Judul: Performa Body Condition Score dan Bobot Badan pada Kelompok Ternak Domba Garut di BPPTD Margawati Garut.
Abstrak: Garut sheep is an indigenous species of Sunda’s land biodiversity which has uniques biological character such as rich carcass. However there is lack of information concerning their performance based on body condition score and body weight on garut sheep. For this challenge, we performed body condition score (BCS) and body weights measurement on 80 animals. The result show that BCS of male sheeps were increased followed by ages and body weights; such as 2 (18,22±1,45 kg) for male lambs, 2 (27,88±3,52 kg) for adolescent males and 3 (45,91±3,84 kg) for rams. BCS of female sheeps were increased followed by ages and body weights; 2,1 (20,71±6,47 kg) for female lambs, 2,5 (26,99±2,14 kg) for null para, and 2,6 (35,05±2,14 kg) for gestating animals, except lactating animals (2,1) and flushing animals (1,9). The phenomenon of mild decreasing BCS on flushing animals could be a biological character or a pathological state of garut sheep. In conclusion, increasing BCS of male and female sheeps followed by ages and body weights and the phenomenon of mild decreasing BCS on lactating and flushing animal suggested that further clinical nutritional improvement should be performed.
Keyword: body condition score, body weight, garut sheep

Judul: Performance and Body Condition Score (BCS) of Garut Ewe Lambs Fed Concentrate with Different Protein and Energy Content
Abstrak: Penelitian ini bertujuan untuk menganalisis pemberian ransum dengan protein dan energi yang berbeda terhadap performa induk domba garut yang dikawinkan dengan domba dorper. Penelitian ini menggunakan 20 ekor domba garut betina berumur 1-2 tahun dengan rataan bobot 36,37±4,04 kg. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) dengan 2 perlakuan dan 2 kelompok. Perlakuan terdiri atas P0=Konsentrat komersial 40% + Rumput BH 60% dengan PK 11% dan TDN 56,74% dan P1=Konsentrat terstandar 40% + Rumput BH 60% dengan PK 14% dan TDN 61,66%. Variabel yang diukur meliputi konsumsi pakan, body condition score (BCS), pertambahan bobot badan (PBB), dan income over feed cost (IOFC). Data dianalisis menggunakan Independent Sample T-Test. Hasil penelitian menunjukkan bahwa pemberian ransum dengan protein 14% berpengaruh nyata (P=0,05) meningkatkan konsumsi ransum dan PBB induk domba pada bulan ke 2 dan 3 setelah pemeliharaan. Selain itu, BCS juga berpengaruh nyata (P=0,05) pada bulan ke 1 dan ke 3 setelah pemeliharaan. Nilai IOFC pada perlakuan konsentrat terstandar menghasilkan keuntungan yang lebih tinggi dibandingkan dengan konsentrat komersial. Dapat disimpulkan bahwa penggunaan konsentrat terstandar yang diberikan pada induk domba garut dapat memperbaiki performa dan IOFC., This study aims to analyze the provision of rations with different proteins and energy on the performance of garut ewes mated with dorper sheep. This study used 20 female garut sheep aged 1-2 years with an average weight of 36.37±4.04 kg. This study used a Randomized Group Design with 2 treatments and 2 groups. Treatments consisted of P0 = 40% commercial concentrate + 60% BH grass with 11% PK and 56,74% TDN and P1 = 40% standardized concentrate + 60% BH grass with 14% PK and 61,66% TDN. Variables measured included feed consumption, body condition score (BCS), body weight gain (BWG), and income over feed cost (IOFC). Data were analyzed using Independent Sample T-Test. The results showed that feeding rations with 14% protein significantly (P=0.05) increased ration consumption and BWG of ewes in the 2nd and 3rd months after maintenance. In addition, BCS also significantly (P=0.05) in the 1st and 3rd month after maintenance. The IOFC value in the standardized concentrate treatment resulted in higher. It can be concluded that the use of standardized concentrates given to garut ewes can improve performance and IOFC.
Keyword: Performance, BCS, Garut Ewes, Standardize Concentrate

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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