The present study was conducted in two experimentsExperiment I: was conducted to study the effects of using differentlevels of dried neem leaves as feed additive inbroiler rationExperiment 11: was conducted to evaluate the effects of usingpropolis coriander combination as feed additive inbroiler rationBoth experiments were conducted to study their effects on:(1) Growth performance of broiler chickens. (2) Carcass qualitytraits. (3) Economic efficiency (4) some serum analysis asCholesterol, triglyceride, Total protein, total albumin, totalglobulin and glucose(5) Leukogram and histopathological examination.Experiment (DA total of 72 broiler chicks were used to study the effectsdifferent levels of dried neem leaves compared to control.Broiler chickens in this study were allotted into four groups ineach contained 18 birds each group with 3 replicate, with 6 birds ineach one, they were fed on isocaloric and isonitrogenous diets. Feedand water were provided ad-libitum along the duration of the trial.The experiment extended for 6 weeks and the feeding period wasdivided into 3 stages:Starter stage: from 0-14 day in which the birds were fed dietwere plastic (65.4%) and the most affected goats were female(84.6%). While the most affected age were 2-3 years old (39.74 %).Liver, kidney and rumen tissue sample were collected forhistopathological examination which revealed acute cell swellingand lymphocytic aggregation (non specific lesions) in liver andalbuminus casts in some tubules and mild degenerative changes inkidney which also had non specific lesions but there was a defect inthe cornified layer of the rumen.