Judul: Komposisi Karkas dan Non Karkas Kelinci Lokal Jantan Muda dengan Pemberian Pakan Limbah Tauge
Abstrak: Kelinci memiliki potensi untuk dikembangkan sebagai salah satu ternak potong. Kelinci termasuk ternak yang menyukai segala jenis tumbuhan termasuk limbah pasar seperti limbah tauge. Limbah tauge mengandung 13.26% protein dan 64.5% TDN. Tujuan dari penelitian ini adalah untuk mengevaluasi komposisi karkas dan non karkas kelinci lokal jantan muda yang berumur 12 minggu dengan pemberian pakan mengandung limbah tauge. Peubah yang diamati adalah bobot potong, bobot tubuh kosong, bobot karkas panas dan dingin, bobot potongan komersial, bobot komposisi karkas, proporsi karkas dan potongan komersial, bobot dan persentase non karkas. Penelitian ini menggunakan 12 ekor kelinci lokal jantan dengan bobot badan awal sekitar 747 ± 104.543 g. Ternak dipelihara selama 12 minggu dan dipotong pada umur 6 bulan. Penelitian ini menggunakan rancangan acak lengkap (RAL). Terdapat tiga jenis perlakuan: 100% pakan komersil (P0), 70% pakan komersil+30% limbah tauge (P1), dan 50% pakan komersil+50% limbah tauge (P2). Data dianalisis dengan menggunakan ANCOVA dengan menggunakan bobot tubuh kosong dan karkas panas sebagai kovariabel. Penelitian ini menunjukkan dengan penambahan limbah tauge menyebabkan bobot non karkas, bobot dan persentase potongan komersial hindleg dan lambung lebih tinggi dibandingkan tanpa penambahan limbah tauge. Penambahan limbah tauge tidak mempengaruhi bobot potong, bobot tubuh kosong, dan bobot karkas. Sehingga dapat disimpulkan bahwa limbah tauge dapat diberikan dalam bentuk segar untuk penggemukan kelinci hingga 50% menggantikan pakan komersil
Keyword: bean sprouts’ waste, carcass and non-carcass weight, local rabbit

Judul: Komposisi Karkas dan Non Karkas Kelinci Lokal Jantan Muda dengan Pemberian Pakan Limbah Tauge
Abstrak: Rabbits have potential to be developed as meat producer. Rabbit is palatable with almost every roughage, even market waste such as bean sprouts’ waste. Bean sprouts’ waste contains of 13.26% protein and 64.5% TDN. The aim of this research was to evaluate carcass and non carcass composition of male local rabbit age 12 weeks fed with bean sprouts’ waste. Measured variables were slaughter weight, empty body weight, hot carcass weight, cold carcass weight, commercial cuts, carcass composition weight, carcass and commercial cuts proportion, non carcass weight and percentage. This study used 12 male local rabbit fryer with average weight 747±104.543 g. The rabbits reared as long as 12 weeks and slaughtered at age of 6 months. This study used completely randomized design. There were 3 treatments that consisted of 100% of commercial feed (P0), 70% of commercial feed+30% of bean sprouts’ waste (P1), and 50% of commercial feed+50% of bean sprouts’ waste (P2). The data was analysed using ANCOVA with empty body weight and hot carcass weight as covariables. Results showed that the addition of bean sprouts’ waste causing non carcass weight, stomach and hindleg commercial cut weight and percentage were higher than without the addition of bean sprouts’ waste. Addition of bean sprouts’ waste had no effect on slaughter weight, empty body weight, and carcass weight. In conclusion, bean sprouts’ waste can be added fresh to rabbit feed up to 50% in substitute of commercial feed.
Keyword: local rabbit, carcass and non-carcass weight, bean sprouts’ waste, Bogor Agricultural University (IPB)

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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