共查询到19条相似文献,搜索用时 156 毫秒
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林逢生 《中国预防兽医学报》1988,(6)
引起猫、水貂及犬肠炎的病毒分别为猫泛白细胞减少症病毒、水貂病毒性肠炎病毒及犬细小病毒。这三种病毒均属于细小病毒科、细小病毒属。近年来,在安徽、河南、山东等地连续爆发家猫、云豹等猫科动物由猫泛白细胞减少症病毒引起的猫泛白细胞减少症。在黑龙江、辽宁等省的许多水貂场不断发生由水貂病毒性肠炎病毒引起的水貂病毒性肠炎。由犬细小病毒引起的犬、貂和狐狸的犬细小病毒肠炎,在全国许多地方亦有 相似文献
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水貂肠炎病毒高免卵黄抗体的制备及应用 总被引:2,自引:0,他引:2
用水貂肠炎病毒免疫蛋鸡制备卵黄抗体,结果表明,经5次免疫制备的卵黄抗体,于最后一次免疫第10天AGP效价达1:32,第30天效价为1:8。该抗体较稳定。4℃保存120天,-20℃保存180天效价不变。用该抗体治疗细小病毒肠炎病犬,治愈率达93.9%,证实用水貂肠炎病毒制备卵黄抗体是成功的,可用于国小病毒肠炎的治疗。 相似文献
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水貂细小病毒性肠炎灭活疫苗(MEVB株)是由中国农业科学院特产研究所、吉林特研生物技术有限责任公司共同研究开发的用于预防水貂细小病毒性肠炎的疫苗,该疫苗针对我国水貂细小病毒流行型——“B型”引起的肠炎而研制,相关试验表明,该疫苗能安全、有效地预防水貂细小病毒性肠炎,2009年12月11日被农业部批准为国家三类新兽药,证书编号为(2009)新兽药证字39号。 相似文献
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1水貂病毒性肠炎细胞培养灭活疫苗
水貂病毒性肠炎细胞培养灭活疫苗系是用水貂肠炎病毒强毒株经组织细胞培养后,收获细胞培养物,加入甲醛灭活,加入佐剂和稳定剂制成。该苗为淡红色混悬液,静置时上部为液体澄明,下部为少许褐色沉淀。一般保存于2-8℃的干燥阴暗处,保存的有效期为6个月。用于预防水貂、狐、貉等犬科、鼬科动物的病毒性肠炎,免疫持续期为6个月。预防接种应于貂、貉、狐仔畜分窝后2-3星期进行。疫区未发病的动物群可行紧急接种。皮下注射为水貂每只1毫升,种貂可在配种前20天再接种1毫升。 相似文献
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为研制貉细小病毒性肠炎疫苗,筛选出针对貉细小病毒性肠炎免疫原性好、安全高效的疫苗备选株,应用CRFK细胞从辽宁省发病貉的粪便中分离病毒,并通过形态学、血清学、分子生物学、动物回归及免疫接种等方法对分离株进行鉴定。鉴定结果表明成功分离出1株貉细小病毒,命名为LN10-1株。其VP2基因核苷酸序列与猕猴源猫泛白细胞综合征病毒株(BJ-22/2008/CHN株)相似性高达99.7%。VP2蛋白上决定宿主范围的2个氨基酸位点发生了突变。VP2基因种系发生分析显示,LN10-1株位于猫泛白细胞综合征病毒(Feline panleukopenia virus,FPLV)、蓝狐细小病毒(Blue fox parvovirus,BFPV)、水貂肠炎病毒(Mink enteritis virus,MEV)组成的食肉类动物细小病毒聚类分支与由犬细小病毒(Canine parvovirus,CPV)组成的聚类分支。由LN10-1株制备的灭活疫苗免疫结果显示,接种28d细小病毒中和抗体滴度可达到1∶256以上。推测LN10-1株可能正处于FPLV与CPV进化的中间状态,或是CPV适应新宿主(貉)而形成的一种新病毒,可以作为针对貉细小病毒性肠炎灭活疫苗的候选株。 相似文献
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WU Hongchao WANG Lingxiao HUO Ningning DING Hangtian CHEN Yalei XI Xiangfeng LIU Youcai LIU Yuxiu TIAN Kegong 《中国畜牧兽医》2007,47(11):3705-3712
The purpose of this study was to investigate the dynamic of mink enteritis virus (MEV) maternal antibody and the immune effects of subunit vaccines.The offspring of immunized female mink were studied,serum of 21,30,45 and 60 days old mink were collected to determine the HI titer of maternal antibody of MEV.25 healthy minks aged 47~52 days were selected to be inoculated with MEV genetic engineering subunit vaccine,and then blood samples were collected 14 d before