Judul: Performance Quail (Coturnix coturnix  japonica) Given Drinking Water Containing Sambiloto (Andrographis paniculata)  and Ginger (Zingiber officinale)
Abstrak: Puyuh (Coturnix coturnix japonica) memiliki kelemahan yaitu rentan akan stres yang dapat mengakibatkan penurunan bobot badan dan gangguan pada fungsi reproduksi. Salah satu bahan yang ditambahkan untuk meningkatkan kekebalan tubuh dan produktivitas puyuh adalah sambiloto (Andrographis paniculata) dan jahe (Zingiber officinale). Penelitian ini bertujuan menganalisis performa puyuh yang diberi air minum mengandung ekstrak sambilato dan jahe. Penelitian ini menggunakan puyuh petelur usia 3-5 minggu yang diberi air minum mengandung sambiloto dan jahe dengan konsentrasi 0%, 3%, 6% dan 9%. Variabel yang diamati adalah produksi telur, bobot telur, konsumsi pakan, konversi pakan, konsumsi air minum, bobot hidup puyuh, bobot darah, bobot bulu, bobot jeroan, IOFC (Income Over Feed Cost), dan mortalitas. Puyuh yang diberi jahe dan sambiloto pada air minum tidak menunjukan hasil yang berbeda nyata pada performa puyuh. Hasil penelitian menunjukan bahwa puyuh yang diberi air minum mengandung sambiloto dan jahe berpengaruh nyata (P<0,05) terhadap produksi telur. Penambahan 6% mencapai angka tertinggi pada variabel produksi telur yaitu 46%., Quail (Coturnix coturnix japonica) have disadvantage of being susceptible to stress, which can lead to weight loss and disruption of reproductive function. One of the ingredients added to improve quail immunity and productivity is ginger and sambiloto. This study aimed to analyze the performance of quails fed drinking water containing sambilato (Andrographis paniculata) and ginger (Zingiber officinale) extracts. This study used laying quails aged 3-5 weeks that were given drinking water containing sambiloto and ginger with concentrations of 0%, 3%, 6% and 9%. The observed variables were egg production, egg weight, feed consumption, feed conversion, drinking water consumption, quail live weight before slaughter, blood weight, feather weight, offal weight, IOFC (Income Over Feed Cost), and mortality. Quail given ginger and sambiloto in drinking water did not show significantly different results on quail performance. The results showed that quails fed drinking water containing sambiloto and ginger had a significant effect (P<0.05) on egg production. The addition of 6% reached the highest number on the egg production variable which was 46%.
Keyword: drinking water, ginger, performance, quail, sambiloto

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: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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