Judul: Performance of Grower Period Quail with Addition of Propolis as Feed Additive
Abstrak: Puyuh merupakan salah satu jenis unggas potensial yang telah banyak dibudidayakan di Indonesia. Penelitian ini bertujuan mengkaji dan menganalisis penggunaan propolis sebagai feed additive terhadap performa puyuh periode grower (konsumsi pakan, pertambahan bobot badan, konversi pakan, mortalitas) dan mengetahui gambaran ekonomi dengan menghitung nilai income over feed and quail cost (IOFQC). Penelitian menggunakan 90 ekor puyuh periode grower yang diamati dari umur 21 sampai 42 hari. Metode penelitian menggunakan rancangan acak lengkap (RAL) terdiri dari 3 taraf perlakuan yaitu P0 (tanpa penambahan propolis), P1 (penambahan propolis 0,25 mL L-1), dan P2 (penambahan propolis 0,5 mL L-1). Data yang diperoleh dianalisis menggunakan analisis ragam (Anova) dan deskriptif. Hasil penelitian menunjukkan penambahan propolis sebagai feed additive pada puyuh periode grower tidak berpengaruh nyata terhadap konsumsi pakan, konsumsi air minum, dan konversi pakan. Pemberian propolis pada taraf 0,25 mL L-1 memberikan hasil terbaik berdasarkan pertambahan bobot badan, mortalitas, dan IOFQC.
Keyword: feed additive, performa produksi, propolis, puyuh

Judul: Evaluation of Vitamin D3 Supplementation in Diet on Quail (Coturnix coturnix japonica) Production Performance
Abstrak: Penurunan performa produksi pada puyuh akan berdampak secara ekonomis pada peternak. Rekayasa nutrisi pakan menggunakan vitamin D3 merupakan salah satu solusi yang dapat dilakukan untuk mengatasi masalah tersebut. Penelitian ini bertujuan mengevaluasi suplementasi vitamin D3 dalam ransum terhadap performa produksi puyuh. Ternak sebanyak 450 ekor dipelihara dari umur 22-27 minggu. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan 3 perlakuan dan 5 ulangan, setiap ulangan menggunakan 30 ekor puyuh. Perlakuan terdiri atas P0 = ransum kontrol, P1 = ransum kontrol + vitamin D3 1,0 g kg-1 ransum, dan P2 = ransum kontrol + vitamin D3 1,5 g kg-1 ransum. Peubah yang diamati yaitu konsumsi pakan, quail day production (QDP), bobot telur, produksi massa telur, efisiensi pakan, mortalitas, dan income over feed cost (IOFC). Data dianalisis dengan sidik ragam (ANOVA) dan uji lanjut Duncan menggunakan SPSS 25 untuk hasil yang berpengaruh nyata. Hasil penelitian menunjukkan suplementasi vitamin D3 dengan dosis 1,5 g kg-1 ransum berpengaruh nyata (P<0,05) meningkatkan QDP, produksi massa telur, dan efisiensi pakan. Dapat disimpulkan bahwa vitamin D3 pada dosis 1,5 g kg-1 ransum dapat meningkatkan performa produksi puyuh., A decrease in laying quail performance will have an economic impact to the farmers. Modification in feed nutrition using vitamin D3 is one of the solution that can be done to overcome this problem. This study aimed to evaluate the supplementation of vitamin D3 in diet on quail production performance. A total of 450 quails were kept from age 22-27 weeks. This study used a Completely Randomized Design (CRD) with 3 treatments and 5 replications, each replication used 30 quails. The treatment diets consisted of P0 = control diet, P1 = control diet + vitamin D3 1.0 g kg-1 diet, and P2 = control diet + vitamin D3 1.5 g kg-1 diet. The variables observed were feed consumption, quail day production (QDP), egg weight, egg mass, feed efficiency, mortality and income over feed cost (IOFC). Data were analyzed using ANOVA and treatment that differed significantly were further tested with Duncan’s Test using SPSS 25 software. The results showed that the supplementation of vitamin D3 with dose 1.5 g kg-1 diet significantly (P<0.05) increased QDP, egg mass, and feed efficiency. It can be concluded that vitamin D3 at dose 1.5 g kg-1 diet can increase the quail production performance.
Keyword: performa produksi, puyuh, Vitamin D3

Judul: Persamaan Korteweg-de Vries Orde Tinggi untuk Menggambarkan Gerak Gelombang Internal
Abstrak: The ocean can be considered of layers of fluid that each layer has a constant density. Internal waves are waves occur in the interface of every'two layers with different density. Because it occures underneath the surface of the ocean, it is invisible. One of internal waves is internal solitary waves. One of formulation that can describe intemal waves movement is KdV equation. KdV equation is derived from governing equations of ideal fluid in Lagrange formulation using asymptotic method. On this thesis, KdV equation is derived in higher order and then its solution is derived by using internal solitary waves assumption. An example of a two-layer fluid is a case will be used. By using Mathematica6 software, for this case will be obtained the coefficients in lower and higher order explicitly and the corresponding between coefficients and relative lower layer depths and fluid depths, the corresponding between coefficients and relative densities, and also observed the different between solitary waves in lower and higher order.
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