This work was conducted to study the effect of sun dried tomato pomace (SDTP) with or without enzymes supplementation economic efficiency of Japanese quail. A total number of 306 sevendays-old quail chicks were used. The quail chicks were randomly allocated into 6 groups (51 unsexed chicks per group). Group 1 was fed on the basal diet (BD) without enzymes supplementation (control), quail chicks of group 2 were fed on the BD containing AveMix® 02 CS enzyme 0.02g/kg diet. While quail chicks of group 3 were fed BD containing 2.5% DTP). Group 4 received BD containing with 2.5% SDTP with Ave Mix® 02 CS enzyme. Group 5 received BD containing 5% SDTP. Group 6 received BD containing 5% SDTP with Ave Mix® 02 CS enzyme. Our results clarified that, the increasing (5%) SDTP to diet resulted in an increase of final weight by 29.36%. Also, increasing body weight resulted in an increase of total cost by 0.55% in case of 2.5% SDTP group.

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This study was conducted to evaluate the effect of different feed additives (Probiotics, Prebiotics, Synbiotics, Organic acids and Enzymes) on chicks' immunity (Antibody titer against Newcastle vaccine, differential leukocyte count, total proteins, albumin and globulin value) and economic efficiency analysis by using production functions under summer condition. Our results showed that, enzyme treated group recorded the highest value of white blood cells. Organic acids treated group for Ross breed showed the highest value for lymphocyte percentage. Heterophils percentage value was the highest for probiotics and synbiotics treated group. Concerning antibody titer to vaccination against Newcastle, we found that all the experimental groups had a positive effect on antibody titer. Regarding, albumin value, it was the highest for probiotic treated group, while globulin value for Cobb breed showed higher value for all treated groups in comparison to control group except for probiotic treated group. Regarding the effect of these additives on body weight and total return, we found positive relationship between feed additives and body weight and total return. On the basis of our results, it would be concluded that probiotics, prebiotic, synbiotic, organic acids and enzymes had positive effect on immunity and economic performance of broiler chicken.

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