Judul: Pengaruh Pola Pemberian Pakan dengan Suplementasi Wafer Daun Lamtoro Terhadap Kecernaan dan Metabolit Darah Sapi Sumba Ongole.
Abstrak: Konsumsi daging sapi di Indonesia mengalami kenaikan setiap tahun namun produksi daging sapi masih rendah. Pola pemberian pakan yang tepat dengan suplemetasi wafer daun lamtoro dapat meningkatkan produksi daging sapi. Penelitian ini dilakukan untuk mengevaluasi pengaruh pola pemberian pakan dengan suplemen wafer yang mengandung daun lamtoro terhadap kecernaan pakan dan metabolit darah sapi sumba ongole. Penelitian menggunakan Rancangan Acak Kelompok (RAK) 4 perlakuan dan 3 kelompok dengan 12 sapi sumba ongole. Perlakuan yang diberikan yaitu P0 (konsentrat 07.00 WIB+hijauan 09.00 WIB), P1(wafer 07.00 WIB+konsentrat 08.00 WIB+hijauan 09.00 WIB), P2 (hijauan 07.00 WIB+wafer 08.00 WIB+konsentrat 09.00 WIB), dan P3 (konsentrat 07.00 WIB+hijauan 08.00 WIB+wafer 09.00 WIB). Hasil penelitian menunjukkan bahwa perlakuan tidak mempunyai pengaruh nyata terhadap kecernaan bahan kering, kecernaan bahan organik, kolesterol, glukosa, dan total protein di dalam darah darah. Pola pemberian pakan dengan suplementasi wafer daun lamtoro dapat mempengaruhi kadar urea darah pada sapi sumba ongole.
Keyword: kecernaan, metabolit darah, sapi sumba ongole, wafer daun lamtoro

Judul: Efek Pemberian Wafer Suplemen Pakan Mengandung Daun Lamtoro (Leucaena Leucocephala) terhadap Konsumsi dan Kecernaan Pakan Domba Lokal
Abstrak: Feed is an important aspect for productivity of livestock. Low quality feed can reduce the productivity of the livestock, so wafer of fed supplement is one of alternative. Wafer lamtoro supplement is one of the feed processing products that have high nutritional value that can help increase the production of livestock. This research aimed to assess the effect of wafer fed supplement on nutrient consumption and digestibility of local sheep rations. This research used Randomized Block Design with 4 treatments and 3 blocks as replicate and used 12 heads of local sheep with initial body weight 24.54±10.51 kg. Treatments were P0 = basal diet + 0% wafer of feed supplement (control); P1 = basal diet + 5% wafer of feed supplement; P2 = basal diet + 10% wafer of feed supplement; P3 = basal diet + 15% wafer of feed supplement. The Results showed that wafer fed supplement had significantly effect (p<0.05) for nutrient consumption, crude protein digestibility, final body weight and feed efficiency but not significant for dry matter digestibility, organic matter digestibility and crude fiber digestibility
Keyword: wafer lamtoro supplement., sheep, digestibility, consumption

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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