Judul: Produksi "daging" kambing kacang
Abstrak: Penelitian ini menggunakan data pemotongan kambing kacang di Laboratorium Produksi Ternak Daging dan Kerja di Fakultas Peternakan, Institut Pertanian Bogor. Tujuan penelitian untuk mengukur produksi "daging" kambing kacang jantan baik produksi "daging" total maupun "daging" dari bagian-bagian tubuhnya. Pengolahan data dilakukan dengan menghitung produksi "daging", dinyatakan dalam bobot persen. Dihitung pula produksi "daging" setiap bagian tubuh yang meliputi kepala, karkas, kaki, dan rongga badan.
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Judul: Pertumbuhan-perkembangan bagian-bagian yang dapat di makan pada kambing kacang
Abstrak: Penelitian mengenai pertumbuhan perkembangan bagian-bagian yang dapat dimakan pada kambing Kacang telah dilakukan di Laboratorium Ilmu Produksi Ternak Daging dan Kerja Jurusan Ilmu Produksi Ternak, Fakultas Peternakan Institut Pertanian Bogor, dimulai pada bulan November 1981 sampai Januari 1982. Materi yang digunakan 20 ekor kambing Kacang terdiri atas 10 ekor jantan dan 10 ekor betina yang dibeli dari pedagang kambing dan berasal dari peternakan kambing rakyat. Metoda yang digunakan adalah pemotongan serial berdasarkan kisaran bobot potong 6.1 kg sampai 14.2 kg. Pemisahan karkas menjadi komponen daging, lemak, fascia dan tulang dilakukan setelah karkas kiri dibagi menjadi sembilan bagian berdasarkan standard urat daging Butterfield dan May (1966, dalam Natasasmita, 1978). Demikian pula dilakukan pemisahan komponen-komponen dari kepala, tungkai kaki dan ekor. Koleksi data dilakukan dengan menimbang komponen-komponen tubuh yang diperlukan. Dalam mempelajari pertumbuhan - perkembangan digunakan persamaan Allometrik Ya X atau log Y = log a + blog X seperti yang dikemukakan oleh Huxley (1932). Pe- ubah Y = bobot komponen tubuh yang mengalami pertumbuhan- perkembangan; peubah X = bobot keseluruhan; b= koefi- sien pertumbuhan nisbi dan a intersep regresi. Interpretasi nilai b berdasarkan Natasasmita (1978), selanjutnya untuk melihat perbedaan nilai b atau pengaruh jenis kelamin dilakukan analisa peragam menurut Snedecor dan Cochran (1968). Hasil penelitian menunjukkan bahwa tidak didapatkan pengaruh jenis kelamin pada kecepatan pertumbuhan nisbi Bobot Tubuh Kosong (BTK) terhadap Bobot Potong (BP). Demikian juga untuk hubungan Bobot Yang Dapat Dimakan (BYD) terhadap Bobot Potong dan Bobot Tubuh Kosong. Persentase Bobot Tubuh Kosong perubahannya tidak nyata dengan meningkatnya Bobot Potong. Hal yang sama juga terjadi pada Bobot Yang Dapat Dimakan dimana perubahannya tidak nyata dengan meningkatnya Bobot Potong dan Bobot Tubuh Kosong. ...
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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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