当前位置: X-MOL 学术BMC Vet. Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
An octavalent vaccine provides pregnant gilts protection against a highly virulent porcine parvovirus strain.
BMC Veterinary Research ( IF 2.6 ) Pub Date : 2020-02-12 , DOI: 10.1186/s12917-020-2272-3
Erwin van den Born 1 , Paul P M van den Elzen 1 , Emma van Kilsdonk 1 , Mathieu J H Hoeijmakers 1 , Ruud P A M Segers 1
Affiliation  

BACKGROUND Porcilis® Ery+Parvo+Lepto is an octavalent inactivated ready-to-use vaccine that contains Erysipelothrix rhusiopathiae (Ery), porcine parvovirus (PPV), and six serogroups of Leptospira (Lepto). The efficacy of Porcilis® Ery + Parvo+Lepto against reproductive problems associated with porcine parvovirus (PPV) infection was evaluated in pregnant gilts. For this, a group of ninegilts was vaccinated twice (at 5 and 6 months old) with Porcilis® Ery + Parvo+Lepto (Group 1), while a group of eight gilts was included as unvaccinated controls (Group 2). All pigs were artificially inseminated 4 weeks after the second vaccination. They were challenged during early gestation with PPV-27a, a virulent cluster D strain, and euthanized to collect their offspring by hysterectomy around day 90 in pregnancy. Antibody responses against PPV in gilts were measured, and the presence of PPV in progeny was also determined. RESULTS No clinical signs were observed after vaccination. After PPV challenge, all foetuses from the vaccinated gilts were alive (132/132), while in the unvaccinated group only 41% were alive (46/112), 19.6% were dead and 39.4% of the offspring (44/112) were mummified. PPV could be detected by qPCR in 14% of the progeny from vaccinated gilts at an average of 4.7 log10/ml, whereas this was significantly higher in the control group, where 90% of the progeny were PPV positive, with titres of 9.8 log10/ml on average. CONCLUSIONS The present study demonstrates that vaccination of gilts with Porcilis® Ery + Parvo+Lepto was safe and induced an immune response sufficient to protect progeny against PPV by reducing transplacental infection.

中文翻译:

