Judul: Kecernaan Nutrien pada Kambing Perah yang Diberi Ransum dengan Penambahan Daun Ginseng Jawa (Talinum Paniculatum Gaertn)
Abstrak: An experiment was designed in order to study the nutrients digestibility in dairy goat offered diets containing java jinsom leaf. The research was conducted in a dairy goat barn in Animal Research Center, Ciawi, Bogor from May until July 2012. This study used 9 cross breed dairy goats with average weight of 32.96 ± 3.14 kg. The goats were on the 2nd lactation periode and had an average milk yield of 1 liter/day. The dietary treatments were: G0= forage ad-libitum (3000 g – 4500 g) + concentrate 43% dry matter intake + gliricidia 12% dry matter intake G1= G0 + java jinsomleaf 3% dry matter intake; G2= G0 + java jinsom leaf 6% dry matter intake. The treatment were allocated in a completely randomized design with 3treatments and 3replications. The Parameters measured were feedintake, nutrients digestibility, total digestible nutrient (TDN), and milk yield. The different among treatments tested by Contrast Polynomial Orthogonal. The result showed that treatments did notaffect the parameter observed. Feeding grass adlibitum and concentrate 43% dry matter indicated low quality, but fulfilled protein and fat requirements for maintenance and production of the animal. Feeding java jinsom leaf until 6% dry matter did not increase milk yield of sapera dairy goat offered low quality feed.
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Judul: roduksi dan Kualitas Susu Kambing Sapera yang Diberikan Tambahan Pakan Daun Som Jawa (Talinum paniculatum (Jacq.) Gaertn)
Abstrak: Milk is a food product that has a high nutritional value. The increased of production and quality of goats milk needs to be create a healthy and nutritious products. This research was to observe milk production and its composition of Sapera (PE-Seanen breed) goat given Som Java (Talinum paniculatum (Jacq.) Gaertn) leaves as feed additive. Nine heads of Sapera goats used in this research with milk production about 1 liter/day and 33 kg body weight. The research consist of 3 levels Som Java leaves 0%, 3%, and 6% in 3 replications. The result of this research showed that Som Java leaves as feed additive did not influence on milk productiton, composition, feed level intake, and nutrient eficiency convert to milk composition. Som Java leaves as feed additive increase the body weight as high as Som Jawa given level. Som Java leaves as feed additive cause milk production stable up to nine week of lactation
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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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