Vol. 8, Issue 5, Part E (2023)

Author(s): Sourabh Yogi, VN Khune, C Sannat, OP Dinani, AK Santra, N Singh and V Bhagat

Abstract: Immunity is a very important trait in rural poultry. The present experiment was a comparative study of the immune responses of local native chickens (T₁), PB2, a colour broiler (T₂), and crossbreed F₁ (T₃). In the study of cell-mediated immunity that is evoked by PHA-P injection, immunity values in terms of foot index for T₁, T₂, and T₃ were found to be 0.08±.03, 0.10±.02 and 0.11±.01, respectively. In the study of humoral immunity, a 1% sheep RBC solution was injected. After 5 days, the mean HA titres of T₁, T₂, and T₃ were found to be 4.5±0.2, 8.33±1.0 and 8.16±0.4 respectively. A T1 4^th day mean titers of T₁, T₂, and T₃ were found to be 7.0±0.2, 10.16±0.4, and 10.0±0.2 respectively. On the 5^th and 14^th day significantly lower immune response was reported in T₁ Wherease T₂, and T₃ were not differed statistically. At 21th day, mean HA titres of T1, T2 and T3 were found as 5.16±0.6, 5.50±1.0 and 6.33±1.2 respectively.