Judul: Karakteristik Karkas dan Potongan Komersial Kelinci Rex dan Satin
Abstrak: Rabbit is a small livestock that has potentiality to produce meat as protein source from animal. Rabbit meat is known to have a high protein content with low cholesterol levels. Rex and Satin rabbits are known as dual-purpose, which is producing fur and meat. This study aims to determine the yields of carcass and commercial cuts of Rex and Satin rabbits. Studies were used 12 heads of male Rex and Satin rabbits that were slaughtered at the of more than 6 months. Variables measured were carcass characteristics and commercial cuts. Completely randomized design with treatment factors of breed (Rex and Satin rabbits) with 12 replicates were used in this study. Productivity of carcass and commercial cuts were no different between Rex and Satin rabbits. Slaughter weight, carcass weight and carcass percentage of Rex rabbits were 2 422.00 ± 256.40 g/head, 1 293.17 ± 190.55 g/head and 53.25% ± 3.60%, respectively, and Satin rabbits were 2 784.17 ± 381.25 g/head, 1 511.17 ± 181.51 g/head and 54.42% ± 2.20%, respectilely. The results of this research showed that the rabbit breed had a significant difference (P<0.05) to the weight of rabbit skin.
Keyword: Satin, Rex, rabbit, commercial cut, carcass

Judul: Body Weight Estimation of Rexsi-Agrinak and Satin Rabbits Using Principal Component Regression Analysis
Abstrak: Kelinci adalah ternak pseudo-ruminansia dengan produktivitas tinggi yang dapat dijadikan sebagai ternak penghasil daging, penghasil fur, atau dijadikan sebagai hewan hias. Kelinci rexsi-agrinak merupakan kelinci hasil pemuliaan kelinci rex yang dilakukan oleh Balai Penelitian Ternak (Balitnak). Penelitian ini bertujuan menentukan variabel permukaan tubuh linear yang paling berpengaruh terhadap bobot badan pada kelinci rexsi-agrinak dan satin serta membuat persamaan pendugaan bobot badan melalui analisis regresi komponen utama. Penelitian ini menggunakan 40 ekor kelinci rexsi-agrinak dan 39 ekor kelinci satin. Variabel-variabel yang diukur yaitu lingkar dada (X1), dalam dada (X2), lebar dada (X3), panjang radius ulna (X4), panjang humerus (X5), panjang femur (X6), panjang tibia (X7), panjang punggung (X8), lebar panggul (X9), dan lingkar kanon (X10). Elastisitas digunakan untuk mengukur variabel yang paling berpengaruh terhadap bobot badan kelinci rexsi-agrinak dan satin. Lingkar dada (X9) merupakan variabel yang paling berpengaruh terhadap bobot badan kelinci rexsi-agrinak dan satin. Semua variabel yang diamati berpengaruh nyata terdahap bobot badan sehingga persamaan pendugaan bobot badan memasukkan semua variabel., Rabbits are pseudo-ruminants that have high productivity that can be kept as meat producer, fur producer or ornamental animals. rexsi-agrinak rabbit is the result of rex rabbit breeding by the Indonesian Research for Animal Production, Livestock Research and Development Center, Agricultural Research and Development Agency, Ministry of Agriculture. This study aims to determine the linear body surface variable that has the most influence on body weight in rexsi-agrinak and Satin rabbit breeds also to determine bodyweight estimation equation by using principal component analysis. This study uses 40 rexsi-agrinak rabbits and 39 satin rabbits. Variables measured in this study are chest circumference (X1), chest (X2), chest width (X3), radius ulna length (X4), humerus length (X5), femur length (X6), tibia length (X7), back length (X8), hip width (X9), and canon circumference (X10). Elasticity is used to measure variable that has the most influence on rexsi agrinak and satin rabbits bodyweight. Chest circumference (X9) is the variable that most affects the body weight of rexsi-agrinak and satin rabbits. All the variables have a real impact to bodyweight so that bodyweight estimation equations include all variables.
Keyword: analisis regresi komponen utama, pendugaan bobot badan, rexsi-agrinak, satin, bodyweight estimation, principal component regression analysis

Judul: Formulasi Hamiltonian untuk Menggambarkan Gerak Gelombang Soliter Dimensi Tiga di Permukaan Laut
Abstrak: Gelombang permukaan adalah gelombang yang terjadi perbedaan rapat massa antara air dan udara. Salah satu gelombang permukaan yang ditinjau adalah gelombang soliter. Formulasi gelombang soliter dilakukan dengan menggunakan formulasi Hamiltonian.
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