Author(s):

Rahul Singh Tomar, RPS Baghel, S Nayak, Ankur Khare and Pramod Sharma

Abstract: This study was carried out to see the immunomodulatory effect of varying levels of Withania somnifera (ashwagandha), Boerhaavia diffusa (punarnava) and Emblica officinalis (amla) powders in broilers. Two thirty four day old chicks were randomly distributed into 10 dietary treatments each having 3 replicates of six chicks. Out of 10 dietary treatments, treatment one (T₁) acted as control, remaining 9 treatments were formulated by supplementing various herbal powders (ashwagandha, punarnava and amla) in varied levels (0.5, 1.0 and 1.5%) to T₁. Thus, T₂, T₃ and T₄ were supplemented with ashwagandha powder, T₅, T₆ and T₇ were supplemented with punarnava powder and T₈, T₉, and T₁₀ diets had amla powder, respectively. Thus, T₂ group produced significantly higher (p<0.05) weight of lymphoid organs. HI titre was found to increase with the increase in the level of ashwagandha powder (T₃) except at T₄. Cell mediated immunity (CMI) in terms of skin thickness increased in T₂. In Punarnava powder, T₇ group produced higher weight of lymphoid organs. CMI response on 15^th day of challenge, after 24 hrs. Showed lower thickness in T₇ group. Thus, up to 1.0% level of punarnava powder (T₆) immune system was more active. T₈ (0.5% amla powder) group produced maximum weight of lymphoid organs and the mean value of HI titre was found higher in amla supplemented groups. CMI response when challenged with sensitization on 15^th day, after 24hrs. Indicated no significant difference (p<0.05) in the skin thickness.

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