Judul: The effect of clenbuterol on growth performance, carcass characteristics and meat quality of growing male pig
Abstrak: The objective of this research was to study the effect of clenbuterol on growth performance, carcass characteristics and quality of meat of growing male pig. This study was conducted as a factorial experiment with a completely randomized design. This study used three clenbuterol levels, i.e. 0 mg, 0.2 mg and 0.4 mglkg feed respectively and two breeds of pig i.e. local pig and crossbred pig. The total pigs used which twenty four male pigs consisting of 12 heads of local pig and 12 heads of cross bred, with the average of initial live weight of 52.5 ± 28.26 kg. Pigs were given ad libitum access to a 14.96% crude protein and ME 2400 Kcalkg diet. The diet was formulated according to NRC. All pigs were slaughtered following 6 weeks of experimental period and data on carcass characteristics were collected.
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Judul: Pengaruh pemberian "Clenbuterol" terhadap saluran pencernaan domba lokal
Abstrak: Penelitian ini bertujuan untuk mempelajari bobot dan panjang bagian-bagian saluran pencernaan dan bobot organ- organ bagian dalam tubuh pada domba lokal jantan yang diberi clenbuterol. Penelitian dilakukan dari bulan Maret sampai bulan Juli 1995 di laboratorium lapangan Ilmu Produksi Ternak Ruminansia Kecil, Fakultas Peternakan IPB. Enam belas ekor domba jantan lokal yang berumur kurang dari satu tahun dengan bobot badan 15-20 kg diberi perlakuan suntikan clenbuterol selama 11 minggu. Perla- kuan terdiri atas taraf penyuntikan clenbuterol 0 µg/kg BB (CB), 5 µg/kg BB (CB5), 10 µg/kg BB (CB10), dan 20 µg/kg BB (CB20). Ransum yang gunakan adalah ransum pellet produksi Indofeed dan diberikan dua kali sehari (pagi dan sore), sedangkan air minum diberikan ad libitum Kandang individual digunakan dalam penelitian ini. Penempatan ternak ke dalam kandang dan perlakuan dilakukan secara acak. Pada akhir perlakuan semua ternak dipotong. Saluran pencernaan dan organ-organ tubuh bagian dalam ternak dikeluarkan dan diukur bobot dan panjangnya dalam keadaan bersih (tanpa lemak dan isi saluran pencernaan). Penelitian menggunakan Rancangan Acak Lengkap (RAL) dan pengaruh perlakuan dianalisis dengan Analisis Sidik Peragam. Untuk membandingkan pengaruh dari rataan perla- kuan digunakan uji t. Hasil penelitian menunjukkan bahwa penyuntikan clenbuterol tidak nyata mempengaruhi bobot dan panjang bagian-bagian saluran pencernaan dan organ-organ tubuh bagian dalam kecuali pada bobot oesophagus dan bobot reticulum. Bobot oesophagus CB20 sangat nyata (P<0,01) lebih ringan daripada kontrol dan nyata (P<0,05) lebih ringan daripada CB5 dan CB10, sedangkan bobot reticulum CB20 sangat nyata (P<0,01) lebih ringan daripada kontrol dan CB5. Kesimpulan yang dapat diambil dari penelitian ini adalah bahwa clenbuterol tidak mempengaruhi ukuran bagian- bagian saluran pencernaan dan bobot organ-organ tubuh bagian dalam, kecuali bobot oesophagus dan bobot reticu- lum, karena saluran pencernaan bukanlah target organ dari clenbuterol.
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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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