Judul: Pemberian Bio Zeolite 88 Pada Sapi Perah Laktasi Normal Serta Pengaruhnya Terhadap Kualitas Susu
Abstrak: Tujuan penelitian ini adalah untuk melihat pengaruh pemberian Bio Zeolite 88 pada sapi perah laktasi normal di Kawasan Usaha Peternakan Sapi Perah (Kunak). Pemberian Bio Zeolite 88 diharapkan mampu meningkatkan kualitas susu yang dapat dilihat dari kadar lemak, protein, bahan kering, dan bahan kering tanpa lemak. Penelitian ini menggunakan lima ekor sapi laktasi normal. Bio Zeolite 88 ditambahkan pada pakan ternak (konsentrat) sebanyak 50 glkg konsentrat. Banyaknya konsentrat yang diberikan berdasarkan produksi susu yang dihasilkan (1 kg per 2 liter susu). Bio Zeolite 88 diberikan bersama dengan konsentrat sebanyak dua kali yaitu pada pagi dan sore hari selama empat minggu. Pemeriksaan susu dilakukan sebelum perlakuan sebanyak satu kali, kemudian dua minggu setelah perlakuan dan selanjutnya seminggu sekali sampai minggu ke-4. Parameter yang diamati adalah komposisi susu yakni kadar lemak, protein, bahan kering, bahan kering tanpa lemak. Analisis data yang digunakan adalah u j i t (t-student). Berdasarkan hasil penelitian tersebut, pemberian Bio Zeolite 88 mempunyai pengaruh positif terhadap peningkatan kadar lemak, protein, bahan kering, dan bahan kering tanpa lemak.
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Judul: Penggunaan zeolit beramonium dan analog hidroksi metionin dalam ransum sapi perah laktasi
Abstrak: Penelitian bertujuan mengkaji manfaat zeolit beramonium (Z-NH4) dan analog hidroksi metionin (AHM) serta kombinasinya terhadap konsumsi pakan, metabolisme di rumen, kondisi tubuh, produksi dan komposisi susu sapi perah, menduga produksi panas tubuh serta mengkaji manfaat zeolit terhadap kualitas susu. Digunakan rancangan acak kelompok faktorial 3 x 3, perlakuan diulang 3 kali (sebagai kelompok). Percobaan in vivo dilakukan pada 27 ekor sapi perah awal laktasi sedangkan koefisien cerna dilakukan secara in vitro. Hasil penelitian menunjukkan bahwa Z-NH4 meningkatkan produksi N-NH3 secara linier (P < 0.06), Sintesis protein mikroba sangat nyata dipengaruhi Z-NH4 (P < 0.01) tapi tidak dipengaruhi oleh AHM maupun interaksinya. Z-NH4 dan AHM sangat nyata (P < 0.01) mempengaruhi kadar lemak susu. Z-NH4 tidak nyata pengaruhnya terhadap kadar protein susu (persen) , sedangkan AHM dapat meningkatkan kadar protein susu. Interaksi Z-NH4 dan AHM nyata (P < 0.05) mempengaruhi kadar protein susu. Z-NH4 dan AHM meningkatkan bahan kering susu (P < 0.05) tapi tidak berpengaruh pada produksi panas tubuh sapi perah laktasi.
Keyword: Sapi Laktasi, Teat dipping, Metionin, Analog Hidroksi Metionin, Teat dipping

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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