Judul: Pertumbuhan Alometri dan Tinjauan Histologi Otot Dada pada Ayam Kampung dan Hasil Persilangannya dengan  Ayam Ras Petelur Betina
Abstrak: PEnelitian ini bertujuan untuk mempelajari keragaan alometri potongan tubuh, potongan karkas dan perkembangan serabut otot dada pada ayam kampung dan ayam hasil persilangan antara ayam kampung jantan dengan ayam ras petelur betina strain Lohman. Penelitian ini menggunakan 74 ekor ayam kampung dan 74 ekor ayam hasil persilangan yang dipelihara dengan manajemen yang sama dari umur 2-12 minggu.
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Judul: Kinerja Pertumbuhan dan Fisiologis Ayam Kampung dan Hasil Persilangannya dengan Ayam Ras Tipe Pedaging
Abstrak: Penelitian ini dilakukan di Laboratorium Fakultas Tujuan Peternakan, Institut Pertanian Bogor. Tujuan penelitian adalah untuk mengetahui berapa besar perubahan kinerja pertumbuhan dan fisiologis terutama penggunaan energi dan protein pada ayam kampung dan hasil persilangannya dengan ayam ras tipe pedaging betina sampai umur delapan minggu. Materi penelitian menggunakan 200 ekor ayam yang terdiri dari 100 ekor ayam kampung dan 100 ekor hasil persilangannya dengan ayam ras tipe pedaging. Masing-masing ayam dibagi menjadi lima ulangan dan setiap ulangan terdiri dari 20 ekor ayam. Setiap ulangan ditempatkan pada kandang berbentuk boks berukuran 1 m x 1m x 0.5 m beralas kawat. Ransum yang diberikan adalah ransum jadi dari pabrik Charoen Pokhphan Indonesia, yang terdiri dari ransum "starter" (mengandung protein 24.95% dan energi bruto 19.3 MJ/kg) dan ransum "grower" (mengandung protein kasar 21.93% dengan energi bruto 18.7 MJ/kg). Pakan dan air minum diberikan ad libitum. Data yang diperoleh dianalisa dengan menggunakan uji t "student" (Steel dan Torrie. 1989). Peubah yang diamati terdiri atas pertambahan bobot badan, laju pertum- buhan. konsumsi ransum, konversi ransum, energi termetabo- lisir. retensi energi dan protein. efisiensi penggunaan energi dan protein, laju metabolisme, kebutuhan hidup pokok praktis, berat dan panjang organ pencernaan. dst ...
Keyword: pertumbuhan, fisiologis ayam kampung, ayam ras tipe pedaging

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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