Judul: Kecernaan Nutrien dan Retensi Nitrogen Ransum Mengandung Limbah Tauge dengan Waktu Pemberian Berbeda pada Domba Garut
Abstrak: Mung bean sprouts waste as alternative feed ingredients have good nutritional quality as livestock feed. Research aimed to eva luate the digestibility of dry matter, organic matter, crude protein, crude fat, crude fiber, extract material without nitrogen and nitrogen retention ration with different feeding time management (morning and evening) of Garut lamb. About 12 heads of Garut sheep with the average body weight 15.06±2.41 kg were analyzed in 2x2 factorial randomized complete block design. The first factor was different feed fonnu!a consist of RI (consent rate 60% + grass 40%) and 40%) and R2 (consent rate 60% + mung bean sprouts waste 40%). The second factor was different feeding time consist of P (morning) and S (evening). The result of statistic analysis showed there was no interaction both of treatment in consumption nutrient, digestibility nutrient, nitrogen retention . The type of feed had significant effect (P<O.OS) in DM, Ash, CP, CF, EE, NFE consumption (g kg ., BBo.75). Different feed fonnula treatment had significant effect (P<0.05) in DM, CP, CF for digestibility nutrient, so that different feeding time and the interaction with different feed formula had not significant effect (P>0.05). The value nitrogen retention , nitogen consumption, feces nitrogen and NBP showed that type of feed had significant effect (P<0.05) but feeding time consist of P (morning) and S (evening) bad significant effect (P<0.05) in nitrogen feces and EPN (g kg -, BBo.75).
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Judul: Performa Domba Garut Jantan yang Diberi Pakan Limbah Tauge sebagai Pengganti Rumput Lapang pada Waktu Pemberian yang Berbeda
Abstrak: Research aimed to evaluate the effect of mung bean sprout waste as grass subtitution and different feeding time management (morning and evening) through the performance of Garut lamb in intensive system. About 16 heads of Garut lamb with the average body weight 15.06 ± 2.41 kg were analyzed in 2x2 factorial randomized complete block design. The first factor was different feed formula consist of R1 (consentrate 60% + grass 40%) and R2 (concentrate 40% + mung bean sprout waste 40%). The second factor was different feeding time consist of P (morning) and S (evening). The result of statistic analysis showed that R2 had significant effect (P<0.01) in DMI, CP, and TDN consumption. Different feed formula had significant effect (P<0.01) in ADG, so that the different feeding time and the interaction with different feed formula also had significant effect in ADG (P<0.05). Feed efficiency of R2 was higher (P<0.05) than R1. Mung bean sprout waste had better palatability than grass so that it enhanced the performance of Garut lamb with better feed efficiency.
Keyword: performance., mung bean sprout waste, garut lamb, feeding time

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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