›› 2007, Vol. 34 ›› Issue (2): 102-104.

• 疾病防治 • Previous Articles     Next Articles

A Cross Immunoprophylaxis Experiment with Epidemic Avian NDV Strain and Avian NDV Strain

LIU Yan1，XUN Laiwu2，YANG Xiaohua1，HE Huachuan2
   

  1. 1．Yunnan Agricultural Vocationaltechnical College，Kunming 650212，China； 2.Yunnan Domestic Animal Frozen Semen Station，Kunming 650212，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-02-20 Published:2007-02-20

Abstract: 12 day old chicken, which averange titres of NDV antibodies is 2log2, was immunized with the oil adjuvant NDV velogenic strains vaccine and the oil adjuvant NDV La Sota strains vaccine. After the inoculability, the serum was pooled every week, and the titres of NDV antibodies was showed by the MicroHIA. The peak titres of NDV antibodies was appeared the 21th day, and the 6log2 high titres was keeping above 30 days. 40 days later in the immunization, the chicken were challenged by NDV velogenic isolates and NDVF48E9 isolates, and no chicken was infected. The percentage of protection from the two vaccines are 100%. The test of challege indicated that immunigenicity difference between the oil adjuvant NDV velogenic strains vaccine and the oil adjuvant NDV LaSda strains vaccine is not remarkable.

Key words: epidemic NDV strain; NDV strain; immunoprophylaxis

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