International Journal of Life Sciences Available online at www.sciencescholar.us Vol. 4 No. 1 April 2020, pages: 19-25 e-ISSN: 2550-6986, p-ISSN: 2550-6994 https://doi.org/10.29332/ijls.v4n1.373 19 The Effect of Giving Betel Leaf Extract (Piper Betel L.) on the Production and Quality of Broiler Carcasses Ermelia Maria F. R. Lodang a , Gusti Ayu Mayani Kristina Dewi b , I Made Nuriyasa c Manuscript submitted: 27 November 2019 Manuscript revised: 09 December 2019, Accepted for publication: 18 January 2020 Corresponding Author c Abstract This study aims to learn the effect of giving betel leaf extract (Piper Betel L.) on the production and quality of broiler carcasses. The experiment design used Completely Randomized Design (CRD) with three treatments and ten replicates, with two broiler aged 2 weeks. The treatments were broiler chicken given drinking water without of betel leaf extract as control (A), broiler gave 2% extract of betel leaf water through drinking water (B), and broiler gave a 4% extract of betel leaf water through drinking water (C). The variables observed in this study were performance, digestibility of nutrients, total stool bacteria. The results showed that the granting extract of betel leaf through drinking water showed no significantly different (P>0,05) on ration consumption, drinking water consumption, body weight gain, Feed Conversion Ratio (FCR), body initial weight, final weight, percentage carcass, percentage meat, percentage fat and skin, bone weight, meat born to, digestibility of dry matter, digestibility of protein and digestibility of energy but significant difference (P< 0.05) of carcass weight, Total Plate Count (TPC), coliform, and E.Coly. It can be concluded that the granting extract of betel leaf water of level 4% can increase carcass weight and reduce the number of broiler gastrointestinal bacteria. Keywords bacteria; betel leaf; broiler; digestibility; performances; International Journal of Life Sciences © 2020. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/). Contents Abstract ............................................................................................................................................................................................................ 19 1 Introduction ............................................................................................................................................................................................ 20 2 Materials and Methods ...................................................................................................................................................................... 20 3 Results and Discussions .................................................................................................................................................................... 21 4 Conclusion ............................................................................................................................................................................................... 23 Acknowledgments................................................................................................................................................................................ 23 a Udayana University, Denpasar, Indonesia b Udayana University, Denpasar, Indonesia c Udayana University, Denpasar, Indonesia