畜牧兽医学报 ›› 2015, Vol. 46 ›› Issue (5): 836-840.doi: 10.11843/j.issn.0366-6964.2015.05.021

• 预防兽医 • 上一篇    下一篇

抗性选育协同疫苗免疫对鸡羽囊马立克病毒载量的影响

金元昌1,2*,陈壮1,李玉峰1,袁志栋1   

  1. (1.湖南科技大学 生命科学学院,湘潭 411201; 2.广西大学 养禽与禽病研究所,南宁 530004)
  • 收稿日期:2014-09-17 出版日期:2015-05-23 发布日期:2015-05-23
  • 通讯作者: 金元昌,E-mail:404340774@qq.com
  • 作者简介:金元昌(1969-),男,山东日照人,副教授,博士,主要从事分子病毒学与基因工程方面的研究
  • 基金资助:

    湖南省自然科学基金项目(13JJ6055);湖南省普通高校化学与生物科学类专业大学生创新训练中心(G21323);湖南科技大学化学与生物学省级大学生创新训练中心项目

Effects of Resistance Selection in Coordination with Vaccination on MDV-1 Loads in Feather Follicle of Chickens

JIN Yuan-chang1,2* ,CHEN Zhuang1,LI Yu-feng1,YUAN Zhi-dong 1   

  1. (1.College of Life Science,Hunan University of Science and Technology,Xiangtan 411201,China;2.Poultry Science and Health,Guangxi University,Nanning 530004,China)
  • Received:2014-09-17 Online:2015-05-23 Published:2015-05-23

摘要:

为了研究马立克病(MD)火鸡疱疹病毒(HVT)疫苗接种和抗性选育对鸡马立克病毒(MDV-1)攻毒后羽囊中病毒载量的影响,选择普通霞烟鸡及其MD抗性品系,利用MDV-1攻毒后第7、14、21、28和35 天(DPI)五次采集并分离的全部试验鸡的羽囊为材料,采用Real-time FQ-PCR技术对这些材料中meq基因进行绝对定量分析以确定其病毒载量,用来分析比较MDV-1在MD抗性/普通鸡及HVT疫苗免疫/HVT疫苗未免疫鸡体内的增殖情况。结果显示:1)从MD抗性对病毒载量的影响看,一方面,普通非免疫攻毒组(F组)的MDV-1含量于14、21DPI时显著(P<0.05)高于MD抗性非免疫攻毒组(T组);另一方面,MD抗性免疫攻毒组(R组)的MDV-1含量总体上却和普通免疫攻毒组(G组)相当。2)从HVT疫苗免疫对病毒载量的影响看,一方面,MD抗性非免疫攻毒组(T组)的MDV-1含量于28 DPI时显著(P<0.05)高于MD抗性免疫攻毒组(R组);另一方面,普通非免疫攻毒组(F组) 的MDV-1含量于14、21 DPI时显著(P<0.05)高于普通免疫攻毒组(G组)。3)从MD抗性协同HVT疫苗免疫对病毒载量的影响看,普通非免疫攻毒组(F组)的MDV-1含量于14(P<0.05)、28(P<0.01)、35(P<0.05)DPI时显著高于MD抗性免疫攻毒组(R组)。结果表明,鸡MD抗性选育协同HVT疫苗接种可显著降低鸡羽囊的病毒载量,这将会降低MDV-1传播风险,并提高鸡的存活机会。

Abstract:

The aim of the present study was to study the effects of HVT-vaccinated and MD resistant selection on virus loads in feather follicle of chickens after the challenge with MDV-1.Real-time FQ-PCR was used for absolute quantification of the DNA levels of meq of feather follicle sampled in 5 different times(7,14,21,28,35 DPI) from all chickens after the challenge for quantification of MDV-1.The load of MDV-1 was detected in feather follicle to analyzed and compared proliferation of MDV-1 in resistant/common or/and HVT-vaccinated/HVT-unvaccinated chickens.The results showed that 1) from the impact of MD-resistant on the MDV-1 loads,the load of MDV-1 were significantly higher in chickens of F group(common line,HVT-unvaccinated and MDV-challenged) whereas significantly lower(P<0.05) in chickens of T group(MD-resistant line,HVT-unvaccinated and MDV-challenged) in 14,21 DPI;On the one hand,R group(MD-resistant line,HVT-vaccinated and MDV-challenged) and G group(common line,HVT-vaccinated and MDV-challenged) give about the same load of MDV-1;2) From the impact of HVT-vaccinated on the MDV-1 loads,the load of MDV-1 were significantly higher in chickens of T group(MD-resistant line,HVT-unvaccinated and MDV-challenged) whereas significantly lower(P<0.05) in chickens of R group(MD-resistant line,HVT-vaccinated and MDV-challenged) in 28 DPI;On the one hand,the load of MDV-1 were significantly higher in chickens of F group(common line,HVT-unvaccinated and MDV-challenged) whereas significantly lower(P<0.05)in chickens of G group(common line,HVT-vaccinated and MDV-challenged) in 14,21 DPI:3) From the impact of MD-resistant and HVT-vaccinated on the MDV-1 loads,the load of MDV-1 were significantly higher in chickens of F group(common line,HVT-unvaccinated and MDV-challenged) whereas significantly lower in chickens of R group(MD-resistant line,HVT-vaccinated and MDV-challenged) in 14(P<0.05),28(P<0.01) and 35(P<0.05)DPI.These results indicated that the virus loads in feather follicle of chickens can be reduced significantly by resistance selection in coordination with vaccination,which will reduce the risk of MDV-1 transmission and improve the chicken’s chance of survival.

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