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Fayoumi chicks were vaccinated with fowl pox virus vaccine and pigeon pox virus vaccine. The protective potentiality of the two vaccines was compared in field condition in Bangladesh. The percentage of ‘take reaction’ was assessed to conclude its relationship with better immune response and recorded 93.33% and 100% in birds of group B and group C, respectively. The mean passive hemagglutination (PHA) antibody titre after primary vaccination was 32±14.81 in group B and 33±13.66 in group C. Following booster vaccination, the mean PHA titres level at pre challenge of group B was 46.93±16.52 and 55.46±14.64 in group C. The PHA titre of group B and C at two weeks post challenge recorded 93.86±33.04 and 110.93±29.29, respectively. PHA titre significantly (P0.01) increased after vaccination and post challenge compared to pre- vaccination titre. There was significant variation (p0.01) of PHA titre at pre challenge in these groups using different vaccine combinations, but all the vaccinated birds resisted challenge infection.

Vaccination Studies against Fowl Pox in Chickens