Judul: Kondisi Feses dan Pertambahan Bobot Badan Pedet Sapi Perah FH yang Diberi Perlakuan Jus Silase Jagung Secara Oral
Abstrak: Silase adalah produk hasil fermentasi an-aerob pakan berkadar air tinggi dalam kurun waktu tertentu. Jus silase adalah cairan yang dihasilkan dari silase. Tujuan penelitian ini adalah untuk mengevaluasi kondisi feses dan pertambahan bobot badan pedet sapi Friesian Holstein yang diberi jus silase jagung secara oral. Sebanyak 9 ekor pedet FH jantan dibagi menjadi tiga perlakuan, yaitu: ransum kontrol (P1), ransum yang mengandung antibiotik 50 mg kg-1 (P2), dan kontrol + jus silase 0.3% (P3). Rancangan percobaan yang digunakan adalah rancangan acak lengkap dan parameter yang diukur adalah kondisi feses dan pertambahan bobot badan. Data dianalisis dengan analisis ragam (ANOVA). Hasil penelitian menunjukkan bahwa dibandingkan perlakuan kontrol, perlakuan jus silase dan antibiotik cenderung meningkatkan konsistensi feses dan pertambahan bobot badan pedet. Dapat disimpulkan bahwa performa pedet membaik setelah diberi jus silase yang nilainya sebanding dengan antibiotik.
Keyword: feses, pedet Friesian Holstein, pertambahan bobot badan, silase

Judul: Performa dan kecernaan bahan kering ransum pada pedet sapi perah (Friesian Holstein) yang diberi jus silase asal tanaman jagung muda.
Abstrak: Masa prasapih merupakan fase kritis dalam proses pemeliharaan pedet karena pencernaan yang belum sempurna sehingga sering terjadi infeksi yang menyebabkan diare. Penelitian ini bertujuan untuk mengkaji pengaruh pemberian jus silase sebagai pengganti antibiotik terhadap performa dan kecernaan bahan kering pedet FH. Sembilan ekor pedet jantan berumur satu bulan dengan rataan bobot badan 54.27 ± 4.33 kg secara acak diberi salah satu dari tiga (3) perlakuan yang berbeda yaitu ransum kontrol (R0), ransum yang mengandung antibiotik 50 mg kg-1 (R1), dan ransum kontrol + 0.3% jus silase (R2). Parameter yang diamati adalah konsumsi bahan kering, pertambahan bobot badan , efisiensi pakan, dan kecernaan bahan kering pakan. Rancangan yang digunakan adalah rancangan acak lengkap (RAL) dan data yang didapatkan dianalisis menggunakan analysis of variance (ANOVA). Hasil penelitian menunjukkan bahwa pedet yang diberi perlakuan jus silase memiliki performa dan kecernaan yang sama dengan pedet yang diberi perlakuan antibiotik dan lebih baik dibandingkan dengan perlakuan kontrol. Dapat disimpulkan bahwa jus silase dapat digunakan sebagai alternatif pengganti antibiotik pada pedet FH.
Keyword: jus silase, kecernaan, pedet FH (Friesian Holstein), performa

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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