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: Komposisi Jaringan pada Potongan Komersial Karkas Domba Garut dan Ekor Tipis Umur Sebelas Bulan dengan Ransum Penggemukkan Mengandung Indigofera sp.
Abstrak: Garut and Thin Tailed sheep are categorized as small ruminant animal. They are potential as meat producers. The aim of this research was to examine differences in tissue composition of commercial cuts from garut and Thin Tailed sheep aged 11 months and fattened on ration containing Indigofera sp. The study used four garut and four Thin Tailed sheep with initial body weight of 14,9 ± 1,1 kg and 13,6 ± 0,6 kg respectively (CV=10,14%). The experiment was set up ini completely randomized design. The animals were intensively fattened for three months in individual cages. They were fed ad libitum with pelleted ration contained Indigofera sp.. The sheep were slaughtered, dressed, and the chilled carcasses were cutted into seven commercial cuts and each cuts were dissecsed into muscle, fat, and bone. The results showed that there were no significantly differences in carcass muscle and bone weight, but carcass fat weight. Garut sheep had significantly (P<0,05) lower fat weight in the carcass compare to Thin Tailed sheep. The differences occured primaly in shoulder, loin, breast, and leg cuts. However on percentage bases, there were significant (P<0,05) between breed differences in carcass compotition. The garut sheep carcass contained significantly more muscle and bone, but less fat than those of Thin Tailed sheep.
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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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