Judul: Pemanfaatan Energi Pada Domba Di Up3 Jonggol Yang Mendapat Rasio Rumput Brachiaria Humidicola dan Legum Pohon (Leucaena Leucocephala dan Gliricidia Sepium) Yang Berbeda
Abstrak: This experiment was aimed to evaluate energy utilization of legume (Gliricidia sepium and Leucaena Leucocephala) mixed with concentrate and grass (Brachiaria humidicola) in male local sheep at UP3 Jonggol. This experiment was conducted according to completely randomized block design with five treatments and four replications which body weight as a block. The treatments were : R1 (90% Brachiaria humidicola + 10% concentrate), R2 (80% Brachiaria humidicola + 10% legume + 10% concentrate ), R3 (70% Brachiaria humidicola + 20% legume + 10% concentrate), R4 (60% Brachiaria humidicola + 30% legume + 10% concentrate), and R5 (70% Brachiaria humdicola + 30% legume). Rasio Gliricidia sepium and Leucaena Leucocephala in legume was 75% : 25%. Variables measured were dry matter and nutrient intake (crude protein, fat and fiber) and also energy utilization (intake, digestibility and metabolizable energy). Data were analyzed using analysis of variance and mean of treatment were further analyzed using Duncan test. The experiment showed that treatments affected (P<0.05) to the crude protein consumption. However, there were no effect of energy utilization in all treatments. It is concluded that the addition of 30% legume could increase crude protein intake but not for energy budget.
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Judul: Performa Domba yang diberi Rumput Brachiaria humidicola dan Legum Pohon (Leucaena leucocephala dan Gliricidia sepium) dengan Rasio yang Berbeda
Abstrak: This experiment was done to examine the addition effect of Gliricidia sepium and Leucaena leucocephala leaves mixed with Brachiaria humidicola on performance of sheep at UP3J. Twenty male sheep with initial body weight 13.95±1.46 kg were used in this experiment. The experiment used completely randomized block design with 5 treatments and 4 replications. The treatments were R1 (90% Brachiaria humidicola + 10% concentrate), R2 (80% Brachiaria humidicola + 10% legume + 10% concentrate ), R3 (70% Brachiaria humidicola + 20% legume + 10% concentrate), R4 (60% Brachiaria humidicola + 30% legume + 10% concentrate), and R5 (70% Brachiaria humidicola + 30% legume). Parameters observed in this experiment included feed consumption, daily body weight gain, feed efficiency, and Income Over Feed Cost (IOFC). Results showed that treatments improved protein consumption, but did not give significant effect on performance of sheep in UP3J. It is concluded that giving leaf of Brachiaria humidicola and legume (Gliricidia sepium and Leucaena luecocephala) at any level did not give any significant effect on sheep consumption, daily body weight gain, feed efficiency, and income over feed cost.
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Judul: Model SIRS pada Proses Penularan Penyakit Influenza dengan Populasi yang Terinfeksi Virus
Abstrak: Penyakit influenza termasuk salah satu jenis penyakit menular yang disebabkan oleh virus influenza. Proses penularan penyakit ini dapat dimodelkan dengan menggunakan model SIRS. Dalam tulisan ini dianalisis penularan penyakit influenza pada populasi yang terinfeksi virus dengan jumlah individu yang terinfeksi awal berbeda. Analisis kestabilan pada proses penularan virus influenza dengan menggunakan model SIRS ini menghasilkan 2 titik tetap, yaitu titik tetap tanpa penyakit (T1) dan titik tetap endemik (T2) dengan beberapa nilai parameter. Nilai parameter ini ada kaitannya dengan konsep reproduksi dasar virus . Ketika reproduksi dasar virus kurang dari 1 (0R01R<) titik tetap tanpa penyakit (T1) simpul stabil, dan titik tetap endemik (T2) spiral tak stabil sehingga virus akan hilang dari populasi. Ketika reproduksi dasar virus lebih besar dari 1 () titik tetap tanpa penyakit (T01R>1) akan sadel, dan titik tetap endemik (T2) akan spiral stabil sehingga virus akan bertahan dalam populasi.
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