Judul: Evaluation of the Cumulative Morphometric Index of Local Sheep in Pen Block B, Faculty of Animal Science, IPB
Abstrak: Ukuran tubuh ternak dapat dijadikan sebagai penentuan tipe ternak. Indeks merupakan alternatif dalam penilaian ternak sebagai indikator tipe dan fungsi ternak. Penelitian bertujuan untuk mendapatkan nilai evaluasi indeks kumulatif pada domba lokal yaitu domba Priangan dan domba Silangan Garut yang diharapkan dapat digunakan untuk mengetahui nilai tipe ternak berdasarkan nilai kumulatif. Penelitian ini meliputi mengukur morfometrik domba Priangan sebanyak 10 ekor dan domba Silangan Garut sebanyak 7 ekor dengan menggunakan data primer yang diperoleh dari data ukuran-ukuran tubuh (cm) dan bobot badan (kg) yang dikategorikan berdasarkan jenis kelamin. Indeks kumulatif dianalisa sebagai penentuan pola tipe ternak termasuk tipe pedaging atau tipe dwiguna. Peubah yang diukur adalah bobot badan, panjang badan, tinggi badan, tinggi pinggul, lingkar dada, dalam dada, lebar dada, lebar pinggul, dan panjang pinggul. Bedasarkan data yang diperoleh ukuran tubuh domba Priangan betina, domba Priangan jantan, dan domba Silangan Garut betina, domba Priangan betina memiliki bobot badan yang sedikit lebih besar daripada domba Priangan jantan dan domba Silangan Garut. Berdasarkan hasil dan analisis data yang telah dilakasanakan, dapat disimpulkan bahwa nilai cummulative index domba Priangan betina di Kandang B IPB yaitu sebesar 2,62 dan domba tersebut dapat dikategorikan sebagai tipe pedaging.
Keyword: cumulative index, local sheep, morphometric

Judul: Evaluasi Morfologi dan Sistem Indeks Serta Respon Fisiologis Domba Ekor Tipis dan Domba Garut pada Umur dan Ransum yang Berbeda
Abstrak: This paper is concerned of body measurements associated with production characteristics also as indicators of type of sheep. The experiment was conducted at university area on morphology and physiologycal respone (pulse rate, respiration rate, and rectal temperature) in intensive system. Live weight and eight body measurements were taken on 32 local sheep consisted of 16 garut sheep (8 fat lamb and 8 yearling) and 16 javanese thin-tailed sheep sheep (8 fat lamb and 8 yearling). They were divided into two groups and given Indigofera sp. and mung bean waste. The data were recorded every 30 days. The body measurements used were live weight, shoulder width, foreleg length, body length, rump height, rump width, rump length and heart girth. The indices used were weight, height slope, length index, width slope, depth index, foreleg length, balance and cumulative index. The data were analyzed by factorial 2x2 (body measurements) and 2x2x3 (physiologycal respone) with Statistix 8.0. The measured parts were highly correlated. Tested indices showed that both sheep are typical of meat animals. This was shown by the cumulative index, length and balance indices which were 1,66; 0,91; and 0,75 for both breeds. The respective coefficient of variation between breeds indicates the opportunity for improving the breeds through selection. The index results of index system showed that in both sheep had height slope/cumulative index, height slope index/length index and weight index were significantly (P<0.01) correlated. Rectal temperature in the morning was higher than at noon and afternoon. The physiological result showed that there were significant differences (P<0,01) on respiration by time, also rectal temperature and pulse rate by time and breed.
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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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