Judul: Pengaruh Suplementasi Probiotik Starbio dalam Ransum yang Mengandung Isi Rumen Terhadap Persentase Karkas dan Organ dalam Ayam Broiler.
Abstrak: Penelitian ini dilaksanakan di Laboratorium Lapang Nutrisi Ternak Unggas, Fakultas Peternakan Institut Pertanian Bogor dan bulan Maret sampai Mei 2000. Penelitian ini menggunakan 36 ekor ayam broiler strain Hybro (PT. Cimanggis Bogor) dan 108 ekor yang sebelumnya telah dipelihara selama 6 minggu. Bahan pakan yang digunakan dalam menyusun ransum adalah jagung kuning, dedak padi, bungkil kedelai, tepung ikan, isi rumen, starbio, kapur, minyak kelapa dan suryamix. Isi rumen sebelum dicampur dalam ransum dikeringkan dibawah sinar matahari setelah kering digiling. Ransum yang digunakan dalam penelitian terdiri dari 2 perlakuan dosis starbio yakni 0% dan 0,05% dan 3 perlakuan isi rumen yakni 0%, 10% dan 20%. Ransum menganduug protein sebesar 21% dengan energi metabolis ransum 2900 kkal/kg.
Keyword: 

Judul: Pengaruh suplementasi probiotik starbio dalam ransum yang mengandung isi rumen terhadap performans ayam broiler
Abstrak: Penelitian ini dilaksanakan di Laboratorium Lapang Ilmu Nutrisi Unggas Jurusan Ilmu Nutrisi dan Makanan Ternak dengan tujuan untuk mengetahui pengaruh pemberian isi rumen dalam ransum broiler yang disuplementasi dengan probiotik Starbio terhadap konsumsi ransum, pertambahan bobot badan, konversi ransum, bobot badan akhir, mortalitas dan Income Over Feed and Chick Cost. Ternak yang digunakan dalam penelitian ini adalah ayam broiler strain Hybro sebanyak 108 ekor. Ayam-ayam tersebut ditempatkan dalam kandang beralaskan litter dan dipelihara selama 6 minggu. Setiap kandang terdiri atas enam ekor ayam broiler. Ransum yang digunakan terdiri dari enam macam yaitu ransum tanpa isi rumen dan probiotik (T1S1), ransum dengan 10% isi rumen (T2S1), ransum dengan isi rumen 20% (T3S1), ransum dengan 0,05% probiotik Starbio® (T1S2), ransum dengan 10% isi dengan penambahan 0,05% probiotik Starbio (T2S2) dan rumen ransum dengan 20% isi rumen dengan penambahan 0,05% probiotik Starbio. Ransum disusun iso kalori dan isoprotein (2900 kkal EM/kg dan 21,7% protein) berdasarkan rekomendasi Scott et al. (1982). Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap Pola Faktorial 3 X 2 dengan 3 ulangan. Analisis Ragam (ANOVA) digunakan untuk mengetahui pengaruh perlakuan terhadap peubah yang diamati, selanjutnya jika berbeda nyata dilakukan Uji Duncan untuk melihat pengaruh antar perlakuan (Steel dan Torrie, 1991). Hasil analisis sidik ragam menunjukkan bahwa interaksi penggunaan tepung isi rumen dan probiotik Starbio berpengaruh nyata (P<0,05) terhadap pertambahan bobot badan dan bobot badan akhir dan konversi ransum tetapi tidak berpengaruh nyata terhadap konsumsi ransum. Mortalitas yang terjadi selama penelitian adalah 8,33 persen akibat stress dan penyakit Colibacillosis.
Keyword: 

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.
Keyword: