Judul: Penerapan good farming practices sapi penggemukan di PT lembu jantan perkasa Serang-Banten
Abstrak: Good farming practice (GFP) is a guidline for good beef cattle raising in order to improve the existing cattle fattening operation. The scope of GFP in beef cattle farming includes four aspects: facilities, production processes, environmental protection and supervision. PT Lembu Jantan Perkasa is one of beef cattle company engaged in breeding, fattening and cattle trading. The application of GFP becomes very important for these companies to produce environmentally freindly beef cattle with high productivity. In general PT Lembu Jantan Perkasa has a play well four aspect: facilities, production processes, environmental protection and supervision. As a results the beef cattle has performance very well in feedlot as indicated by high daily gain: steer 1,67 kg/day, bull 1,48 kg/day, heifer 1,36 kg/day in 2010. These were several aspect need to be consider in order to improve the implementation GFP. Those include: site plant building and biosecurity.
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Judul: Evaluasi Penerapan Good Farming Practice pada Peternakan Rakyat dan Perusahaan Peternakan di Lampung Tengah
Abstrak: Sapi potong merupakan ternak penghasil daging yang berperan penting dalam pemenuhan kebutuhan protein hewani. Kabupaten Lampung Tengah memiliki potensi pengembangan sapi potong. Potensi tersebut semakin meningkat saat peternak rakyat dan perusahaan peternakan sapi potong melaksanakan budidaya yang baik sehingga diperlukan pedoman beternak yang baik. Penelitian ini bertujuan mengevaluasi penerapan Good Farming Practice (GFP) pada peternakan rakyat dan perusahaan peternakan di Lampung Tengah serta dampaknya terhadap produktivitas sapi potong. Metode penelitian ini menggunakan analisis deskriptif. Peubah yang diamati meliputi pembibitan dan reproduksi, pakan, pengelolaan, kandang dan peralatan, serta kesejahteraan ternak. Hasil evaluasi penerapan GFP menunjukkan nilai rataan 2,74 (cukup baik) untuk peternakan rakyat dan 3,90 (baik) untuk perusahaan peternakan. Perlu adanya peningkatan pada beberapa aspek agar nilai GFP meningkat., Cattle are important livestock for providing meat and fulfilling the need for animal protein. Central lampung district has potential for beef cattle development. Such potential is improved when native farmer and cattle farm company perform good farming practice so that good raising guidelines are needed. The study aims to evaluate the application of Good Farming Practice (GFP) on native farmer and cattle farm company and its effect on the productivity of the cattle. This method of research uses descriptive analysis. Observed hatchlings include breeding and reproduction, food, management, housing and equipment, and the animal welfare. The results of the evaluation of the implementation of GFP showed an average value of 2.74 (good enough) for the native farmer and 3.90 (good) for the cattle farm company. Improvements are needed in several aspects so the value of GFP could increase.
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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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