Judul: Kecernaan energi semu marmot (Cavia porcellus) jantan dan betina lokal pada berbagai level pemberian vitamin C
Abstrak: The object of this research is to compare the effect of vitamin C intake at numerous levels to apparent energy digestible of male and female indigenous guinea pig. The animals that used in this research are 18 indigenous male guinea pigs and 18 indigenous female guinea pigs. The average guiaea pig weight at the beginning of the research is around 250 to 500 gmms. The treatments are RO (complete ration without vitamin C adding), R1 (complete ratio with vitamin C 3 mg/animdday), R2 (complete ration with vitamin C 4 mglanimallday), R3 (complete ration with vitamin C 5 mglanimal/day), R4 (complete ration with vitamin C 6 mglanimalld~y) and RS (complete ration with vitamin C 7 mglanimallday). Research desiy used is Factorial Completely Randomize Design, with factor A as genitalia male and female and factor B as vitamin C intake level, which divided into 3 groups based on v.eight, high (450-500g), medium (350-450g) and low (250-350g). The result shows rnat vitamin C intake From 4 mglanimal/day to 7 mglanimallday can increase erergy cmsumption and do not effect fecei energy and digest coefficient of apparent energy of male and female guinea pig. Energy consumption and feces energy of male guinea pig is higher than the female, but the digest coefficient of apparent energy of female guinea pig is higher than the male. Besides that, there's no interaction behveen vitamin C intake level and the genitalia of guinea pig. From this research, we can conclude that 3 ,4, 5, 6 and 7 mglanimallday of vitamin C intake do not effect apparent energy digestible of .nale ;md female indigenous guinea pig.
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Judul: Distribusi energi dalam saluran pencernaan domba lokal jantan lepas sapih
Abstrak: Penelititan ini dilakukan di Laboratorium Ilmu Produksi Ternak Ruminansia Kecil, Jurusan Ilmu Produksi Ternak, Fakultas Peternakan, Institut Pertanian Bogor, selama empat bulan mulai dari tanggal 18 November 1986 sampai dengan tanggal 18 Maret 1987. Tujuan penelitian ini ialah untuk mempelajari pengaruh pemberian ampas tahu pada berbagai taraf dengan ransum dasar rumput lapangan terhadap penyebaran nilai energi bruto digesta organ-organ saluran pencernaan ternak domba lokal jantan lepas sapih, 24 jam setelah pemberian makan dengan pemuasaan selama 16 jam. Rancangan percobaan yang digunakan ialah Rancangan Acak Lengkap. Selain uji F, uji Duncan Orthogonal Polynomial juga digunakan dalam analisa data. Ternak yang diguna- kan ialah 16 ekor domba lokal jantan lepas sapih dengan perlakuan ampas tahu yang berbeda, yaitu: 0 gram/ekor/hari (L1), 100 gram/ekor/hari (L2), 200 gram/ekor/hari (L3), dan 300 gram/ekor/hari (L4). Ransum dasarnya rumput lapangan kering matahari yang diberikan ad libitum. Hasil penelitian menunjukkan bahwa pada saat 24 jam setelah pemberian makan dengan pemuasaan selama 16 jam perlakuan ampas tahu pada taraf 0 gram/ekor/hari sampai dengan 300 gram/ekor/hari tidak berpengaruh terhadap besarnya energi bruto digesta organ saluran pencernaan yang sama. Pada masing-masing taraf ampas tahu enregi bruto organ saluran pencernaan berbeda nyata. Urutan rataan energi bruto digesta organ-organ saluran pencernaan tertinggi sampai terendah adalah digesta usus halus, digesta abonasum, digesta ruret, digesta kolon, digesta rektum, dan digesta sekum.
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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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