and after immunization to determine MEV HI titer.The clinical symptoms and the titer of feces HA of mink enteritis virus were observed 14 d after immunization.Dying and surviving minks were euthanized 14 d after challenge,the duodenum,jejunum and ileum were collected for histopathological observation and immunohistochemical detection.The results showed that the MEV HI of the offspring of immunized female mink decreased gradually with the increase of day age,it was higher at 21 d of age,the MEV HI titer of some minks at 45 d was <1:32 and ≤ 1:4 at 60 d.The MEV HI titer of the control mink was not higher than 1:4 on 14 d after the preparation of qualified vaccine,while it was increased to 1:64~1:512 in immune group.Challenge protection tests showed that the immuned minks were 100% resistant to the attack of mink enteritis virus,and there was no abnormality in the mink's mental state,diet and feces,the HA titer of feces matter after challenge was 1:8~1:16.Histopathological and immunohisto-chemical tests showed that MEV genetic engineering subunit vaccine could well prevent the replication of virus in intestinal mucosal epithelial cells and the damage to intestinal epithelial cells.Therefore,the antibody titer was highest at 21 day-old after immunizing female mink,and the prepared vaccine could break through maternal antibody interference and produce high levels of antibodies when it immunized minks at about 50 d of age,and could resist the attack of mink enteritis virus virulent strain. 相似文献
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本研究旨在探索水貂肠炎病毒(mink enteritis virus,MEV)的母源抗体消长规律及其亚单位疫苗免疫效果。以免疫母貂所生仔貂为研究对象,采集21、30、45、60日龄仔貂血清,测定水貂病毒性肠炎母源抗体HI效价(MEV HI);选取25只47~52日龄健康水貂接种制备MEV基因工程亚单位疫苗,免疫前后14 d采血测定MEV HI效价;免疫后14 d进行水貂肠炎病毒攻毒临床症状观察,并测定粪便HA效价;攻毒后14 d对濒死和存活水貂安乐死,采集十二指肠、空肠和回肠进行病理组织学观察和免疫组化检测。结果显示,免疫母貂所产仔貂的MEV HI效价随着日龄的增加逐渐降低,在21日龄时较高,45日龄时少部分仔貂MEV HI效价<1:32,60日龄时大部分仔貂HI效价≤ 1:4;使用制备合格疫苗免疫后14 d对照组水貂的MEV HI效价均不高于1:4,免疫组MEV HI效价升高至1:64~1:512;攻毒保护试验表明,免疫组水貂100%抵抗水貂肠炎病毒强毒的攻击,水貂的精神、饮食、粪便等均未见异常,且攻毒后粪便HA效价为1:8~1:16;病理组织学和免疫组化检测结果表明,MEV基因工程亚单位疫苗能够很好地阻止病毒在肠黏膜上皮细胞的复制和对肠黏膜上皮细胞的损伤。因此,免疫母貂所生仔貂21日龄时体内抗体效价最高,制备的疫苗免疫50日龄左右的水貂时能够突破母源抗体干扰并产生高水平的抗体,能够抵抗水貂肠炎病毒强毒株的攻击。 相似文献
