Increase of Antibody Titer against Leucocytozoon caulleryi by Oral Administration of Recombinant R7 Antigen

Akira ITO, Tohru GOTANDA, Shigeki KOBAYASHI, Katsumi KUME, Chihiro SUGIMOTO, Takeshi MATSUMURA
2005 Journal of Veterinary Medical Science  
In this study, we examined oral administration with recombinant R7 (rR7) antigen expressed in Escherichia coli using chicken leucocytozoonosis subunit vaccine (LV)-vaccinated and unvaccinated chickens. Only LV-vaccinated chickens showed re-induction of anti-second-generation schizont (2GS) antibody. Also, LV-vaccinated chickens whose anti-2GS antibody titer was middle-level showed increases of the antibody titer compared to vaccinated-control chickens (P>0.01, >0.05) after oral administration
more » ... th rR7 antigen. KEY WORDS: Leucocytozoon caulleryi, oral administration, recombinant R7 antigen.
doi:10.1292/jvms.67.211 pmid:15750322 fatcat:jkpe2seqq5bi3mhte3wbsvrn3e