Judul: Respon Fisiologis dan Tingkah Laku Domba Garut Jantan dengan Pakan dan Manajemen Pemberian Pakan Berbeda
Abstrak: Improving feeding and managament for sheep it is normally because of improving their performance. Thereby it can be effected to their physiological response and behaviour. This research aimed to compare physiological response and behaviour of garut rams with feed and different management feeding. This research used 16 garut rams (I0) with 2 factors and 4 replicates. First factors is type of feed R1 (40 % grass + 60% concentrate 1) dan R2 (40% mung bean sprout waste + 60% concentrate 2) and the second factors is management feeding in the morning (P) and management feeding in the afternoon (S). Physiological response were observed such as respiration, heart rate, and rectal temperatures. Behaviour were observed such as ingestive behaviour, licking and biteing other goods, resting, eliminasi, vokalisasi, and agonistic. Physiological response and behaviour data were analyzed by analysis of variance (ANOVA). The result shows that heart rate effected by feed. Sheep which is given feeding mung bean sprout waste have a higher value on heart rate (P<0.01). Rectal temperature efected by feed and management. Sheep which is given feeding mung bean sprout waste (P<0.01) and management feeding in the afternoon (P<0.05) have a higher value on rectal temperatures. Management feeding factors in morning of measuring ingestive behaviour have a higher value (P<0.05) but for resting behaviour, management feeding factors in the afternoon have a higher value (P<0.01). The grass have a higher value for eliminative in daylight periode (P<0.05). Both of factors were not significantly different (P>0.05) for measuring all of behaviour garut rams in the allnight periode.
Keyword: physiological response, garut rams

Judul: Respon Fisiologis dan Tingkah Laku Domba Garut dengan Pakan Limbah Tauge atau Kangkung Kering sebagai Pengganti Rumput
Abstrak: Garut sheep is commonly reared in West Java and usually fed with grass as the main feed and energy source. However, this grass has low quality and seasonally available, therefore should be an alternative feed such as mung bean sprout waste and dried kangkung. This research aimed to study sheep physiology and behavior as a response to diet and environment. This research used nine garut sheep (I0) with three treatments and replicates. The treatments were P0 (50% grass+50% consentrate), P1 (50% mung bean sprout waste+50% concentrate) and P2 (50% dried kangkung+50% concentrate). Physiological response data were analyzed by analysis of variance (ANOVA) and tested by Tukey post test method, while behavior frequency data were analyzed by Kruskal-Wallis test. Result showed that diet treatment did not affect (P>0.05) the heart and respiration rate, but significantly affected (P<0.05) on rectal temperature. All behaviors parameters were not significantly different (P>0.05) except for resting, grooming, licking strange object, and locomotion were higher in P1 than P0 and P2.
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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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