Judul: Performans Organ Reproduksi Mencit (Mus musculus) yang Diberi Pakan Mengandung Protein Sel Tunggal
Abstrak: Reproduksi ternak ditentukan oleh kemampuannya untuk menghasilkan selsel kelamin yang berkualitas dan melakukan aktivitas reproduksi agar dapat menghasilkan individu baru dalam waktu yang singkat. Untuk menghasilkan sel-sel kelamin yang baik dibutuhkan dukungan organ-organ kelamin yang dapat berfungsi dengan normal. Sel-sel dalam organ reproduksi tersebut membutuhkan masukan nutrisi yang berkualitas. Dengan demikian kualitas pakan turut juga mempengaruhi performa organ-organ reproduksi. Sumber protein alternatif yang dapat digunakan adalah Protein Sel Tunggal (PST) . Penggunaan PST selain menguntungkan secara ekonomis dan nutrisi, ternyata banyak penelitian menunjukkan pengaruh terhadap organ-organ vital. Pengaruh yang sama mungkin dapat terjadi pada organ-organ reproduksi. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan PST sebagai substitusi Meat and Bone Meal (MBM) pada ransum terhadap performan organorgan reproduksi. Taraf substitusi yang diujikan yaitu 0%, 1,5%, 3%, 4,5% dan 6% terhadap MBM. Hewan percobaan yang digunakan adalah mencit sejumlah 50 ekor (jantan dan betina) yang akan dibagi dalam lima perlakuan dan lima ulangan dengan diberi pakan dan minum ad libitum. Masing-masing ulangan terdiri atas dua ekor. Mencit dipelihara selama dua bulan dan pengamatan dilakukan di akhir penelitian. Peubah yang diukur meliputi bobot, panjang dan diameter testis, panjang vas deferens, jumlah sperma mencit jantan serta bobot dan panjang organ reproduksi betina. Selain itu dilakukan uji histopatologi terhadap organ reproduksi jantan maupun betina.
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Judul: Reproduksi mencit (Mus musculus) yang diberi pakan mengandung protein sel tunggal sebagai pengganti tepung daging dan tulang dalam ransum
Abstrak: This researclx was conducted to study the effects of Single Cell Protein (SCP) as substitutes of Meat and Bone Meal (MBM) on the reproduction of mice. A total of 50 mice which divided into 25 units, each units consist of a co~~polef male and female were used. This study used Randomized Comp1e:e Design consist is 5 tretments and 5 replicates. T!le treatment were : 1) R1 (6% MBM and 0% SCP), 2) R2 (4,5% MBM and 1,5% SCP), 3) R3 (3% MBM and 3% SCP), 4) R4 (1,5% MBM and 4,5% SCP) and 5) R5 (0% MBM and 6% SCP). Feed and water was given ad libiturn. The results showed that treatment were signivicantly (P<0.01) affect feed intake of dams and childs weight gain but did 1101 affect final weight of dams, dams weight gain, litter size and birth weight of youngs. The best level of Single Cell Protein as substitutes Meat Bone Meal is 3% SCP or 50% substituted MBM. Jt is concluded that 50% MBM could be replaced with SCP in mice diet without affecting mice reproduction. Key words : Single Cell Protein, Meat and Bone Meal, Mice, Reproduction
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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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