Dietary Swietenia mahagoni as Tannin Source to Increase in-vitro Nutrients Digestibility

Swietenia mahagoni is commonly used in ruminants and a source of condensed tannin (CT) with the potential to improve feed utilization. This study aimed to determine the effect of Swietenia mahagoni as a tannin source on in-vitro rumen fermentation, rumen hydrolytic enzyme activity, and nutrients digestibility. The levels of tannin were 0, 3, and 6. Feed fermentation was conducted using gas production Menke and Steingass and two steps Tilley and Terry in-vitro digestibility technique for 96 h. Data obtained were analyzed using one-way ANOVA and continued by DMRT. The dietary 6 tannin was able to reduce (P < 0.05) pH, ammonia (NH3) production, microbial protein, and protozoa populations but did not affect the production of volatile fatty acids (VFA). The activity of β-Glucosidase, carboxymethyl cellulose (CMC-ase), amylase, and protease was decreased linearly with tannin concentrations (P < 0.05). Rumen digestibility of crude protein (CP), organic matter (OM), and dry matter (DM) decreased by treatment (P < 0.05). DM and protein digestibility in post rumen increased linearly with tannin treatments (P < 0.05), while OM digestibility increased by 6 of tannin level. Dietary of Swietenia mahagoni as a tannin source may be a potential way to improve nutrients utilization in ruminants © 2021. Basri et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited