The Study of Chemical Composition and Condensed Tannin Content in Forage Plants
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Abstract
The objective of this study was to determine the nutrient value, chemical composition, and condensed tannin content in 11 forage species, including Brachiaria subquadripara (Trin), Thysanostigma siamensis J.B. Imla Mmelina bengalensis, Paspalum conjugatum Berg, Oil palm frond, Leucaena leucocephala leaves , coffee leaves, banana leaves, Acacia mangium leaves, mulberry leaves and Azadirachta indica A. Juss. var. The result shows that the chemical composition on a dry matter basis (% DM) varied significantly among species (p<0.01). The highest crude protein content was found in Leucaena leucocephala leaves (27.95%), followed by coffee leaves (24.93%), Azadirachta indica A. Juss. var leaves (18.18%), mulberry leaves (17.31%), Ommelina bengalensis L. (15.00%), Leucaena leucocephala (Tephrosia) leaves (14.04%), Paspalum scrobiculatum (10.93%), banana leaves (9.09%), and oil palm frond (5.80%), respectively. Oil palm leaves exhibited the highest levels of neutral detergent fiber (NDF) and lignocellulose at 70.51% and 60.15%, respectively. The chemical composition of NDF and acid detergent fiber (ADF) and acid detergent lignin (ADL) contents of these forages were within ranges suitable for ruminant utilization. The condensed tannin content varied significantly among the various roughage samples (p<0.01). The highest amount of condensed tannins was found in banana leaves (5.59 g/kg DM), followed by Brachiaria subquadripara (Trin) (4.46 g/kg DM), Paspalum conjugatum Berg (3.66 g/kg DM), mulberry leaves (3.56 g/kg DM), Thysanostigma siamensis J.B. Imla (3.27 g/kg DM), oil palm frond (3.17 g/kg DM), neem leaves (2.93 g/kg DM), coffee leaves (2.42 g/kg DM), Thysanostigma siamensis J.B. Imla (2.11 g/kg DM), Acacia mangium leaves (1.62 g/kg DM), and Leucaena leucocephala (1.33 g/kg DM), respectively.
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