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健康水貂6只,3只作对照,另3只口服-20℃保存9个月的水貂细小病毒性肠炎粪毒。实验貂临床症状典型,小肠粘膜出现“气球样”上皮细胞,肠腺和绒毛上皮细胞广泛变性、坏死、脱落,胞浆内可见嗜酸性小体;胞核可见两种类型Cowdry A型包涵体;在肠系膜淋巴结、骨髓、脾和肾上腺也观察到了核内包涵体。在小肠绒毛上皮细胞膜上和肠腺腺腔中发现大量G-小杆菌。同时,用扫描电镜观察了各肠段粘膜表面的变化;用透射电镜研究了空肠前段粘膜上皮细胞中水貂细小病毒(MPV)的形态发生及其所引起的超微病变,发现核仁及其相随染色质参与了核内包涵体的形成。 相似文献
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为考察新研制的水貂犬瘟热Vero细胞活疫苗(CDV3-CL株,悬浮培养)的安全性,分别以一次单剂量(1头份)、单剂量重复和一次超剂量(10头份)接种动物,对疫苗进行全方位安全性评价,试验动物涉及水貂幼崽、育成水貂以及妊娠水貂等,重点观察注射动物的体温、食欲,生产性能是否发生改变、注射部位是否出现炎症反应以及实验动物接种部位组织病变等,连续观察15d,结果发现,实验动物没有发生炎症反应,动物体温变化也处于正常范围内,证明疫苗是安全的,从而为疫苗的推广奠定基础。 相似文献
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为获得对水貂具有免疫刺激活性的CpG ODN序列,设计合成了45种含不同CpG基序的DNA序列,应用MTS比色法测定合成CpG ODNs刺激水貂PBMC增殖的能力,结果有11条CpG ODN对水貂PBMC有刺激活性(SI>2);应用SI值大于5的6种CpG ODN分别与水貂伪狂犬灭活疫苗联合免疫水貂,免疫后经水貂血清抗伪狂犬中和抗体效价测定和水貂PBMC非特异性增殖效应检测,结果有3个CpG ODN序列对水貂具有较好免疫增强作用,分别是CpG-21(ATCGATTTGTCGTTATCGAT)、CpG-23(ATCGATGAACGTTAACGTTTC)和CpG-24(AACGTTCATCGATATCGATGT)。本研究获得3条对水貂具有较好免疫刺激活性的CpG ODN序列,可为水貂新型CpG佐剂的研究提供参考。 相似文献
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JIA Yun LI Yan-wu SUN Ming-ying ZHANG Xue ZHANG Yan-yan SONG Da-he LIU Zhao WANG Quan-kai SUN Ying-jie 《中国畜牧兽医》2016,43(6):1597-1603
Mink suspected infection aleutian mink disease virus (ADV) from mink breeding areas in Liaoning province were tested with CIEP method.The mink with antibody to ADV were selected and culled.Liver,spleen,kidney and mesenteric lymph node samples were taken for pathological examination and the viruses were observed under electron microscope.The grinded tissue fluid filter was added penicillin and treptomycin and inoculated into CRFK cells and passaged by 6 times for virus isolation.And cells cultures were identified as ADV by PCR.Then they were inoculated into healthy mink.Three days later,the mink showed clinical signs,which including the loss of appetite,anemia,hair dull,antifeedant and binge drinking.Some minks showed neurological symptoms,manifested symptoms of convulsions,cramps,staggering gait,ataxia,or hind limb paralysis and died.The virus strains isolated and identified were named as the ADV-LN. 相似文献
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本研究采用对流免疫电泳方法(CIEP)检测辽宁水貂养殖场疑似水貂阿留申病毒(aleutian mink disease virus,ADV)水貂血清抗体,采集抗体阳性水貂的肝脏、脾脏、肾脏和肠系膜淋巴结组织,电镜观察存在细小病毒样颗粒。组织液研磨无菌处理后,接种CRFK细胞,盲传6代,取病毒细胞分离液用PCR方法检测,呈ADV阳性。将病毒分离液纯化后接种健康水貂,隔离观察,接种后3 d即出现食欲减退,贫血,被毛无光泽,后期出现拒食、狂饮、死亡,个别水貂出现神经症状,表现抽搐、痉挛、步态蹒跚、共济失调,证明分离获得的病毒为ADV强毒株,命名为ADV-LN株。 相似文献