Citation: JIANG Shi-jin, MENG Shan-shan, CUI Zhi-zhong, TIAN Fu-lin, WANG Zeng-fu. Epidemic Investigation of Co-infection of MDV,CAV and REV in Spontaneous Diseased Chicken Flocks in China .VIROLOGICA SINICA, 2005, 20(2) : 164-167.

Epidemic Investigation of Co-infection of MDV,CAV and REV in Spontaneous Diseased Chicken Flocks in China

  • Available online: 20 April 2005
  • The tissues samples of 828 chickens suspected to be infected by immunodepressive viruses from 42 shicken flocks were collected in Shandong, Henan,Hebei,Beijing,Jiangsu,Guangdong,Guangxi,Sichuan,Jilin,Liaoning and Taiwan,and the DNA was extracted for hybridization in Dot-blot with probes for Marek′s disease virus(MDV), Reticuloendotheliosis virus(REV) and Chicken anemia virus(CAV). The results indicated that the checkout ratios of the three viruses are 83.94%(MDV),61.0%(CAV)and 57.25%(REV);the ratios of triple infection,dual infection,single infection and negative are 44.69%,31.16%,15.34% and 8.82%; respectively;29 of 42 chicken flocks occur triple infection(69.05%),5 ones occur dual infection of MDV and CAV(11.90%)3 ones occur dual infection of MDV and REV(7.14%),and two ones not occur MDV、CAV and REV; all the 11 provinces exist MDV,CAV and REV. The results indicated that existing in wide range and co-infection of MDV,CAV and REV in chickens are the important causations for descent of poultry production performance , high incidence opport unistically pat hogenicdiseases and int umescentia provent ricularis in China.

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    Epidemic Investigation of Co-infection of MDV,CAV and REV in Spontaneous Diseased Chicken Flocks in China

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    Abstract: The tissues samples of 828 chickens suspected to be infected by immunodepressive viruses from 42 shicken flocks were collected in Shandong, Henan,Hebei,Beijing,Jiangsu,Guangdong,Guangxi,Sichuan,Jilin,Liaoning and Taiwan,and the DNA was extracted for hybridization in Dot-blot with probes for Marek′s disease virus(MDV), Reticuloendotheliosis virus(REV) and Chicken anemia virus(CAV). The results indicated that the checkout ratios of the three viruses are 83.94%(MDV),61.0%(CAV)and 57.25%(REV);the ratios of triple infection,dual infection,single infection and negative are 44.69%,31.16%,15.34% and 8.82%; respectively;29 of 42 chicken flocks occur triple infection(69.05%),5 ones occur dual infection of MDV and CAV(11.90%)3 ones occur dual infection of MDV and REV(7.14%),and two ones not occur MDV、CAV and REV; all the 11 provinces exist MDV,CAV and REV. The results indicated that existing in wide range and co-infection of MDV,CAV and REV in chickens are the important causations for descent of poultry production performance , high incidence opport unistically pat hogenicdiseases and int umescentia provent ricularis in China.

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