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The main objectives of this work were to investigate the effect of humic acid (natural feed additives), mannan-oligosaccharide (Bio-Mos) compared with zinc bacitracin (antibiotic) on productive and reproductive performance of Inshas hens. At 28 weeks of age two hundred and forty hens of Inshas strain were devided at random into eight equal groups each of three replicates of 10 hens plus 1 cock. The experimental treatments were eight (8) treatments.