Abstract: The purpose of this study is to explore the potential uses of Z. officinale and propolis extracts as growth promoters in broilers. One-day-old, Ross 308 male broiler chicks were used in the experiment. At the beginning of the experiment, seven treatment groups [negative control, positive control, Z. officinale, propolis and three different combinations of Z. officinale+propolis (0.5+0.5, 1+1 and 1.5+1.5)] were used as treatment groups of similar body weight, consisting of 15 birds each. Groups were subjected to ad libitum feeding for 42 days. The feed was supplemented with the combination of Z. officinale and propolis extracts, which proved to improve live body weight gain, feed consumption, feed conversion efficiency and efficiency index as well as weight and length of the digestive system in broiler chicks. The groups receiving 240 ppm Z. officinale or 1000 ppm propolis extracts have particularly performed similar to the group fed antibiotic growth promoter. The amount of 240 ppm Z. officinale or 1000 ppm propolis extracts had similar plasma cholesterol, glucose and triglycerids levels to those of antibiotic.