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: Studi Metabolisme Energi dan Protein pada Ayam Kampung dan Hasil Persilangannya dengan Ayam Ras Pedaging pada Periode Pertumbuhan
Abstrak: Penelitian dengan tujuan mempelajari metabolisme energi dan protein telah dilakukan pada ayam kampung dan turunan pertama (F1) hasil persilangan ayam kampung jantan dengan ayam ras pedaging betina pada periode pertumbuhan. Percobaan biologis dilaksanakan di Laboratorium llmu Produksi Ternak Unggas Fapet IPB selama 8 (delapan) minggu, yaitu dari 5 Oktober hingga 30 Nopember 1996, menggunakan 39 ekor ayam kampung dan 39 ekor ayam (F1) hasil persilangan (ayam kampung jantan x ayam ras pedaging betina). Semua ayam percobaan berjenis kelamin betina dengan umur sama (10 minggu) namun berbeda dalam bobot badan yaitu untuk ayam kampung 727.7 ± 123.4 gram dan ayam silang 1363.1 ± 99.9 gram. lndikator produksi yang diamati adalah konsumsi ransum, pertumbuhan dan efisiensi konversi ransum. lndikator fisiologis adalah retensi nitrogen yang ditentukan dengan neraca gizi, retensi protein, lemak dan energi dalam tubuh didekati dari hasil analisis komposisi tubuh, dan produksi panas (tahap puasa dan tahap diberi makan) diukur secara tidak langsung dengan metode kalorimetri, yaitu dengan mengukur konsumsi oksigen ayam percobaan menggunakan satu unit chamber respirasi sistem tertutup. Semua ayam percobaan diberi ransum komersial ayam ras petelur fase dara, produksi PT Gold Coin (kode 104C) dengan komposisi nutrisi teranalisis 14.81% protein, 7.60% lemak, 7.89% serat kasar, 12.10% abu, 1.99% calcium, 0.99% fosfor dan energi bruto 4063.10 kkal/kg. Bentuk fisik ransum adalah butiran pecah ("crumble'). Ransum dan air minum disediakan ad libitum. Energi metabolis ransum ditentukan dengan menggunakan indikator ("Celite 545') yang dicampurkan ke dalam ransum sebanyak 1%. Koleksi ekskreta dilakukan pada minggu percobaan ke dua, lima dan delapan terhadap kedua jenis ayam. Terhadap sampel ekskreta dan ransum dilakukan analisis komposisi nutrisi (kadar air, nitrogen dan energi bruto) dan kadar senyawa celit. dst ...
Keyword: Ayam kampung, laylands

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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