Judul: Efektivitas Penggunaan Biji Ketumbar (Coriandrum sativum Linn) Mentah dan Sangrai dalam Ransum Terhadap Profil Darah Ayam Broiler
Abstrak: This study aimed to analyzed coriander seeds and roasted coriander on blood profiles of broilers. This study used 90 chickens DOC ( CP Cobb 707 ) were maintained for 5 weeks. Treatment diet were used in this study is the diet without coriander seeds ( R0 ), diet with the addition of 2% coriander seeds raw ( R1 ), and the addition of 2% diet with toasted coriander seeds ( R2 ) . Diets and drinking water given ad libitum. The experimental design used was completely randomized design ( CRD ) with 3 treatments and 3 replications, each replication consisted of 10 animals. The results showed the use of raw coriander seeds ( R1 ) and roasted coriander seeds ( R2 ) with a level of 2% in the diet did not affect on the percentage of hematocrit, hemoglobin, erythrocytes, and leukocytes in the blood of broiler chickens.
Keyword: Bogor Agricultural University (IPB), toasted coriander seeds, raw coriander seeds, broiler chickens, blood profiles

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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