Judul: Komposisi Jaringan Potongan Komersial Karkas Domba Ekor Tipis Jantan Umur Enam Bulan dengan Ransum Penggemukan Mengandung Indigofera sp. dan Limbah Tauge
Abstrak: The research aimed to study tissue composition in commercial cuts of the six month of male thin tailed lamb fattened on ration containing Indigofera sp. and sprouts waste. This experiment used eight thin tailed lamb raised for three months in individual cages. The data was analyzed by Analysis of Covariance (ANCOVA). Characteristics carcass corected with body weight before treatments were conducted, composition and distribution carcass corrected with chilled carcass weight. The result showed that the treatment did not significantly affect (P>0,05) carcass characteristics and composition. However, thin tailed sheep fed on ration with sprouts waste had significantly (P<0,05) heavier muscle in the rack and significantly lighter of fat in the leg (P<0,05) compared to those fed on ration contained Indigofera sp. Thin tailed sheep fed on ration with sprouts waste had significantly (P<0,05) higher percentage of bone in leg compared to those fed on ration contained Indigofera sp. Leg at thin tailed sheep fed on ration with Indigofera sp. had the best proportion commercial cut carcaas.
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Judul: Komposisi Potongan Komersial Karkas Domba Garut Umur Sebelas Bulan dengan Ransum Penggemukan Mengandung Limbah Tauge dan Indigofera sp.
Abstrak: Lamb is a small ruminant which produces meat for human consumption. The purpose of this study was to examine the influence of ration on carcass characteristics and composition. Eleven male Garut lambs of eight month old were used in the study. They were divided into two groups and given ration containing mung bean waste and Indigofera sp. respectively and fattened for three months. Parameter observed include carcass characteristics, carcass tissue component and distribution within commercial cuts. The result showed the Garut lamb that was given difference ration containing was significantly higher (P<0,05) to slaughter weight, empty body weight, carcass weight, percentage of carcass compared to that fed on ration containing Indigofera sp. Carcass tissue composition include meat and bone weight of Garut lamb fed on mung bean waste ration containing significantly (P<0,05) hevier compared to that fed on Indigofera sp. Meat and bone in carcass tissue distribution within commercial cuts was significantly different, it can be seen from rack, leg, breast, and shank cut
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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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