八价疫苗可为怀孕的小母猪提供针对高毒力猪细小病毒株的保护。

背景技术Porcilis®Ery + Parvo + Lepto是八价灭活的即用型疫苗,其中包含猪丹毒,细小病毒(PPV)和六个钩端螺旋体(Lepto)血清群。在孕妇小母猪中评估了Porcilis®Ery + Parvo + Lepto对与猪细小病毒(PPV)感染相关的生殖问题的功效。为此,一组九头小母猪用Porcilis®Ery + Parvo + Lepto接种了两次(分别在5和6个月大时)(第1组),而一组八头小母猪作为未接种的对照(第2组)。第二次疫苗接种后4周,所有猪均进行了人工授精。在妊娠早期,他们使用强毒的D簇PPV-27a对其进行攻击,并在妊娠90天左右通过子宫切除术对他们的后代实施安乐死。测量了小母猪对PPV的抗体反应,并确定了子代中PPV的存在。结果疫苗接种后未观察到临床体征。PPV攻击后,所有接种后备母猪的胎儿均存活(132/132),而未接种组中只有41%存活(46/112),死亡19.6%,后代39.4%(44/112)木乃伊。通过qPCR在接种后备母猪的14%子代中可以检测到PPV,平均为4.7 log10 / ml,而在对照组中则更高,在对照组中90%的子代PPV阳性,滴度为9.8 log10 / ml。毫升平均。结论本研究表明,用Porcilis®Ery + Parvo + Lepto接种后备母猪是安全的,并可诱导免疫反应,足以通过减少胎盘感染来保护子代免受PPV侵害。并且还确定了子代中PPV的存在。结果疫苗接种后未观察到临床体征。PPV攻击后,所有接种后备母猪的胎儿均存活(132/132),而未接种组中只有41%存活(46/112),死亡19.6%,后代39.4%(44/112)木乃伊。通过qPCR在接种后备母猪的14%子代中可以检测到PPV,平均为4.7 log10 / ml,而在对照组中则更高,在对照组中90%的子代PPV阳性,滴度为9.8 log10 / ml。毫升平均。结论本研究表明,用Porcilis®Ery + Parvo + Lepto接种后备母猪是安全的,并可诱导免疫反应,足以通过减少胎盘感染来保护子代免受PPV侵害。并且还确定了子代中PPV的存在。结果疫苗接种后未观察到临床体征。PPV攻击后,所有接种后备母猪的胎儿均存活(132/132),而未接种组中只有41%存活(46/112),死亡19.6%,后代39.4%(44/112)木乃伊。通过qPCR在接种后备母猪的14%子代中可以检测到PPV,平均为4.7 log10 / ml,而在对照组中则更高,在对照组中90%的子代PPV阳性,滴度为9.8 log10 / ml。毫升平均。结论本研究表明,用Porcilis®Ery + Parvo + Lepto接种后备母猪是安全的,并可诱导免疫反应,足以通过减少胎盘感染来保护子代免受PPV侵害。结果疫苗接种后未观察到临床体征。PPV攻击后,所有接种后备母猪的胎儿均存活(132/132),而未接种组中只有41%存活(46/112),死亡19.6%,后代39.4%(44/112)木乃伊。通过qPCR在接种后备母猪的14%子代中可以检测到PPV,平均为4.7 log10 / ml,而在对照组中则更高,在对照组中90%的子代PPV阳性,滴度为9.8 log10 / ml。毫升平均。结论本研究表明,用Porcilis®Ery + Parvo + Lepto接种后备母猪是安全的,并可诱导免疫反应,足以通过减少胎盘感染来保护子代免受PPV侵害。结果疫苗接种后未观察到临床体征。PPV攻击后,所有接种后备母猪的胎儿均存活(132/132),而未接种组中只有41%存活(46/112),死亡19.6%,后代39.4%(44/112)木乃伊。通过qPCR在接种后备母猪的14%子代中可以检测到PPV,平均为4.7 log10 / ml,而在对照组中则更高,在对照组中90%的子代PPV阳性,滴度为9.8 log10 / ml。毫升平均。结论本研究表明,用Porcilis®Ery + Parvo + Lepto接种后备母猪是安全的,并可诱导免疫反应,足以通过减少胎盘感染来保护子代免受PPV侵害。接种后备母猪的所有胎儿均活着(132/132),而未接种组中只有41%活着(46/112),死亡了19.6%,后代39.4%(44/112)被木乃伊了。通过qPCR在接种后备母猪的14%子代中可以检测到PPV,平均为4.7 log10 / ml,而在对照组中则更高,在对照组中90%的子代PPV阳性,滴度为9.8 log10 / ml。毫升平均。结论本研究表明,用Porcilis®Ery + Parvo + Lepto接种后备母猪是安全的,并可诱导免疫反应,足以通过减少胎盘感染来保护子代免受PPV侵害。接种后备母猪的所有胎儿均活着(132/132),而未接种组中只有41%活着(46/112),死亡了19.6%,后代39.4%(44/112)被木乃伊了。通过qPCR在接种后备母猪的14%子代中可以检测到PPV,平均为4.7 log10 / ml,而在对照组中则更高,在对照组中90%的子代PPV阳性,滴度为9.8 log10 / ml。毫升平均。结论本研究表明,用Porcilis®Ery + Parvo + Lepto接种后备母猪是安全的,并可诱导免疫反应,足以通过减少胎盘感染来保护子代免受PPV侵害。通过qPCR在接种后备母猪的14%子代中可以检测到PPV,平均为4.7 log10 / ml,而在对照组中则更高,在对照组中90%的子代PPV阳性,滴度为9.8 log10 / ml。毫升平均。结论本研究表明,用Porcilis®Ery + Parvo + Lepto接种后备母猪是安全的,并可诱导免疫反应,足以通过减少胎盘感染来保护子代免受PPV侵害。通过qPCR在接种后备母猪的14%子代中可以检测到PPV,平均为4.7 log10 / ml,而在对照组中则更高,在对照组中90%的子代PPV阳性,滴度为9.8 log10 / ml。毫升平均。结论本研究表明,用Porcilis®Ery + Parvo + Lepto接种后备母猪是安全的,并可诱导免疫反应,足以通过减少胎盘感染来保护子代免受PPV侵害。
更新日期:2020-02-12
down
wechat
bug