Question
Newcastle disease/Ranikhet disease (RD) is a highly
contagious and most lethal viral disease of poultry. Which Institute had discovered the vaccine for Ranikhet disease?Solution
ICAR-IVRI, Izatnagar produced R2B strain vaccine since 1940 and F strain vaccine since 1953. The immunity produced by RD F vaccine lasts for about 15 weeks. Chicks should be revaccinated with the RD R2B vaccine between 8-10 weeks after primary vaccination.
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