian and swine isolates originated from the same group of H2N3 avian influenza viruses. Although serological surveys using the HI assay on poultry flocks and swine herds in Ohio did not reveal further spread of H2 virus from the index flocks, surveillance is important to ensure the virus is not reintroduced to domestic swine or poultry. Contemporary H2N3 avian influenza viruses appear to be easily adaptable to unnatural hosts such as poultry and swine, raising concern regarding the potential for interspecies transmission of avian viruses to humans. 相似文献
15.
R F Meyer C C Brown T W Molitor V N Vakharia 《Journal of veterinary diagnostic investigation》1989,1(4):329-332
Biotinylated complementary DNA (cDNA) and RNA probes were prepared from a specific and highly conserved section of the foot-and-mouth disease virus (FMDV) genome coding for the RNA-dependent RNA polymerase. Hybridization was conducted on FMDV-infected, bovine enterovirus (BEV)-infected, and noninfected swine kidney cell cultures. The detection system utilized the enzyme system streptavidin-alkaline phosphatase, the substrate phosphate, and the chromogen nitroblue tetrazolium. Intense cytoplasmic granular staining was present at 2 and 4 hr postinfection (hpi), with less staining observed at 24 hpi. The staining was specific for FMDV, as indicated by a lack of staining of noninfected cells and BEV-infected cells. With the RNA probe, positive cells were detected up to the highest viral dilution assayed, which was approximately 96 TCID50. The cDNA probe was slightly less sensitive, detecting positive cells at 10-fold lower dilutions. This technique could prove useful in the diagnosis of foot-and-mouth disease in animals or in the detection of FMDV in biologics submitted for importation. 相似文献
16.
Influenza A is a respiratory disease common in the swine industry. Three subtypes, H1N1, H1N2 and H3N2 influenza A viruses, are currently co-circulating in swine populations in Korea. An outbreak of the highly pathogenic avian influenza H5N1 virus occurred in domestic bird farms in Korea during the winter season of 2003. Pigs can serve as hosts for avian influenza viruses, enabling passage of the virus to other mammals and recombination of mammalian and avian influenza viruses, which are more readily transmissible to humans. This study reports the current seroprevalence of swine H1 and H3 influenza in swine populations in Korea by hemagglutination inhibition (HI) assay. We also investigated whether avian H5 and H9 influenza transmission occurred in pigs from Korea using both the HI and neutralization (NT) tests. 51.2% (380/742) of serum samples tested were positive against the swine H1 virus and 43.7% (324/742) were positive against the swine H3 virus by HI assay. The incidence of seropositivity against both the swine H1 virus and the swine H3 virus was 25.3% (188/742). On the other hand, none of the samples tested showed seropositivity against either the avian H5 virus or the avian H9 virus by the HI and NT tests. Therefore, we report the high current seroprevalence and co-infectivity of swine H1 and H3 influenza viruses in swine populations and the lack of seroepidemiological evidence of avian H5 and H9 influenza transmission to Korean pigs. 相似文献
17.
采用RT-PCR技术对分离的H1N1亚型猪流感病毒的HA基因进行了扩增,将获得的PCR产物与pMD18-T载体连接,进行序列测定。同源性分析结果表明,分离毒株与其他H1N1亚型猪流感病毒的HA基因核苷酸同源性为70.7%～90.8%,与A/swine/Zhejiang/1/2007的同源性最高,与其他毒株的同源性相对较低。系统进化树分析结果表明,山东分离株的HA基因与欧洲谱系猪流感病毒进化关系最近,证明该分离株可能来源于北美谱系和欧亚谱系猪流感病毒的重组。 相似文献
18.
猪无名高热综合征临床病例研究 总被引：2，自引：2，他引：0
通过电镜直接观察从吉林省、辽宁省部分地区收集到的猪无名高热综合征病料,发现主要为猪繁殖与呼吸综合征病毒、副粘病毒、猪瘟病毒;将从吉林省的无名高热综合征病料中分离到的副粘病毒、病料原液以及由病料制得的自家灭活疫苗分别接种到血清检测无名高热综合征主要病原抗体阴性的健康仔猪,同时设立阴性对照,对临床感染的仔猪进行了病理变化、病毒分离、细菌检测等方面的鉴定分析,对无名高热综合征病原的致病特点、发病规律和灭活疫苗使用中出现的抗体依赖性增强作用（ADE）进行了探讨研究。结果表明：初步认定两省部分地区无名高热综合征的主要病原体为PRRSV,由病料所制得灭活疫苗在活体中具有抗体依赖性增强现象。 相似文献
19.
J F Edwards R J Yedloutschnig A H Dardiri J J Callis 《Canadian journal of veterinary research》1987,51(3):358-362
Virus isolation was attempted from 262 field samples of vesicular material collected during the outbreaks of vesicular exanthema of swine in the U.S.A. from 1952-54. Using primary swine kidney culture, viral cytopathogenic agents were isolated from 76.3% of the samples. However, an overall recovery rate of 82.1% was obtained after samples negative in tissue culture were inoculated intradermally in susceptible swine. All vesicular exanthema of swine virus isolates were identified as serotype B51 using complement fixation and serum neutralization tests. Two isolates did not react with antisera to known vesicular agents of swine and failed to produce vesicles or clinical signs of disease upon inoculation in swine. One vesicular exanthema of swine virus isolate from tissue of equine origin was pathogenic for swine but produced limited vesiculation at the site of intradermalingual inoculation in the tongue of a pony infected experimentally. Type B51 virus was reisolated from lesions produced in the pony and the pony became seropositive for virus type B51. 相似文献