Judul: Pengaruh Penambahan Biskuit Biosuplemen Pakan terhadap Produksi Susu dan Pertambahan Bobot Badan Kambing Peranakan Etawah (PE).
Abstrak: The main constraints of farmers in the tropics to produce high milk production is feed availability and quality mainly during the dry season. Biscuits biosupplements is one product of feed technology as an alternative solution to provide nutritious, durable and easily stored feed. The objectives of this study were to know the effect of biosupplements biscuits to goat milk production. A randomized complete block design with four treatments and three replications used in this study. The treatment were R0= 0% biscuits biosupplement, R1= 5% biscuits biosupplement, R2= 10% biscuits biosupplement and R3= 15% biscuits biosupplement. Measured variables such as milk production and body weight gain. The results showed that treatment of biscuits biosupplement feeding was significant on increase milk production at the end of the study (P<0.05), but no significant to the body weight gain (P>0.05).
Keyword: milk production, goat, body weight gain, biscuit, biosupplements

Judul: Efek Pemberian Biskuit Biosuplemen terhadap Produksi Susu, Kadar Lemak dan Protein Susu Kambing Peranakan Etawah
Abstrak: Kambing Peranakan Etawah merupakan ternak yang potensial sebagai penghasil susu dengan produksi susu dapat mencapai 0.45-2.1 liter hari-1. Akan tetapi produksi susu di peternakan masih relatif rendah. Hal ini disebabkan rendahnya kualitas hijauan, sehingga perlu teknologi pengolahan pakan. Biskuit biosuplemen merupakan produk teknologi pengolahan pakan yang mengandung protein dan energi tinggi terbuat dari daun pepaya, daun indigofera dan bahan baku alami lainnya. Penelitian ini bertujuan untuk menganalisis pengaruh biskuit biosuplemen terhadap produksi susu, protein dan kadar lemak susu kambing perah. Penelitian ini dilakukan dari bulan Mei 2013 sampai dengan Agustus 2013 di peternakan Cordero Farm, Ciapus, Bogor, Jawa Barat. Penelitian ini dianalisis dengan uji statistik T-Test dengan dua perlakuan dan enam ulangan. Perlakuan yang diberikan adalah T0 (Hijauan + konsentrat + biskuit biosuplemen 0 %) dan T1 (Hijauan + konsentrat + biskuit biosuplemen 15%). Hasil uji statistik menunjukkan bahwa pemberian biskuit biosuplemen tidak memberikan pengaruh yang nyata terhadap produksi susu, lemak dan kadar protein susu kambing peranakan etawah di Cordero Farm. Pemberian biskuit biosuplemen diindikasikan dapat memperlambat laju penurunan produksi susu.
Keyword: biskuit biosuplemen, lemak, produktivitas, protein, susu

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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