Judul: Penggunaan Lidah Buaya Aloe Vera barbadens  Kering dan Segar sebagai Imbuhan Pakan dan  Pengaruhnya terhadap Aktivitas Enzim serta  Performans Ayam Pedaging
Abstrak: Suatu penelitian telah dilakukan untuk mengetahui pengaruh penambahan gel lidah buaya (Aloe Vera barbadens) kering dan segar sebagai irnbuhan pakan ayam pedaging. Sebanyak 4 ekor ayam umur 5 minggu digunakan untuk melihat respons ayam pedaging terhadap gel lidah buaya segar, sedangkan 180 ekor anak ayam dialokasikan secara acak ke dalam 6 jenis perlakuan, yaitu (1) ransum basal (RB) + 0,25 g gel lidah buaya kering (GLBK)/kg ransum, (2) RB + 0,50 g GLBWkg ransum, (3) RB + 1,O g GLBKkg ransum, (4) RB + 25 g gel lidah buaya segar (GLBS), (5) RB + 50 g GLBSkg ransum dan (6) RB + 100 g GLBSkg ransum.
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Judul: Pengaruh minyak kelapa dan minyak kacang tanah terhadap pertumbuhan ayam pedaging
Abstrak: Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian minyak kelapa dan minyak kacang tanah dalam ransum terhadap pertambahan bobot badan, konsumsi ransum, konversi ransum, konsumsi air minum dan kualitas karkas pada ayam pedaging. Selain itu dilakukan juga pengamatan terhadap mortalitas dan tinjauan ekonomisnya. Dalam penelitian tersebut digunakan 280 ekor anak ayam pedaging umur satu hari, jenis CP 707 "final stock" yang terdiri dari 140 ekor jantan dan 140 ekor betina. Selama penelitian ayam-ayam tersebut dipelihara dalam box beralaskan kawat yang berukuran 1 x 1 x 0,5 m3. Percobaan yang digunakan adalah percobaan Faktorial 2 x7 dengan dasar Rancangan Acak Lengkap. Anak ayam diacak menjadi 28 kelompok, terdiri dari 14 kelompok anak ayam jantan dan 14 kelompok anak ayam betina. Setiap kelompok terdiri dari 10 ekor anak ayam yang merupakan satuan percobaan. Penempatan ayam ke dalam box dilakukan secara acak dari masing-masing jenis kelamin jantan dan betina yang diberi perlakuan sebagai berikut : Perlakuan A, pemberian ransum tanpa minyak; perlakuan B,pemberian ransum dengan satu persen minyak kelapa; perlakuan C, pemberian ransum dengan dua persen minyak kelapa; perlakuan D, pemberian dengan tiga persen minyak kelapa; perlakuan E, pemberian ransum dengan satu persen minyak kacang tanah; perlakuan F, pemberian ransum dengan dua persen minyak kacang tanah; perlakuan G, pemberian ransum dengan tiga persen minyak kacang tanah.
Keyword: Oil palm;, Konversi ransum;, Chicken;, Bogor Agricultural University;

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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