الفهرس 
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Abstract
In the present study , dealing with using Megalo as immunomodulator with vaccination program in poultry was tested where three group of chicks were treated as flow:group A : Was giving Megalo in ration and vaccinated with both ND and IBD viral vaccin Group B: was giving ration only and vaccinated with the same program of vaccination of group A.Group C: was giving ration only and remain without vaccination as control group.