Judul: Kecernaan Bahan Kering dan Bahan Organik dari Ransum Berbahan Dasar Jerami Padi dengan Kadar Monensin yang Berbeda pada Kerbau Lumpur (Bubalus Bubalis)
Abstrak: Penelitian ini dilakukan di Laboratorium Jurusan Ilmu Nutrisi dan Makanan Ternak Fakultas Peternakan Institut Pertanian Bogor, sejak tanggal 26 Januari satnpai 12 April 1985. Tujuan Penelitian ini adalah untuk meneliti, kadar monensin yang optimum bagi kerbau lumpur (Bubalus bubalis) ditinjau dari kecernaan bahan kering dan bahan organik ransum. Ternak yang digunakan yaitu empat ekor kerbau lumpur jantan yang berurnur 1-2 tahun dengan bobot badan sebesar 210.5 2 8.96 kg. Ransum yang digunakan herbahan dasar jerami padi dengan kadar protein 10.Lt4 persen dan lradar energi 3895 kalori per gram, diberikan monensin dengan kadar yang berbeda yaitu 0 ppm (Ro), 164 Ppln (Ill), 328 ppin (R2), dan 656 ppm (R3).
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Judul: Pengaruh penambahan Mineral Terhadap Konsumsi dan Koefisien Cerna Bahan Organik Protein Kasar, Serat Kasar, BETN Dan Lemak Pada Ransum Yang Menggunakan Jerami Padi
Abstrak: Penelitian ini dilakukan di Bagian Ternak Daging dan Kerja, Fakultas Peternakan, Institut Pertanian Bogor, mu- lai tanggal 5 Februari sampai dengan tanggal 19 April 1982. Tujuan penelitian ini adalah melihat pengaruh penambahan mineral terhadap konsumsi dan koefisien cerna zat-zat makan- an. Dalam penelitian ini digunakan 15 ekor sapi Madura jantan yang berumur + 1 tahun. Rancangan yang digunakan pada penelitian ini adalah rancangan acak kelompok dengan tiga kelompok ternak yang berbeda bobot badannya. Berat masing-masing kelompok adalah, kelompok A (116.9+ 5.4), kelompok B (133+ 6.6) dan kelompok C (147.9 ± 5.47 kg. Kemudian dilanjutkan dengan uji jarak Duncan. Ransum yang digunakan dalam penelitian ini adalah ran- sum dasar yang terdiri dari jerami padi dan konsentrat. Konsentrat terdiri dari dedak, onggok, lemak hewan, urea, lamtoro dan NaCl. Kemudian konsentrat diberi perlakuan : Jerami padi + Konsentrat Ca, S, Cattle mix sebagai berikut: Ransum I Ransum II : Jerami padi Konsentrat + Ca, Cattle mix Ransum III Ransum IV : Jerami padi + Konsentrat + S, Cattle mix : Jerami padi + Konsentrat + Cattle mix Ransum V : Jerami padi + Konsentrat + Ca, S Dari hasil pengolahan secara statistik didapatkan bah- wa konsumsi bahan organik, protein kasar, serat kasar, BETN dan lemak tidak berbeda nyata antar perlakuan. Koefisien cerna semu bahan organik, protein kasar, serat kasar dan BETN tidak menunjukkan perbedaan yang nyata, tetapi koefi- sien cerna semu lemak menunjukkan perbedaan yang sangat nyata (P/0.01).
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Judul: Thermal Characteristics and Dynamics of Tropical Cyclone over Western North Pacific Ocean: A Case Study of Typhoon Songda (Chedeng) 2011
Abstrak: The frequent occasion of Tropical Cyclone (TC) over Western North Pacific (WNP) Ocean lies from 10˚N to 26˚N and 121˚E to 170˚E. Sources of TC development come from warm ocean temperature where latent heat is released during condensation processes and subsequently concentrated in the boundary layer. Relative humidity at 850-700 hPa is responsible to produce the most intense storm. Meanwhile, weak vertical wind shear between 850-200 hPa is one of the dynamical factors that lead to the development of TC. Pressure level of 850-200 hPa is chosen to minimize the thermodynamic effect in the lower troposphere. Typhoon Songda (Chedeng in the Philippines) or TSC lasted from May 18th to 30th, 2011 and strengthened into powerful Super Typhoon stage between May 24th and 27th. Long curving track and the exhibition of all sequences of TC life cycle, TSC is then considered as an ideal case of TC. The objective of the study with case of TSC is to investigate the role of thermal characteristics and dynamics on TC intensity. The research is carried out by using Advanced Research of Weather Research and Forecasting model (WRF ARW model) version 3.3. Two domains are employed in the model. The first domain situate from 02˚N to 40˚N and 118˚E to 149˚E and cover spatial resolution () of 33.1 km. The second domain situate from 09˚N to 27˚N and 119˚E to 132˚E with of 11 km. Timestep of the model () is 120 seconds. The model is supported by the following physical parameterization, i.e., Yonsei University Scheme (YSU) in the boundary layer, Kain-Fritsch scheme (KF) in the cumulus, and WRF Single-Moment 3-class scheme in the microphysics. Initial meteorological condition prior to the formation of the cyclone is generated using WRF ARW standard-release model. Sensitivity of the model output is obtained from a selected single-parameter change scenarios, namely, 10 % to 20 % decrease and increase of wind shear initial data at 850-200 hPa, and by 10 % to 20 % decrease of relative humidity initial data at 850-700 hPa. The result showed that the negative correlations between wind shear and intensity are found in wind shear scenarios. Wind shears of 10 ms-1 which lead to strengthening of the wind intensity in the early period of Typhoon development are found in wind shear scenarios. The effect of wind shear changes on wind intensity is statistically significant in the 20 % wind shear scenarios. During mature stage, weak wind intensity occurred when wind shear increase as given in the WRF standard-release and the 20 % decreasing scenario. Different situation is found in the 20 % increasing scenario where wind shear tend to weak and lead to strong wind intensity at this stage. Meanwhile, the reduction of moisture supply at 850-700 hPa resulting from 20 % decreasing relative humidity play a major role in the weakening of wind intensity and reduces mechanical energy of the cycle process as much as 300 J kg-1.
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