Ginger roots used as a feed additive in laying hens diets, in a single or different doses, with or without another organic additives and for different durations. To assess the effect of single dose of dried ginger roots powder, individually or with citric acid and dried instant yeast on laying, reproductive performance and cellular immunity of adult Japanese quails, 72 sexed Japanese quails 6 weeks old were randomly allotted into 4 treatments with 3 replicates each (1 male with 5 females) in wire cages, (G1) supplemented with 1.5g ginger/kg diet; (G2) 1.5g ginger with 3g citric acid/kg, (G3) 1.5 ginger plus 3g dried yeast/kg diet, all in comparison with (G4) control plane, non-antibiotic treated diet, lasted for 6 weeks, from 8th -14th week of age (2weeks adaptation period). All laying hens had similar body weight, laying rate %, total egg mass, AV. Egg No. /W, AV daily and weekly feed intake and intestinal pH, with numerical non-statistical improvement in treated diets when compared to G1. Significant improvement (P < 0.05) were in egg weight, FCR, protein conversion ratio especially G2 and G3 in comparison to G1 and G4. Hatchability and fertility were significantly improved by G1 and G3. In conclusion, data analysis showed that, ginger plus organic acid or probiotic improved the nutritional, immune and productive parameters of laying Japanese quail.
