Judul: Evaluation of Beef Cattle Breeding Management from Livestock Aid Grants
Abstrak: Upaya pengembangan sapi potong dalam rangka peningkatan produksi hasil peternakan dilaksanakan oleh Dinas Peternakan dan Kesehatan Hewan Kabupaten Pesisir Selatan melalui program bantuan ternak sapi potong yang diberikan pada kelompok ternak dengan tujuan untuk meningkatkan hasil ternak sehingga dapat meningkatkan pendapatan peternak. Penelitian ini bertujuan mengevaluasi penerapan manajemen pemeliharaan yang baik sesuai dengan standar GFP pada kelompok ternak penerima bantuan. Metode yang digunakan adalah wawancara dan observasi. Kuesioner meliputi pengetahuan reproduksi, manajemen pakan, tatalaksana pemeliharaan, kesehatan dan penyakit serta perkandangan. Dampak penerapan manajemen pemeliharaan diamati berdasarkan BCS sapi potong. Responden penelitian adalah 10 orang anggota kelompok ternak Pincuran Boga Sakato dan 15 orang anggota kelompok ternak Padang Dama II. Data dianalisis menggunakan metode analisis deskriptif. Hasil penelitian penerapan manajemen pemeliharaan pada kedua kelompok ternak mendapatkan kategori kurang, dengan persentase Pincuran Boga Sakato sebesar (49,95%) dan Padang Dama II (54,86%) Penerapan aspek yang perlu mendapat perhatian adalah pengetahuan reproduksi, tatalaksana pemeliharaan serta kesehatan dan penyakit ternak. Secara keseluruhan performa sapi di kelompok Padang Dama II lebih baik dari pada di kelompok Pincuran Boga Sakato., The efforts to develop beef cattle in order to increase livestock production are carried out by the Department of Animal Husbandry and Animal Health of Pesisir Selatan Regency through a beef cattle grant program to farmers groups with the aim of increasing livestock yields so as to increase farmer income. This study aims to evaluate the implementation of beef cattle management in accordance with GFP standards in groups of farmers. The method used consists of interview and observation. The questionnaire includes knowledge of reproduction, feed management, maintenance management, health and disease and housing. The impact of the implementation beef cattle management was observed based on the BCS of beef cattle. Research respondents were 10 members of the Pincuran Boga Sakato farmers group and 15 members of the Padang Dama II farmers group. Data were analyzed using method. The result of the study on the application of beef cattle management to both group of farmers were categorised in the less category (<60%), the percentage of Pincuran Boga Sakato (49,95%) and Padang Dama II (54,86%) The application of aspects that need attention is the knowledge of reproduction, maintenance management and health and disease of livestock. Overall, the performance of the beef cattle management in Padang Dama II farmers group was better than in the Pincuran Boga Sakato farmers group.
Keyword: beef cattle, breeding management, grant program

Judul: Evaluasi Penerapan Good Farming Practice pada Peternakan  Rakyat Sapi Potong di Situ Bolang Indramayu
Abstrak: Produktivitas ternak sapi potong domestik belum cukup untuk memenuhi kebutuhan dalam negeri. Sebanyak 90% peternakan sapi di Indonesia dikelola secara tradisional. Penelitian bertujuan mengevaluasi pengelolaan peternakan sapi potong di Peternakan Situ Bolang sesuai Peraturan Menteri Pertanian Republik Indonesia Nomor 46/Permentan/PK.210/8/2015 tentang Good Farming Practice untuk Sapi Potong. Penelitian menggunakan analisis deskriptif kualitatif wawancara kepada 33 responden menggunakan kuesioner dan pengamatan secara langsung. Hasil penelitian dapat dilihat dari nilai aspek Good Farming Practice yaitu pembibitan dan reproduksi, manajemen pakan, tata laksana pemeliharaan, perkandangan, dan kesejahteraan ternak. Penerapan GFP oleh peternak rakyat di Situbolang Indramayu mendapatkan nilai 2,05 tergolong dalam kategori sangat kurang., Domestic beef cattle productivity is not sufficient to meet domestic demand. As many as 90% of cattle farms in Indonesia are managed traditionally. The study aimed to evaluate the management of beef cattle farming in Situ Bolang Farm according to the Regulation of the Minister of Agriculture of the Republic of Indonesia Number 46/Permentan/PK.210/8/2015 about Good Farming Practice for Beef Cattle. The study used descriptive qualitative analysis of interviews with 33 respondents using questionnaires and direct observation. The results of the study can be seen from the value of aspects of breeding and reproduction, feed management, rearing procedures, cowshed, and animal welfare. Implementation of GFP by smallholder farmers in Situbolang Indramayu received a score of 2.05, which is classified as very lacking.
Keyword: beef catle, community farm, good farming practice

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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