Judul: Pemberian level tepung kemangi (Ocimum basilicum) pada ransum ayam broiler terhadap bobot hidup, persentase karkas, giblet dan lemak abdomen
Abstrak: This research was conducted to determine the effecct of addition of kemangi leaf meal in the diet on the body weight percentages of carcass, giblet and abdominal fat of broilers. Hundred and twenty eight Day Old Chick broiler Cobb strain was used as in this experiment. Completely Randomized Design was used in this experiment with four treatments and four replications.
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Judul: Suplementasi Tepung Daun Kemangi (Ocimum basilicum) Terhadap Performa dan Kualitas Karkas Ayam Broiler Diinfeksi Escherichia coli
Abstrak: This research was conducted to evaluate the effect suplementation kemangi of meal (Ocimum basilicum) in the diet as E. coli antibacteria in improving broiler performans and carcass quality. This experiment used 180 day old chicks (DOC) of broiler strain which were kept litter system for 34 days. The experiment used completely randomized design with six treatment and three replications consisting of 10 broilers in each replication. The treatment diet were R0 = control diet, R1 = R0 infected with E. coli, R2 = R1 + 1% kemangi meal, R3 = R1 + 2% kemangi meal, R4 = R1 + 3% kemangi meal, R5 = R1 + antibiotic. The data were analyzed with analysis of variance. The variable observed were feed consumption, body weight gain, final of body weight, feed conversion ratio, mortality, total colony of E. coli, carcass weight, abdominal fat, and meat cholesterol. The result showed that use of kemangi meal up to 3% in ration decreased the number of E.coli in excreta before infection. The result for carcass quality showed that the use of kemangi up to 3% in the diet decreased meat cholesterol. The treatment did not affect performance, final body weight, carcass and abdominal fat.
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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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