Judul: Business Model for the Downstream of Beef Cattle Feed Innovation (Fedtogrow) at Sekolah Peternakan Rakyat in Central Lampung
Abstrak: Permintaan daging sapi belum diikuti dengan peningkatan produktivitas ternak sapi potong. Salah satu permasalahan dalam sektor peternakan yaitu kurangnya penguasaan teknologi dikarenakan hasil penelitian tidak sampai tahap komersialisasi ke masyarakat. Dalam upaya memajukan peternakan sapi di Lampung Tengah, IPB University membawa suatu inovasi pakan yaitu Fedtogrow yang merupakan campuran pakan konsentrat dengan senyawa katuk depolarisasi (Katulac) sebagai feed additive, melalui suatu kelembagaan Sekolah Peternakan Rakyat (SPR). Penelitian ini bertujuan untuk menganalisis kondisi internal dan eksternal pada hilirisasi Fedtogrow, merumuskan strategi pengembangan, merancang model bisnis, dan menganalisis dampak Fedtogrow terhadap produktivitas usaha ternak sapi potong. Metode analisis data yang digunakan adalah analisis deskriptif menggunakan matriks internal-eksternal dan matriks SWOT, serta dilakukan analisis produktivitas ternak sapi potong. Hasil penelitian menunjukkan bahwa Hilirisasi Fedtogrow berada pada posisi growth and build sehingga bisa digunakan strategi integratif dan intensif. Penambahan biaya pakan Fedtogrow diikuti peningkatan keuntungan dari penambahan bobot badan sapi potong, sehingga dapat dikatakan produktivitas peternak meningkat., The demand for beef has not been followed by the increase in beef cattle productivity. One of the issues in the livestock sector is the lack of mastery of technology because the research results have not reached the commercialization stage for the public. To advance cattle farming in Central Lampung, IPB University brought a feed innovation, Fedtogrow, a mixture of concentrate feed with a depolarized katuk compound (Katulac) as a feed additive, through an institution called Sekolah Peternakan Rakyat (SPR). This study aims to analyze the internal and external conditions of Fedtogrow downstream, formulate a development strategy, design a business model, and analyze the impact of Fedtogrow on beef cattle business productivity. The data analysis method that was used is a descriptive analysis using an internal-external matrix, SWOT matrix, and beef cattle productivity analysis. The results showed that Fedtogrow downstream is in a growth and build position so that integrative and intensive strategies can be used. The increase in Fedtogrow feed costs is followed by an increase in profits from the additional weight of beef cattle, therefore, it can be said that farmers’ productivity has increased.
Keyword: Fedtogrow, Hilirisasi Inovasi, Pakan, SPR, Strategi

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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