Karakteristik Degradasi Tepung Kedelai Terprokteksi Tanin Kondensasi Dari Ekstrak Daun Sengon

This study aimed to determine the effect of protecting soybean meal (SBM) using condensed tannins (CT) extracted from *Albizia falcataria* (sengon) leaves on its ruminal degradation characteristics. A completely randomized design (CRD) was employed with four treatments—P0 (unprotected), P1 (2% CT), P2 (4% CT), and P3 (6% CT)—and six replicates. Degradation was evaluated *in vitro* using the ANKOM Daisy Incubator method at incubation times of 0, 3, 6, 12, and 48 hours. Parameters observed included fraction a, fraction b, the degradation rate of fraction b (c), and total degradation potential (a+b) for dry matter (DM), organic matter (OM), and crude protein (CP). The results showed that protecting SBM with CT significantly (P<0.05) affected the degradation kinetics of DM, OM, and CP. The values ​​for fraction ‘a’, fraction ‘b’, and the degradation rate of fraction ‘b’ (c) for DM, OM, and CP decreased as the level of condensed tannins increased; however, there was no significant effect (P>0.05) on the total degradation (a+b). It is concluded that protecting soybean meal with condensed tannins from *Albizia falcataria* leaf extract effectively reduces nutrient degradation in the rumen, with the 4% CT treatment providing the best protective effect, thereby offering the potential to increase bypass protein available for digestion in the small intestine.