Abstract
This study was conducted to determine the effect of adding chamomile powder to the diet of broilers (Ross308) raised under heat stress conditions on production performance and economic indicators. Unsexed chicks were raised from one day until 42 days. Chicks were randomly distributed at the beginning of second week on experimental treatments with three replications / treatment as follows: T1: Feeding birds with out adding (Control), T2: adding 9 gm chamomile / kg feed , T3: adding: 15 gm chamomile /kg feed. The statistical analysis of data showed: a significant superiority in the final live body weight rate and the total weight gain rate, an improvement in the weekly and total feed conversion, and the superiority of the production index and the productive factor, while we did no find a significant effect showed in feed consumption rate and the percentage of mortality% and in the production yield per m2 in Production of one kilogram of live meat. The result indicated that addition of chamomile lead to improve growth performance and reducing the cost per unit of production in conditions of heat stress.