Judul: The Effect of Vitamin E (dl-a-Tocopherol Acetate) Suplementation on Performances and Some Characteristic of Rabbit Carcasses
Abstrak: Vitamin merupakan salah satu zat makanan yang mempunyai peranan penting dalam fungsi sel tubuh sehingga penting untuk diperhatikan. Salah satu vitamin yang esensial bagi temak adalah vitamin E, karena tubuh temak tidak dapat mensintesa, sehingga perlu ditambahkan dalam ransum. Untuk mengetahui dan mempelajari (baik langsung maupun tidak langsung) pengaruh penambahan vitamin E (dl-a-Tocopherol Acetate) dalam ransum, maka dilakukan pengamatan terhadap 30 ekor kelinci New Zealand White persilangan lepas sapih dengan melihat penampilan dan beberapa sifat karkasnya., The effect of vitamin E (dl-a-Tocopherol Acetate) supplementation in diets on performances and some characteristic of rabbit carcasses was studied in thirty post weaning female rabbits. The design of the experiment was completely randomized with five treatments and six replications. Five treatments were EO= basal ration (without suplementation dl-a-Tocopherol Acetate), E50= EO + 50 mg dl-a -Tocopherol Acetatelkg diet, E100 = EO + 100 mg dl-a - Tocopherol Acetatelkg diet, E150 = EO + 150 mg dl-a -Tocopherol Acetatelkg diet, and E200 = EO +200 mg dl-a -Tocopherol Acetatelkg dies. All meat from the right side carcasses were separated to determine dry matter (water content), fat (ether exstract), protein, saturated fatty acids and unsaturated fatty acid content.
Keyword: Vitamin E, Rabbit carcasses, Carcass quality, Supplement

Judul: The Effect of Vitamin E and Selenium Supplementation towards the Internal Organ Characteristics of IPB-D2 Chickens during Developer-Layer Period
Abstrak: Penelitian ini bertujuan mengevaluasi pengaruh suplementasi vitamin E dan mineral Se dengan komposisi kebutuhan nutrien yang berbeda terhadap kualitas organ dalam Ayam IPB-D2. Rancangan percobaan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL) Faktorial 2 x 2 (faktor A untuk jenis rasum dan faktor B untuk suplementasi vitamin E sebanyak 100 ppm dan jumLah mineral Se 1 ppm, masing-masing perlakuan diulang sebanyak lima kali. Peubah yang diamati yaitu bobot potong unggas, bobot dan persentase organ dalam ayam IPB-D2 (hati, jantung, empedu, limfa, ginjal, rampela, thimus, bursa, pankreas, dan proventikulus). Data diolah menggunakan uji ANOVA. Hasil penelitian menunjukkan tidak terdapat interaksi antara pemberian jenis ransum berbeda dan suplementasi vitamin E dan mineral Se terhadap persentase bobot organ dalam. Jenis ransum berpengaruh sangat nyata pada kenaikan persentase bobot empedu (P<0,01), namun pemberian suplementasi vitamin E dan Se tidak berpengaruh nyata pada kenaikan bobot organ tersebut. Sedangkan jenis ransum serta suplementasi vitamin E dan Se berpengaruh nyata pada persentase bobot proventikulus (P<0,05)., This study aimed to evaluate the effect of vitamin E and mineral Se supplementation with different compositions of nutrient requirements on the internal organ quality of IPB - D2 Chickens. The experimental design used in this study was a 2 x 2 factorial completely randomized design (CRD) (factor A for the type of ransum and factor B for vitamin E supplementation of 100 ppm and the amount of mineral Se 1 ppm. Each treatment was repeated as much as five times. The variables observed were slaughter weight of poultry, weight and percentage of internal organs of IPB-D2 chickens (liver, heart, bile, spleen, kidney, rampella, thymus, bursa, pancreas, and proventiculus). The data is processed using the ANOVA test. The results showed there was no interaction between giving different types of rations and vitamin E and mineral Se supplementation on the percentage of internal organ weights. Type of rations had a very significant effect on increasing bile weight (P<0.01), but vitamin E and Se supplementation did not significantly affect the increase in the percentage weight of the organ. While the type of ration and vitamin E and Se supplementation are significantly affected proventiculus percentage weight (P<0.05).
Keyword: IPB-D2 Chickens, Internal Organ, Selenium, Vitamin E

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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