›› 2016, Vol. 43 ›› Issue (9): 2474-2482.doi: 10.16431/j.cnki.1671-7236.2016.09.037

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Study on the Effect of Infectious Bronchitis Virus and Newcastle Disease Virus on Proliferation and Immune Interference

ZHANG Dong-tao, SONG Zhen-wei, ZHOU Xue-zhang   

  1. Key Laboratory of Ministry of Education for Protection and Utilization of Special Biological Resources in the Western China, Ningxia University, Yinchuan 750021, China
  • Received:2016-01-01 Online:2016-09-20 Published:2016-09-20

Abstract:

This experiment aimed to investigate the proliferation interference effects of the infectious bronchitis virus (IBV) and Newcastle disease virus (NDV),analyze the immune interference of two vaccines in the immune process,and provide a basis for determining vaccine immune program.This experiment was in a complete randomized design,10-day-old allantoic cavity of the chick embryo was inoculated with different concentrations of IBV and NDV and with a mixture of different concentrations of IBV and NDV,and then the allantoic fluid was collected for determination of the titer of hemagglutination (HA).Furthermore,BALB/c mice and SPF chicken were immunized with different concentrations of IBV and NDV and also with the mixed IBV and NDV with different concentrations,the blood of mice and chicken were collected,and antibody titer and inhibitory titer of IBV and NDV were determined by indirect enzyme linked immunosorbent assay (ELISA) and hemagglutination inhibition (HI) test.Experimental results showed that in the homeomorphic cultivation research,whether IBV and NDV were inoculated in a different order or inoculated at the same time,the inoculation of IBV behaved interference to the NDV,while the inoculation of NDV had no interference effects to IBV;Mice were inoculated with IBV and NDV,IBV and NDV antibody titers were lower than single immunized group,immune procedures and immune intervals often had effect on the titer of IBV and NDV antibody,IBV had interference on the immune effect of NDV,different needle mixed immunization can improve the antibody titer of IBV and NDV.In the group of SPF chicken inoculated with IBV and NDV,the order of the inoculation and the immune interval had effect on the titer of IBV and NDV antibody,IBV had a interference on the immune effect of NDV;In the immune serum inhibitory test,the data showed that the IBV and NDV antibody production were affected by the immune order of the inoculation and the interval,the effect on the NDV antibody was more obvious,but with the increase of the immune interval,the antibody level of IBV and NDV showed an increasing trend,the chicken was more sensitive than the mice to reflect the immune interference of IBV on NDV.IBVand NDV antibodies titer was also reduced in the groups that was inoculated with the mixed IBV and NDV,IBV had a interference on the immune effect of NDV.In the homeomorphic cultivation research and animal research,IBV behaved interference to the NDV,while NDV had no interference effects to IBV.IBV and NDV antibody titers decreased when mixed immunization,IBV had a interference on the immune effect of NDV.The order of the inoculation and the immune interval had effect on the antibody titer of IBV and NDV,but with the increase of the immune interval,the antibody level of IBV and NDV showed an increasing trend.

Key words: infectious bronchitis virus; Newcastle disease virus; interference effects; vaccine

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