Fujian Journal of Agricultural Sciences ›› 2017, Vol. 32 ›› Issue (9): 926-931.doi: 10.19303/j.issn.1008-0384.2017.09.002

• Animal Science • Previous Articles     Next Articles

Immunological Effect on Egg-laying Chickens by Combining Vaccinations Against Newcastle and Infectious Bursal Diseases

XING Dong1, LIU Meng-xi1, YUAN Xiao-qin1, LI Chun-yan1, CHEN Shi-yi1, JIANG Xing-hua2, ZHAO Hua-e2, BAO Song-ying2, WANG Quan-xi1   

  1. 1. College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;
    2. Fuzhou Dabeinong Biotech Co. Ltd, Fuzhou, Fujian 350002, China
  • Received:2017-02-17 Revised:2017-06-17 Online:2017-09-28 Published:2017-09-28

Abstract: Immunological effect of combined inoculation of the inactivated vaccines for Newcastleand the infectious bursal diseases (ND-IBD) on egg-laying chickens was investigated. For the study, 360 one-day-old commercial chicks were randomly divided into 3 groups. The chicks in one group were immunized immediately with the two vaccines simultaneously, another when they were 7-day-old, and the third group injected with saline solution as control.Levels of ND-IBD antibodies in the serum ofthese chicks were determined, spleen biopsies for disease detection executed, and qPCR on mRNA expressions of CD4+, CD8+, IL-6 and IFN-β performed every 7 days during the period of 21 to 56 d. The results showed that all treated one-or 7-day-old birds had higher antibody levels than control, and could fence off IBD virus infection. The 7-day-old group showed greater immunity against the diseases, and significantly increased mRNA expressions on CD4+, CD8+, IL-6 and IFN-β over control. It was, therefore, concluded that,by combining vaccinations against ND-IBD on 7-day-old egg-laying chicks,a desirable immunological effect on the chickens could be achieved.

Key words: newcastle disease, infectious bursal disease, inactivated vaccine, antibody detection

CLC Number: 

  • S858.31