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Pengaruh Penambahan Biovet dalam Ransum dengan Berbagai Kandungan Protein-Energi terhadap Pertumbuhan Anak Kelinci Rex D Aritonang; B Tj Hariadi; Y C Raharjo
Media Peternakan Vol. 27 No. 2 (2004): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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An experiment was conducted to study the effect of Biovet supplement in diets of different protein-energy to weight gain of Rex rabbit kit. The experiment used 112 kit of 28 Rex Rabbits at PT Fiva Bandung Rabitry, Pangkalan village, Sub districk Gambung-Ciwidey District Bandung in Completely Randomized Design 7 treatments and 4 replications. The treatments were: R0: 18% CP and 2750 kcal/kg; DE R1: 16% CP, 2500 kcal/kg DE + 0% Biovet; R2: 16% CP, 2500 kcal/kg DE + 0,1% Biovet; R3: 16% CP, 2500 kcal/kg DE + 0,5% Biovet; R4: 14% CP, 2400 kcal/kg DE + 0% Biovet; R5: 14% CP, 2400 kcal/kg DE + 0,1% Biovet; and R6: 14% CP, 2400 kcal/kg DE + 0,5 % Biovet. Results showed that body weight gain, feed consumption, and conversion were similar to rabbits given biovet supplement in low quality diet. Key words: rabbit, biovet, protein-energy

Pengaruh Suplementasi Acacia mangium Willd pada Pennisetum purpureum terhadap Karakteristik Fermentasi dan Produksi Gas Metana in Vitro B Santoso; B Tj Hariadi
Media Peternakan Vol. 30 No. 2 (2007): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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An in vitro study was conducted to determine the effect of Acacia mangium Willd supplementation to Pennisetum purpureum on fermentation characteristics, protozoal numbers, nutrients degradability and in vitro methane production. Treatments consisted of four composite substrates with P. purpureum and A. mangium Willd ratios at 100:0 (0%), 85:15 (15%), 70:30 (30%), and 55:45 (45%). Crude saponin and total tannin contents of A. mangium were 1.67% and 4.51%, respectively. Methane and gas productions decreased linearly (P < 0.01) in response to acacia levels. Addition of A. mangium at 15%, 30% and 45% decreased CH4 production by 16.2%, 26.8% and 61.1%, respectively as compared to the control. There were linear decreases in total VFA and acetate concentrations (P < 0.01), and propionate production (P < 0.05) in response to increase in acacia addition. Total protozoal populations increased linearly (P < 0.05) with added acacia. In vitro dry matter and organic matter degradabilities of substrate decreased linearly (P < 0.01) with acacia addition. It is concluded that methane production is not essentially associated with protozoal population. A. mangium has a potential use for mitigation of enteric methane production. Key words : Acacia mangium, methan, degradability, in vitro

Komposisi Kimia, Degradasi Nutrien dan Produksi Gas Metana in Vitro Rumput Tropik yang Diawetkan dengan Metode Silase dan Hay B Santoso; B Tj Hariadi
Media Peternakan Vol. 31 No. 2 (2008): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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Six grass species (Pennisetum purpureum, Pennisetum purpureophoides, Sorghum sudanense, Brachiaria brizantha, Imperata cylindrica, and Panicum maximum) were harvested at 49 days and preserved as silage or as hay. Samples of silage and hay were evaluated by an in vitro gas production and in vitro nutrient degradability. Total gas production at 24 and 48 h as well as CH4 were higher (P < 0.01) in silage than in hay. Brachiaria brizantha had the highest (P < 0.01) gas production compared to other species, whereas P. purpureum had the highest CH4 production (mM/g organic matter degraded). Dry matter (DM) and organic matter (OM) degradations were higher (P < 0.01) in silage than hay. When compared with hay, silage had higher (P < 0.01) ammonia-N concentration (20.3 vs. 10.6 mg/100 ml) and higher (P < 0.05) butyric acid concentration (7.9 vs. 7.0 mM). Non-fiber carbohydrate (NFC) and crude protein contents were positively correlated with gas production (r = 0.51; P < 0.05) and CH4 production (r = 0.64; P < 0.01) at 48 h of in vitro incubation. However total gas and CH4 productions were negatively correlated with neutral detergent fiber (NDF) content. There were positive correlation between DM (r = 0.90; P < 0.01), OM (r = 0.93; P < 0.01), and NDF (r = 0.84; P < 0.01) degradations and gas production. Key words: tropical grasses, methane, silage, hay

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.

Fermentation Characteristics of Rice Crop Residue-Based Silage Treated by Epiphytic and Commercial LAB B Santoso; B Tj Hariadi; . Alimuddin; D Y Seseray
Media Peternakan Vol. 35 No. 1 (2012): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

Two experiments were conducted to investigate the effects of addition of lactic acid bacteria (LAB) inoculant from king grass and a commercial inoculant of L. plantarum on fermentation characteristics and nutrient digestibility of rice crop residue-based silage. In experiment 1, mixture of rice crop residue (RC), soybean curd residue (SC) and cassava waste (CW) in a 80 : 10 : 10 (on dry matter basis) ratio was used as silage material. Four treatments silage were (A) RC + SC + CW as a control; (B) RC + SC + CW + LAB inoculant from king grass (2%, v/w) ; (C) RC + SC + CW + LAB inoculant from king grass (3%, v/w); (D) RC + SC + CW + L. plantarum inoculant (2%, v/w). In experiment 2, six Kacang goats were used in a 6 × 3 Youden square experiment and fed elephant grass, rice straw, and rice crop residue-based silage. The results showed that crude protein (CP) content in silages B, C, and D was slightly higher than silage A. Lactic acid concentration was significantly higher (PL. plantarum inoculant.

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