The study aimed to determine the effect of propolison productiveperformance, immune response,blood parameters, and bacterial count.A total number of 200 unsexed 7 d old ducklings (Cairina moschata) were divided randomly into four dietary treatment groups, 50 birds each in five equal replicates.The first group was fed a commercial basal diet without supplementation (control), the 2^nd,3^rd and 4^th groups were fed basal diet supplemented with propolis at levels of 150,300,600 mg/kg feed.Growth performance (BW, BWG, FCR), some carcass characteristics and economical efficiency were recorded. At the end of the study (65 d), samplesofblood were collected to determine blood hematological and biochemical constituents. In addition, bacterial counts of the digestive tract contents were measured.Results showed that ducklings fed the basal diet supplemented with different levels of propolis had significantly greater BW, BWG, economical efficiency and better feed conversion as compared to control.
All dietary supplements decreased serum AST, urea , total lipids, cholesterol, LDL and increased T₃, T₄, TAC, GSH, GPX, SOD, glucose, total protein, globulin, γ-globulin, IgA, IgM, IgG, LA, BA, LTT, phagocytic activity, phagocytic index, RBCs and hemoglobin as compared to control. Different levels of propolisincreased dressing percentage and total edible parts compared to control. Moreover, propolis decreased total bacterial count, Salmonella, E.Coli and proteus spp. compared to control group. In conclusion, propolis could be used safely as natural growth promoter to improve growth and immune response of ducklings.