Judul: Produktivitas Puyuh Petelur Coturnix coturnix japonica yang diberi Tepung Daun Jati (Tectona grandis linn. f.) dalam Ransum.
Abstrak: This experiment was held at Slamet Quail Farm in Sukabumi, and Poultry Nutrition Laboratory, Faculty of Animal Science, Bogor Agricultural University, Bogor, from June to September, 2013. This research aimed to evaluated the effects of tecton leaf as addition in diet of quail. Laying quails aged 6 weeks and 180 heads had body weight average about 165.11±10.53 g were allowed in completely randomized design, that divided into four treatments with three replications. The treatments were classified into : basal diet (P0), basal diet + 3% tecton leaf meal (P1), basal diet + 6% tecton leaf meal (P2), basal diet + 9% tecton leaf meal (P3). Variables were feed intake, egg production, egg weight, egg mass, feed conversion ration and mortatilty. The result of this research showed that tecton leaf meal did not significantly affect on egg production, egg weight, egg mass, and feed conversion, but significantly decreased on feed intake (P<0.05). There was no mortality during this experiment. The addition of tecton leaf meal in ration decreased value of income overfeed cost. Tecton leaf meal supplementation was increased feed cost.
Keyword: tecton leaf meal, quail, income overfeed cost, egg production

Judul: Penambahan Tepung dan Ekstrak Daun Jati (Tectona grandiss Linn. F.) Pada Puyuh coturnix coturnix japonica
Abstrak: Tectone leaf is plant perennial who had the chance very large for use as fodder. The availability and its abundant known was selected as one alternative plant a source of materials local feed. Generally of tecton trees used to be taken wood as major commodity logistics. Hence in the study is done the utilization of waste in the form of tecton leaf meal in diet laying quail. Active ingredients that was found in the leaves of flavonoid tecton namely. A compound phytochemistry is able to inhibit the growth of pathogenic bacteria in the digestive tract so that the absorption of nutrient could be optimal and no mortality on experiment. The supplementation tecton leaf can improve balance the necessary of feed nutrient quails and increase productivity of egg quail. This study aimed to analyze supplementation meal and extract tectone leaf in quails diet on antimicrobial activities such as bacteria pathogen E.coli and S.typhimurium on digestive tract so it could improve the quail performance and egg quality. This research used the laying Japanese quail (Coturnix coturnix japonica) aged 4-12 weeks as many as 180 bird given the supplementation tecton meal in diet and extract tecton leaf in drinking water. A method of research is experiment with design random complete (CRD) consist of six treatments and three replications. Treatments consist of : R0 = commercial rations, R1 = commercial rations + Vitachick, R2 = commercial rations + 6% meal tecton leaf, R3 = commercial rations +6% extract tecton leaf, R4= commercial rations+ 9% meal tecton leaf, R5 = commercial rations + 9% esxtract tecton leaf in drinking water. Parameters observed were feed consumption, water consumption, egg production, egg weight, egg mass, feed conversion, yolk weight and albumin weight, egg yolk colour score, eggshell weight, eggshell thickness, haugh unit, total of colonies bacteria, and analysis of Income Overfeed Cost. The analysis showed that meal tecton leaf proximate containing crude protein 11.01%, crude fat 3.80%, crude fiber 22.01%, and ash 8.11%. Active compound of flavonoid that was found in extract and meal tecton leaf is 0.241% and 0.643%. The result showed that the addition of meal and extract tecton leaf didn’t affect significantly (P>0.05 ) of feed consumption, water consumption, egg production and feed conversion. There was no mortality during this experiment. The addition of meal tecton leaf 6% and 9% could be increase a score of yolk colour to 8 with a yellow color. Supplementation extract tectone leaf 9% to reduce the total bacteria colonies E.coli and S. typhimurium. Flavonoids were able to inhibit the growth of pathogenic bacteria with the concentration of the medium. The conclusion of this research was supplementation 6% tecton leaf was able to increase the egg yolk color score while was able to reduce the total population of the colonies of pathogenic bacteria of the digestive tract quail can be given the addition of 9% extract tecton leaf. The content of flavonoid that serves as the meal contained in the antibacterial meal and extract tecton leaf is 0.643% and 0.24%.
Keyword: antibacterial, flavonoid, productivity, quail, Egg, tecton leaf

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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