Judul: Organic Mineral Mixed Supplementation In The Feed Of Isa Brown Laying Hens On The Performance And Quality Of Eggs Aged 68-75 Weeks
Abstrak: Penelitian ini dilakukan untuk mengevaluasi suplementasi campuran mineral organik dalam pakan terhadap performa dan kualitas telur ayam Isa brown umur 68-75 minggu. Penelitian ini menggunakan 2033 ayam petelur strain Isa brown berumur 68 minggu sampai 75 minggu. Dalam pengujian kualitas, 24 sampel digunakan. Penelitian ini menggunakan 2 perlakuan dan 12 ulangan. Metode yang digunakan adalah Rancangan Acak Lengkap (RAL) yaitu: T0 (pakan kontrol), dan T1 (pakan kontrol + suplementasi campuran mineral organik). Variabel yang diamati adalah kualitas telur (warna kerabang, kekuatan kerabang, ketebalan kerabang, dan haugh unit) dan performa yang diamati (konsumsi pakan, produksi telur, bobot telur, konversi pakan, dan produksi massa telur). Data dianalisis menggunakan uji paired sample T-test dan uji wilcoxon dengan taraf 5%. Hasil penelitian menunjukkan bahwa suplemen campuran mineral organik berpengaruh nyata (P<0,05) terhadap produksi telur ayam, konversi pakan, produksi massa telur, warna cangkang, ketebalan cangkang, dan kekuatan cangkang, tetapi tidak terdapat perbedaan nyata (P>0,05) terhadap bobot telur, konsumsi pakan, dan haugh unit. Dapat disimpulkan bahwa penggunaan suplementasi campuran mineral organik dapat memberikan hasil yang baik pada performa dan kualitas telur ayam sehingga dapat diaplikasikan., This study was conducted to evaluate organic mineral mixed suplementation In the feed of Isa brown laying hens on the performance and quality of eggs aged 68-75 Weeks. This study used 2033 laying hens strain Isa brown aged 68 weeks to 75 weeks. In quality testing, 24 samples were used. This study used 2 treatments and 12 replications. The method used was Completely Randomized Design (CRD) were: T0 (control feed), and T1 (control feed + organic mineral mixture supplementation). The observed variables were egg quality (shell color, shell strength, shell thickness, and haugh unit) and observed performance (feed consumption, egg production, egg weight, feed conversion, and egg mass production). Data were analyzed using paired sample T-test and wilcoxon test with a level of 5%.The results showed that organic mineral mix supplement had a significant effect (P<0,05) on hen day production, feed conversion, egg mass production, shell color, shell thickness, and shell strength, but there was no significant difference (P>0,05) on feed consumption, egg weight, haugh unit. The results of this study can be concluded that the use of organic mineral mixture supplementation can provide good results on the performance and quality of chicken eggs so that it can be applied.
Keyword: egg quality, laying hen (Isa brown), organic mineral, performance

Judul: Production of Supplementary Wafers with Different Levels of Molasses and the Effect on the Performance of Laying Hens 24-31 Weeks Old
Abstrak: Penelitian ini bertujuan mengevaluasi kualitas fisik wafer suplemen dengan level molases yang berbeda dan mengetahui pengaruhnya terhadap performa ayam Isa Brown yang diberi wafer suplemen. Penelitian ini menggunakan 64 ekor ayam petelur (umur 24-31 minggu). Penelitian dibagi menjadi dua tahap. Tahap 1 adalah pembuatan wafer suplemen dengan level molases yang berbeda. Data diuji dengan ANOVA. Peubah yang diukur adalah aktivitas air (Aw), berat jenis (BJ), kadar air (KA), kelarutan total (KT), dan Wafer Durability Index (WDI). Hasil penelitian menunjukkan bahwa level molases yang berbeda berpengaruh nyata (P<0,05) terhadap BJ, KA, KT dan WDI tetapi tidak berpengaruh nyata (P>0,05) terhadap Aw. Tahap 2 adalah pemberian wafer suplemen pada ayam Isa Brown. Data diuji dengan uji T. Peubah yang diamati adalah konsumsi pakan, konsumsi air minum, Hen Day Production (HDP), bobot telur, massa telur, Feed Conversion Ratio (FCR), dan mortalitas. Pemberian wafer suplemen terbaik tidak berpengaruh nyata (P>0,05) terhadap konsumsi pakan, konsumsi air minum, HDP, bobot telur, massa telur, FCR, dan mortalitas., The research aimed to evaluate the physical quality of supplement wafers with the different levels of molasses and to measure the performance of Isa Brown chickens that given supplement wafer. This study used 64 laying hens (24-31 weeks old). This study was divided into 2 steps. Step 1 was supplement wafer production with different levels of molasses. Data was tested by ANOVA. Parameters measured were water activity (Aw), density, water content (KA), total solubility, and Wafer Durability Index (WDI). The results showed that molasses had a significant effect (P<0.05) on bulk density, water content, total solubility, and WDI but had no significant effect (P>0.05) on Aw. Step 2 was given supplement wafer to Isa Brown chickens. Data was tested by T-test. Parameters measured were feed consumption, drinking water consumption, Hen Day Production (HDP), egg weight, egg mass, Feed Conversion Ratio (FCR), and mortality. Adding the best supplement wafers had no significant effect (P>0.05) on egg weight, egg mass, feed consumption, drinking water consumption, FCR, HDP, and mortality.
Keyword: Ayam Isa Brown, kualitas fisik, performa, wafer suplemen

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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