Judul: Persentase Karkas, Dada, Paha dan Lemak Abdomen Itik Cihateup Jantan Umur 10 Minggu yang Diberi Tepung Daun Beluntas, Vitamin C dan E dalam Pakan
Abstrak: Duck is one of poultry that needs to be improved in production of eggs and meat. The purpose of this study was to investigate the effect of feeding beluntas leaf powder, vitamin C and vitamin E on percentage of carcass, breast, thigh and abdominal fat of male Cihateup ducks. The diet treatments were commercial diet as control (K), commercial diet + beluntas leaf meal 0,5% (KB), commercial diet+beluntas leaf meal 0,5%+250 mg vitamin C (KBC), commercial diet + beluntas meal 0,5% + 400 mg vitamin E (KBE). Ninety six ducks were used in this research and were reared from DOD up to 10 weeks of old. The research was conducted at Department of Poultry Production Faculty of Animal Science Bogor Agricultural University. The experimental design used was randomized block design with four treatments and three replications. The results showed that feeding beluntas leaf powder 0,5% significantly decreased (P<0,05) percentage of breast. Feeding control, control + 0,5% beluntas leaf powder + vitamin C 250 mg/kg and control + 0,5% beluntas leaf meal + vitamin E 400 IU did not affect the parameters observed. The conclusion of this study was that feeding beluntas leaf, vitamin C or vitamin E did not affect to carcass, thigh and abdominal fat.
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Judul: Performa itik Cihateup jantan umur 10 minggu yang diberi tepung daun beluntas, vitamin C dan vitamin E dalam ransum
Abstrak: Male duck is potential as meat producer, but the ducks meat off-odor limited the consumers preference. Reducing off-odor has success with supplementation beluntas 1% in feed. However the feed conversion were higher than control. To improve feed conversion, using beluntas reduced 0,5%. To covered deficient antioxidant, try added vitamin C and E.The purpose of this research was to study the effect of feeding beluntas leaf meal, vitamin C and vitamin E in improving ducks performances (feed intake, body weight, body weight gain and feed conversion). The diet treatments were commercial diet as control (K), commercial diet+beluntas leaf meal 0.5% (KB), commercial diet+beluntas leaf meal 0.5%+250 mg C vitamin (KBC), commercial diet+beluntas meal 0,5%+400 IU E vitamin (KBE). Ninety six ducks were used for this research and divided into four treatments and three replications. The ducks were reared from one week up to 10 weeks of old. The parameter measured were feed intake, body weight, body weight gain and feed conversion. The results showed that feed intake did not affect. While final body weight and body weight gain of duck feeding beluntas leaf meal 0.5%+vitamin E 400 IU highest obtainable was the best feed conversion.
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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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