The aim of Our study to determine the effect of using propolis and Immulant® as immunomodulators against Live Newcastle disease virus vaccination on broiler chickens.
One-day-old broiler Cupp chicks were randomly divided into four groups (30 chicks /group).Group A was not treated with any immunomodulators and used as control,while groups B,C and D were supplemented with propolis in diet,propolis in water,Immulant®(Echinacea dry extract & nigella sativa) in water,respectively.Birds of group B had the highest mean antibody titers against live ND vaccination at 21,28,35 and 42 days of experiment in contrast to non-treated group A which had low levels of immune response, while birds of group C had the heaviest body weight,followed by group B and D in comparison to the birds of group A. Thus,supplementing immunomodulators as Propolis in diet had a significant positive effect on immune response against live ND vaccination in broiler chickens as well as gain in body weight.