Judul: Penambahan Biji Ketumbar (Coriandrum sativum L.) dalam Ransum terhadap Bobot Karkas,.Persentase Potongan Komersial, Lemak Abdominal, dan Kolesterol Karkas Broiler
Abstrak: The consumer recently start to choose selectively broiler carcass, especially for carcass with low fat and cholesterol. Fat and cholesterol from broiler chiken has been known for the negative effect for human health. Coriander seed is known as herbal medicine have containing active material which is able to reduce fat and cholesterol. The research was conducted to determine the effect of the addition of coriander seeds on carcass weight, percentage of commercial cuts, abdominal fat, and carcass cholesterol of broiler. One hundred and twenty (1-day old) commercial broiler chiken (Cobb CP 707) were randomly assigned to four treatments with three replication (ten birds/ pen). The birds were fed experimental diets containing 0% (R0), 1% (R1), 2% (R2), and 3% (R3) coriander seeds respectively. Water and feed were provided ad libitum during five weeks experimental period. There were no significant different on carcass weight (791,67-840,33 g), percentage of commercial cuts: chicken breast (30,55%-33,81%), whole leg (16,08%-17,44%), drumstick (14,95%-16,22%), wing (11,98%-13,31%), back (22,70%-26,57%), and abdominal fat (18,70%-24,64)% in birds fed coriander seed as compared to control diet. Carcass cholesterol (8,71-29,43 mg/ 100 g) of broiler was lower in 3% (R3) coriander seed than other groups.
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Judul: Penggunaan Biji Ketumbar (Coriander sativum Linn) Sangrai Dalam Ransum Terhadap Performa Ayam Broiler
Abstrak: Using antibiotics as a feed additive made residues in broiler’s carcass. If meat’s chicken being consumed, it made some worry about antibiotic resistance, so it should required feed additive non antibiotic which made from the natural materials (herbs), such as coriander. By using natural materials (herbs), made some benefits and advantages as well as being an alternative to antibiotics. Broiler chickens fed diets containing 0%, 2% and 2% roasted coriander with three replications. This research was conducted for five weeks. First week until third week was starter phase and fourth week and fifth week was the finisher phase. Variables observed in this research were body weight, body weight gain, consumption, feed conversion and mortality. The results of research on weight loss phase of starter looks significantly different (P<0.01), and for body weight gain, consumption, and feed conversion were significantly different (P<0.05). For the finisher phase of weight gain and increase body weight looked significantly different (P<0.05) and significantly different (p<0.01), except for consumption and feed conversion did not look significantly different (p>0.01). This result indicated that the addition of 2% toasted coriander seeds can not be used for the finisher phase.
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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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