The present study was conducted to investigate the effect of adding various levels of Optifeed®, VêO® premium and Oleobiotec® to the diets as appetite stimulants in the production Performance of broiler males under heat stress conditions. The experiment was done for 42 days for the period from 30 August 2018 to 11 of October 2018 at the Poultry Research Station of the Livestock Research Department / Agricultural Research Department / Ministry of Agriculture (Baghdad - Abu Ghraib). In this study, 270 - one-day broiler males (Ross 308) were reared with the mean body weight of 37 g/chick, distributed randomly on 18 pens with dimensions of 2 x 3 m (length x width). The experimental treatments involved six treatments with three replicates for each treatment (per replicate 15 chicks). The treatments were included T1: basal diet as a control with no additions, T2: basal diet + 500 g/ton of Optifeed®, T3: basal diet + 250 g/ton of VêO® premium, T4: basal diet + 250 g/ton of Oleobiotec®, T5: basal diet + 250 g of Optifeed® + 125 g of VêO® premium + 125 g of oleobiotec® /ton of feed, T6: basal diet + 500 g Optifeed® + 250 g VêO® premium + 250 g Oleobiotec® g/ton of feed. The obtained results showed that the supplemented treatments significantly (p ≤ 0.05) increased the performance characteristics Cumulative (1-42) day, especially the fifth treatment T5 compared with the control treatment, in both live body weight, body weight gain, relative growth rate, feed consumption, The cumulative feed ratio, the production index, and the economic index.
