Judul: Penggunaan lemak sapi sebagai sumber energi pengganti jagung pada ransum babi
Abstrak: enelitian telah dilakukan di Stasiun Penelitian Fakultas Peternakan, Universitas Udayana di Denpasar Bali untuk 1nenge·tahui pengaruh penggantian sebagian energi jagung dengan energi lemak sapi terhadap pertumbuhan, kecernaan ransum dan persentase karkas babi. Penelitian menggunakan Rancangan Acak Lengkap dengan empat perlakuan dan empat ulangan. perlakuan yang dicobakan adalah : Adapun perlakuan-Perlakuan A - Perlakuan B - Perlakuan C - Perlakuan D ransum tanpa lemak sapi. ransum dengan lemak sapi sebagai pengganti 25 % energi jagung. ransum dengan lemak sapi sebagai pengganti 50 % energi jagung. ransum dengan lemak sapi sebagai pengganti 75 % energi jagung ...
Keyword: Fat, Energy, Maize;

Judul: Pengaruh sumber energi yang berbeda dalam ransum ternak babi periode pengakhiran terhadap daya cerna zat makanan dan angka yod lemak karkas
Abstrak: Penelitian ini telah dilakukan di Kandang Laboratorium Ilmu Produksi Ternak Babi, Fakultas Peternakan, Institut Pertanian Bogor, mulai 1 Mei 1992 sampai 14 Juli 1992. Tujuan penelitian ini adalah untuk mengetahui sampai tingkat mana penggunaan sumber-sumber energi pengganti jagung dapat digunakan tanpa mempengaruhi performans, konsumsi, konversi, kecernaan bahan kering, kecernaan bahan organik serta angka yod lemak karkas. Materi yang digunakan adalah 28 ekor babi periode bertumbuh pengakhiran yang diberi 7 perlakuan makanan yang berbeda. Ransum A sumber energi utama berasal dari jagung 40%; Ransum B dedak 40%; Ransum C dedak 50%; Ransum D pollard 40%; Ransum E pollard 50%; Ransum F bihun 40%; Ransum G bihun 50%. Rancangan yang digunakan adalah Rancangan Acak Lengkap (RAL) (Steel and Torrie, 1980), dengan tujuh perlakuan dan empat ulangan Data dianalisa dengan analisis ragam dan menggunakan Uji Banding Least Significant Difference (LSD) untuk membandingkan nilai rataan perlakuan. Hasil penelitian menunjukkan penggunaan jenis sumber energi yang berbeda (dedak 40 dan 50%, pollard 40 dan 50% serta bihun afkir 40 dan 50%) berpengaruh nyata (P<0,05) terhadap pertambahan bobot badan dan berpengaruh sangat nyata (P<0,01) terhadap kecernaan bahan kering dan kecernaan bahan organik (P<0.01), sedangkan terhadap konsumsi, konversi, angka yod lemak karkas bagian sub kutan dan abdominal tidak berpengaruh nyata. Diantara ketiga bahan pengganti jagung (dedak, pollard dan bihun afkir), maka bihun afkir yang terbaik dan jika dipergunakan 40% dalam ransum sebagai sumber energi utama akan secara nyata (P<0.01) meningkatkan pertambahan bobot badan dan berpengaruh sangat nyata (P<0,01) terhadap koefisien cerna bahan kering dan koefisien cerna bahan organik....
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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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