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H Manik

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Author-ID : 314175

Agriculture, Biological Sciences & Forestry

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Kualitas Rumput Unggul Tropika Hasil Ensilase dengan Bakteri Asam Laktat dari Ekstrak Rumput Terfermentasi B Santoso; B Tj Hariadi; H Manik; H Abubakar
Media Peternakan Vol. 32 No. 2 (2009): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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The aim of this study was to evaluate the quality of napier grass (Pennisetum purpureum) and king grass (Pennisetum purpureophoides) ensiled with addition of lactic acid bacteria (LAB) prepared from fermented grass extract (LBFG). Four treatments were napier grass without additive (EG), napier grass with 3% (v/w) of LBFG (EGL), king grass without additive (KG) and king grass with 3% (v/w) of BLEF (KGL). Ensiling was conducted in silos of 225 g capacity at room temperatures (approximately 28 °C) for 30 days. Chemical composition of silage, fermentation products and nutrient digestibility were measured. LBFG added silages were higher (P < 0.01) in LAB population but lower in pH value (P < 0.05) compared to silages without LBFG. Dry matter (DM), organic matter (OM), crude protein (CP) and NDF contents of LBFG added silages tended to have higher value than silages without LBFG. Total and individual VFA concentrations in KGL silage were lower (P < 0.05) than KG silage. In vitro DM and OM digestibility and Fleigh point in both silages with LBFG tended to be higher than silages without LBFG. It was concluded that addition of 3% (v/w) of LBFG improved the fermentation quality of napier and king grass silages, as shown by the lower pH value and NH3-N concentration, and the higher LAB population number. Key words: tropical grasses, lactic acid bacteria, silage, fermented grass extract

Silage Quality of King Grass (Pennisetum purpureophoides) Treated with Epiphytic Lactic Acid Bacteria and Tannin of Acacia B Santoso; B Tj Hariadi; H Manik; H Abubakar
Media Peternakan Vol. 34 No. 2 (2011): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

The aim of this study was to evaluate the silage quality of king grass (Pennisetum purpureophoides) treated with addition of epiphytic lactic acid bacteria (LAB) prepared from fermented grass extract (FGE) or combined with tannin of acacia. Experiment was arranged to a completely randomized design with six treatments and three replications. Treatments were (A) king grass without additive as a control; (B) king grass + 3% (v/w) of FGE; (C) king grass + 3% (v/w) of FGE + 10 ml of acacia extract (50 g/100 ml); (D) king grass + 3% of FGE (v/w) + 10 ml of acacia extract (50 g/75 ml); (E) king grass + 3% of FGE (v/w) + 10 ml of acacia extract (50 g/50 ml), and (F) king grass + 3% of FGE (v/w) + 10 ml of acacia extract (50 g/25 ml). About 250 g of silage materials were ensiled in 400 ml bottle silos at room temperatures (approximately 28 °C) for 30 days. Variables measured were characteristics of FGE, fermentation characteristics and chemical composition of silage. Data were analyzed by analysis of variance and the significance differences among means were tested by the Duncan's multiple range test. Results showed that the number of lactic acid bacteria in FGE increased from 0.8 × 107 cfu/ml to 2.9 × 107 cfu/ml after 2 days anaerobic incubation. Concentration of lactic acid in silages with addition of FGE or combined with tannin of acacia (B, C, D, E, and F) were higher (P3-N decreased with increasing concentration of tannin. Butyric acid concentration decreased in silages B, C, D, E, and F as compared to that in silage A. Addition of FGE combined with tannin prepared from acacia leaf improved fermentation quality of king grass silage.

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