Judul: Penambahan Minyak Nabati pada Ransum Berbasis Limbah Pengolahan Kedelai terhadap Konsumsi, Profil dan Metabolit Darah Domba Garut Betina
Abstrak: Penelitian ini bertujuan untuk mengevaluasi performa ternak, gambaran profil dan metabolit darah domba Garut betina yang diberi pakan limbah pengolahan kedelai dengan penambahan minyak nabati. Perlakuan yang diberikan yaitu P0 (ransum berdasarkan pakan yang diberikan di peternak atau kontrol) dan P1 (ransum berdasarkan pakan yang diberikan di peternak dengan penambahan minyak nabati 5.2%). Penelitian ini menggunakan 10 ekor domba betina yang sudah pernah beranak dengan rataan bobot badan 24.87±4.02 kg. Parameter yang diamati yaitu konsumsi bahan kering, protein kasar, lemak kasar, serat kasar, Beta-N, profil darah (hematokrit, hemoglobin, leukosit, eritrosit) dan metabolit darah (glukosa dan kolesterol). Data dianalisis menggunakan metode T-test. Hasil penelitian menunjukan bahwa penambahan 5.2% minyak nabati di dalam ransum mempengaruhi (P<0.01) konsumsi lemak kasar, namun tidak berpengaruh (P>0.05) terhadap konsumsi bahan kering, konsumsi protein kasar, konsumsi serat kasar, konsumsi Beta-N, metabolit darah dan profil darah domba betina. Simpulannya adalah penambahan minyak nabati 5.2% di dalam ransum berbasis limbah pengolahan kedelai mampu meningkatkan konsumsi lemak kasar, namun tidak mempengaruhi konsumsi bahan kering, protein kasar, serat kasar, dan Beta-N, dan menghasilkan profil dan metabolit darah domba betina yang normal.
Keyword: domba betina, minyak nabati, metabolit darah, profil darah

Judul: Penambahan Minyak Biji Bunga Matahari Terhadap Profil Darah Domba Garut Betina pada Status Faal Berbeda
Abstrak: Sunflower seed oil is one of fat that can be used as an energy sources. The study was conducted to evaluate the effect of sunflower seed oil in premating, pregnant and lactation in eight Garut ewes with body weight 22.12±1.69 kg used in completely randomized nested design. The status of physiology (premating, pregnant, and lactation) nested in two treatment, control (without sunflower seed oil) and 4% sunflower oil addition in the ration with four replications. The parameters observed were dry matter, crude protein, crude fat intake, and blood profiles (haemoglobin, hematocrit, erythrocytes, leukocytes, MCV, MCHC, and leukocyte differentiation). Result showed that the addition of 4% sunflower seed oil was not affected to blood hematology, but the status of pregnant and lactation tends to increase erythrocytes and percentage of basophils. Dry matter, crude protein, and crude fat intake in pregnant and lactating ewes were higher than premating. Crude fat intake in 4% sunflower seed oil treatment was higher than control. It was concluded that the addition of 4% sunflower seed oil was not interfere blood hematology in premating, pregnant, and lactation ewes.
Keyword: 

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.
Keyword: