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All Journal Andalasian Livestock
Gusri Yanti
Faculty of Social, Science and Education, Universitas Prima Nusantara Bukittinggi
Agriculture, Biological Sciences & Forestry Chemistry Medicine & Pharmacology Veterinary

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In Vitro Evaluation of Gambier Leaf Extract (Uncaria gambir Roxb.) from Pangkalan, West Sumatra, as a Natural Feed Additive to Improve Nutrient Digestibility in Ruminants Roni Pazla; Mardiati Zain; Antonius; Zaitul Ikhlas; Asmuddin Natsir; Rahmat Hidayat; Nurzainah Ginting; Gusri Yanti; Urip Rosani; Aslizah Mohd-Aris; M. Zhorif Hidayat; Yelly Fitri; Laras Sukma Sucitra; Bella Veliana Utami
Andalasian Livestock Vol. 2 No. 2 (2025): ALive
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/alive.v2.n2.p170-177.2025

Abstract

This study aims to evaluate the effect of supplementing ruminant feed with gambir leaf extract (Uncaria gambir Roxb.) from Pangkalan, West Sumatra, as a natural feed additive on the in vitro digestibility of crude fat, crude fiber, and nitrogen-free extract (NFE). The study used a completely randomized design with four treatments: T0 (control, without extract), T1 (0.5% gambir extract), T2 (1% gambir extract), and T3 (2% gambir extract). The parameters observed included crude fat, crude fiber, and NFE digestibility. The results showed that gambir leaf extract supplementation had a significant effect (P<0.05) on all parameters tested. Treatment T3 provided the highest digestibility values, namely crude fat 66.47%, crude fiber 66.45%, and NFE 67.99%, compared to the control (64.17%, 64.52%, and 65.70%). This increase is thought to be due to the bioactive content of gambir extract, namely tannins (64.84%), catechins (60.11%), and saponins (0.96%), which work synergistically to modulate rumen microbes, protect nutrients from excessive degradation, and increase fermentation efficiency. In conclusion, gambir leaf extract from Pangkalan has the potential to be a natural feed additive that improves nutrient digestibility in ruminants. These results support utilizing local phytochemical-based resources for feed efficiency and sustainable livestock farming.
Co-Authors Antonius Aslizah Mohd-Aris Asmuddin Natsir Bella Veliana Utami Laras Sukma Sucitra M. Zhorif Hidayat Mardiati Zain Nurzainah Ginting Rahmat Hidayat Roni Pazla Urip Rosani Yelly Fitri Zaitul Ikhlas