Judul: Efisiensi Biaya Produksi Telur Omega-3 Ayam Arab dan Ayam Ras
Abstrak: Telur omega-3 memiliki banyak manfaat dan menunjang pola hidup sehat. Telur omega-3 diharapkan menjadi produk yang dapat membantu pemenuhan hidup sehat. Penelitian ini bertujuan untuk mengidentifikasi performa ayam Arab dan ayam Ras serta menganalisa unit cost produksi telur omega-3 ayam Arab dan ayam Ras. Penelitian ini menggunakan 32 ekor ayam Arab berumur 20 minggu dan 32 ekor ayam Ras berumur 45 minggu yang diteliti selama 6 minggu. Ayam ini dipelihara di kandang cage individu dan koloni. Pakan yang digunakan adalah pakan komersial yang ditambahkan 5% suplemen omega-3. Variabel yang diamati yaitu konsumsi pakan, hen day production, bobot telur, konversi pakan dan unit cost (analisa biaya produksi dan nilai Break Even Point). Data dianalisa menggunakan uji t. Hasil dari penelitian menunjukkan terdapat perbedaan yang nyata antara konsumsi pakan, hen day production, bobot telur dan konversi pakan pada ayam Arab dan ayam Ras (P<0.05). Biaya produksi telur omega-3 ayam Arab lebih rendah dibandingkan telur omega-3 ayam Ras. Produksi telur ayam kedua strain yang diteliti dibawah nilai Break Even Point (BEP) produk sehingga manajemen pemeliharaan perlu dioptimalkan.
Keyword: ayam Arab, ayam Ras, biaya produksi, telur omega-3

Judul: Productivity on layer and arabic chicken to produce of omega-3 egss on colony and individual cage
Abstrak: Telur omega-3 dikenal masyarakat sebagai telur yang rendah lemak dan rendah kolesterol serta menyehatkan bagi tubuh. Pemenuhan kebutuhan telur omega-3 bisa diperoleh dari ayam ras dan ayam arab yang dipelihara pada kandang individu dan belum ada penelitian mengenai respon ayam ras dan arab yang dipelihara pada kandang yang berbeda (individu dan koloni) terhadap produktivitas dan kualitas eksterior telur omega-3 yang dihasilkan. Kualitas eksterior berperan penting bagi konsumen dalam memilih telur konsumsi. Penelitian ini bertujuan untuk mengkaji produktivitas dan kualitas eksterior telur omega-3 ayam ras dan arab yang dipelihara pada kandang koloni dan individu. Ternak yang digunakan adalah ayam ras strain Lohman dan ayam arab sebanyak 32 ekor untuk masing-masing jenis ayam dengan umur 21 minggu untuk ayam arab dan 45 minggu untuk ayam ras. Ayam ras dan arab sebanyak 16 ekor dipelihara pada kandang individu dengan ukuran 35 x 30 x 35 cm. Kemudian sebanyak 16 ekor ayam arab dan ayam ras dipelihara pada kandang koloni dengan ukuran 50 x 60 x 35 cm. Setiap kandang koloni diisi dengan 4 ekor ayam. Pakan yang digunakan adalah suplemen omega-3 yang dicampur dengan pakan komersial. Hasil penelitian ini yaitu produktivitas ayam ras yang dipelihara dalam kandang individu lebih baik dari pada kandang koloni. Produksi telur yang tinggi pada ayam arab dengan pemeliharaan pada kandang koloni. Jumlah telur omega- 3 yang retak, pecah dan abnormal pada kadang individu adalah 1.89% untuk ayam arab dan 1.33% untuk ayam ras dan pada kandang koloni 0.19% untuk ayam arab dan 0.18% untuk ayam ras., Omega-3 eggs are known to the public as a low fat and low cholesterol and healthy for the body. Omega-3 eggs are an innovative product that is derived from omega-3 supplementation in the feed of laying hens. Fulfillment of omega-3 eggs are commonly obtained from laying hen and arabic (local chicken) that have a high productivity with maintenance in individual cages. However, there has been no research on the responses of laying hen and arabic are maintained in different cages (individual and colony) on productivity and exterior quality of omega-3 eggs. This study aimed to determine the productivity and exterior quality the omega-3 eggs from layer and arabic chickens. The chicken used Arabic breeds and layer with the age 21 and 45 weeks. Arabic and layer chicken were 16 birds kept in individual cages with size 35 x 30 x 35 cm. And 16 of arabic chickens and layer kept in cages with colony size of 50 x 60 x 35 cm were filled with four birds each cage. The feed was commercial laying hens added omega-3 supplements. Results of this study were laying hens productivity levels maintained in individual cages better than the colony. While the arabic chicken, egg productivity in obtaining a high omega-3 was the maintenance of colony. The number of eggs were cracked, broken and abnormal on individual cage were 1.89% on arabic chicken and 1.33% on layer. Whereas on colony that cracked, broken and abnormal were 0.19% on arabic chicken and 0.18% on layer.
Keyword: ayam, kandang koloni, kandang individu, telur omega-3

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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