The efficacy of capsulized Croton tiglium L. (CCT) seeds on the gastrointestinal parasites of native chickens (Gallus domesticus) was tested in experiments. A total of thirty-six free-range native chickens naturally infected with gastrointestinal parasites were divided into four treatment groups (positive control of levamisole+niclosamide, 200 mg, 300 mg and 400 mg CCT seeds) following a completely randomized design (CRD). Prior to treatment and on the 3rd, 6th, 9th and 12th days after treatment, the fecal egg count per gram was measured using the mc master technique. The analysis of variance (ANOVA) was used to statistically analyze all the data obtained. Using Least Significant Differences (LSD), significant differences between treatments were compared. On the day twelve after treatment, percent efficacy of capsulized Croton tiglium seeds on Ascaridia galli/Heterakis gallinarum at 200 mg and 400 mg was highly effective. The comparative cost analysis of the four treatments showed that the use of C. tiglium seeds resulted in a lower cost compared to the commercial dewormer. Commercial anthelmintic was more costly compared to the cost of capsulized C. tiglium seeds on T4 (400mg CCT) by 89. 67 %. The findings indicate the ability of Croton tiglium seeds in native chickens (Gallus domesticus) particularly against Ascaridia galli/Heterakis gallinarum as an alternative anthelmintic.
