Figure 5.

NDV and IBDV specific serum antibody responses in the experimental chickens. (A) HI assay was carried out 14 and 28 days post-immunization. All HI titers are expressed as mean reciprocal log2 titre ± SEM (standard error of the mean) (n = 10). Statistical differences were calculated by one-way ANOVA with p < 0.01 and Waller-Duncan as post-hoc test. The antibody titers as determined on 14, 21 and 28 days post-immunization by ELISA, (B) higher than 500 were considered positive for IBDV antibody and (C) higher than 200 were considered positive for NDV. Data represent the mean ± standard error. Statistical analysis was done by one-way ANOVA (p < 0.01 and Waller-Duncan as post-hoc test. Level not connected by same letter are significantly different (p < 0.01).