It is widely known empirical use of plants as health workers in many world cultures, knowl-edge is transmitted from generation to generation. Currently, medicinal plants and extracts are used for therapeutic drug introduced as an alternative, as treatments for various dis-eases in both humans and animals. Ethnomedicine in some regions of Latin America, Paice (Chenopodium ambrosioides) has been used in infusion of leaves and flowers as a carminative and digestive systems, but mainly as an anthelmintic. Therefore, this study was to evaluate the effect paico parasite extract (Chenopodium ambrosioides) in fighting cocks (Gallus domesticus) in a nursery for the city of Tunja, Boyacá, since the owners of these birds use it the traditional way as natural dewormer; for work were used 45 fighting cocks, organized into 3 groups of 15 birds each, which every 15 days for a month were administered 0.1 ml / kg paico extract orally (group T2), a commercial drug 0.5ml/Kg based on levamisole-ivermectin (group T3) and 0.5ml/ bird of water (control group T1); samples were collected feces samples in order to determine the presence of eggs and / or larvae of parasites using the formolether technique, during the study were identified different species of Ascaridia spp, Heterakis gallinarum, Eimeria sp, eggs and larvae of Trichostrongylus. After the administration of extract treatment was revealed only paico Ascaridia galli eggs, Heterakis gallinarum, Eimeria sp, and in providing the last dose were identified himself only Ascaridia galli eggs and Eimeria sp, which corroborates the possible effect and the efficacy of doses given paico extract as alternative pest control treatment for this type of birds in this study.