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: Utilization of Coconut Shell Liquid Smoke in Quail Performance Grower Period
Abstrak: Pemberian antioksidan dari asap cair tempurung kelapa dapat mengatasi stres oksidatif pada puyuh. Penelitian ini bertujuan menganalisis penggunaan asap cair tempurung kelapa (ACTK) terhadap performa puyuh (Coturnix coturnix japonica) periode grower. Metode penelitian menggunakan rancangan acak lengkap (RAL) terdiri dari 5 taraf perlakuan dengan 3 ulangan yaitu P0 (kontrol), P1 (0,25 mL/L ACTK), P2 (0,50 mL/L ACTK), P3 (0,75 mL/L ACTK) dan P4 (1 mL/L ACTK). Variabel yang diukur meliputi bobot badan awal, bobot badan akhir, pertambahan bobot badan, konsumsi pakan, konsumsi minum, feed conversion ratio (FCR), morbiditas, mortalitas dan income over feed quail cost (IOFQC). Hasil penelitian menunjukkan pemberian ACTK tidak nyata berpengaruh (P>0,05) terhadap konsumsi pakan, konsumsi air minum dan pertambahan bobot badan. Tingkat morbiditas dan mortalitas pada penelitian ini 0%. Nilai FCR terbaik diperoleh P4 (4,28). Nilai IOFQC tertinggi pada P4 (Rp 1.578,92). Kesimpulan penelitian ini adalah pemberian asap cair tempurung kelapa pada puyuh betina periode grower melalui air minum dengan taraf yang berbeda tidak nyata berpengaruh terhadap konsumsi pakan, konsumsi air minum dan pertambahan bobot badan. Dosis 1 mL/L air minum (P4) asap cair tempurung kelapa menghasilkan nilai FCR dan IOFQC terbaik., Giving antioxidants from coconut shell liquid smoke can overcome oxidative stress in quail. This study aims to analyze the effect of coconut shell liquid smoke (ACTK) on the performance of quail (Coturnix coturnix japonica) in the grower period. The research method used a completely randomized design (CRD) consisting of 5 treatment levels with 3 replications, namely P0 (control), P1 (0.25 mL/L ACTK), P2 (0.50 mL/L ACTK), P3 (0.75 mL/L ACTK) and P4 (1 mL/L ACTK). Variables measured included initial body weight, final body weight, body weight gain, feed intake, water intake, feed conversion ratio (FCR), morbidity, mortality and income over feed quail cost (IOFQC). The results showed that giving ACTK had no significant effect (P>0.05) on feed intake, water intake and body weight gain. The morbidity and mortality rates in this study were 0%. The best FCR value was obtained at P4 (4.28). The highest IOFQC value was at P4 (Rp 1,578.92). The conclusion of this study is that giving coconut shell liquid smoke to female quails in the grower period through drinking water at different levels had no significant effect on feed intake, water intake and body weight gain. A dose of 1 mL/L of drinking water (P4) of coconut shell liquid smoke produced the best FCR and IOFQC values.
Keyword: antioxidants, coconut shell, liquid smoke, quail

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.
Keyword: