Souad, A.F., Zakaria, H. and Tabbaa, M.J. 2023. Effect of Different Levels of Origanum Majorana Leaves Powder on Performance and Carcass Characteristics of Broiler Chickens. Jordan Journal of Agricultural Sciences. 19, 2 (Jun. 2023), 167–179. DOI:https://doi.org/10.35516/jjas.v19i2.141.