INFLUENCE OF THYMECTOMY IN THE CHICKEN ON ANTIBODY PRODUCTION AGAINST NEWCASTLE DISEASE AND CHICKEN POX VIRUS
ARMY BIOLOGICAL LABS FREDERICK MD
Pagination or Media Count:
After inoculation and infection with the virus of ND and FP no significant differences were detected between thymectomized and non- thymectomized chickens with respect to the reaction to vaccination, formation of humoral antibodies, degree of immunity, disease pattern and mortality. In the thymectomized chickens infected with FP the number of positive precipitation tests, particularly in the vaccinated birds, was somewhat less than in the control birds and that 15 weeks after vaccination with Hitchner B1 ND virus the neutralization and HI titers were also lower in the thymectomized birds.
- Animal Husbandry and Veterinary Medicine