Judul: Profil Darah, Persentase Bobot Karkas dan Organ Dalam Ayam Broiler yang Diberi Jus Silase Jagung
Abstrak: Penelitian ini bertujuan untuk menganalisis pengaruh pemberian jus silase jagung terhadap profil darah, persentase bobot karkas dan organ dalam ayam broiler. Dua ratus DOC dibagi kedalam 4 perlakuan yaitu R0 (Ransum kontrol + air minum kontrol), R1 (Ransum mengandung 0.01% zinc bacitracin + air minum kontrol), R2 (Ransum kontrol + 0.2% jus silase dalam air minum), dan R3 (Ransum kontrol + 0.4% jus silase dalam air minum). Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL) yang terdiri atas 5 ulangan. Analisis data dilakukan dengan sidik ragam (ANOVA). Uji Duncan digunakan untuk mengetahui perbedaan rataan perlakuan satu dengan yang lainnya. Hasil penelitian menunjukkan bahwa pemberian jus silase dengan taraf 0.2% dalam air minum mampu meningkatkan (p<0.05) nilai hemoglobin, serta menurunkan (p<0.05) nilai eosinofil, persentase bobot hati, dan bobot duodenum. Jus silase dengan taraf 0.2% dalam air minum efektif menurunkan tingkat stres pada ayam broiler dan memiliki kemampuan yang sama dengan penggunaan antibiotik dalam meningkatkan bobot hidup broiler.
Keyword: bobot karkas, broiler, jus silase, organ dalam, profil darah

Judul: Profil Organ Dalam dan Bobot Karkas Ayam Broiler yang Diberi Acidifier Berbasis Asam Jawa, Gula, dan Garam.
Abstrak: Produktivitas ayam broiler dapat menurun apabila ayam terserang penyakit. Salah satu upaya yang dapat dilakukan untuk mencegah penurunan produktivitas ayam broiler adalah dengan pemberian acidifier. Penelitian ini bertujuan untuk menguji efektivitas pemberian acidifier berbasis asam jawa, gula, dan garam berbagai konsentrasi dalam air minum terhadap kenaikan produktivitas ayam broiler yang ditinjau profil organ dalam ayam. Penelitian ini menggunakan 96 ekor ayam strain Cobb yang dikelompokkan ke dalam rancangan acak lengkap dengan 4 perlakuan yang masing-masing terdiri atas 2 flok ulangan dan setiap flok terdapat 12 ekor ayam. Ayam berumur 20-36 hari diberi perlakuan berupa pemberian sediaan acidifier dengan komposisi asam jawa, gula, dan garam melalui air minum. Air minum dicampur dengan acidifier sesuai dengan konsentrasi yang telah ditentukan (0, 10, 20, dan 30 mL/L). Ayam yang telah berumur 36 hari dinekropsi untuk pengambilan data organ dalam. Data yang diperoleh dianalisis dengan analysis of variance (ANOVA) yang dilanjutkan dengan uji Tukey. Hasil penelitian menunjukkan pemberian sediaan acidifier berpengaruh (p<0.05) terhadap bobot karkas, lemak abdominal, ginjal, paru-paru, proventrikulus, ventrikulus, dan pankreas. Pemberian sediaan acidifier dengan konsentrasi 10 mL/L pada air minum ayam memperlihatkan hasil yang paling efektif.
Keyword: acidifier, broiler, organ dalam, produktivitas

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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