Judul: Organic Mineral Mixed Suplementation in Feed on Isa Brown Laying Hens Performance and Quality 90-97 Weeks
Abstrak: Penelitian ini bertujuan mengevaluasi suplementasi campuran mineral organik dalam pakan pada ayam petelur . Penelitian menggunakan 1444 ekor ayam. Penelitian ini menggunakan rancangan acak lengkap (RAL) dengan 2 perlakuan dan 11 ulangan. Perlakuan yang digunakan adalah T0 = pakan komersial, dan T1 = pakan komersil + campuran mineral organik. Parameter yang diamati terdiri dari warna kerabang, kekuatan kerabang, ketebalan kerabang, haugh unit, hen day production, konsumsi pakan, bobot telur, dan konversi pakan. Data dianalisis menggunakan uji T. Hasil penelitian berpengaruh nyata meningkatkan hen day production, konversi pakan, konsumsi pakan, warna kerabang, ketebalan kerabang, dan kekuatan kerabang (P <0,05), namun tidak berpengaruh pada bobot telur dan haugh unit (P >0,05). Penerapan suplementasi campuran mineral organik dapat meningkatkan hen day production, konsumsi pakan, konversi pakan, kekuatan kerabang, warna, ketebalan kerabang telur ayam petelur strain Isa Brown, namun belum mampu meningkatkan haugh unit dan bobot telur., This study was aimed to evaluate supplementation of organic mineral mix in feed for Isa Brown hens. The study used 1444 chickens. This study used a completely randomized design (RAL) with 2 treatments and 11 replications. The treatments used were T0 = commercial feed and T1 = commercial feed + organic mineral mixture. Parameters observed consisted of shell color, shell strength, shell thickness, haugh unit, hen day production, feed consumption, egg weight, and feed conversion. Data were analyzed using T test. The results showed that significantly improved hen day production, feed conversion, feed consumption, shell color, shell thickness, and shell strength (P <0,05), but had no effect on egg weight and haugh unit (P >0,05). The application of organic mineral mixture supplementation can increase hen day production, feed consumption, feed conversion, shell strength, color, egg shell thickness of laying hens strain Isa Brown, but has not been able to increase the haugh unit and egg weight.
Keyword: Laying hens final phase of production, Performance

Judul: Organic Mineral Mixed Supplementation In The Feed Of Isa Brown Laying Hens On The Performance And Quality Of Eggs Aged 68-75 Weeks
Abstrak: Penelitian ini dilakukan untuk mengevaluasi suplementasi campuran mineral organik dalam pakan terhadap performa dan kualitas telur ayam Isa brown umur 68-75 minggu. Penelitian ini menggunakan 2033 ayam petelur strain Isa brown berumur 68 minggu sampai 75 minggu. Dalam pengujian kualitas, 24 sampel digunakan. Penelitian ini menggunakan 2 perlakuan dan 12 ulangan. Metode yang digunakan adalah Rancangan Acak Lengkap (RAL) yaitu: T0 (pakan kontrol), dan T1 (pakan kontrol + suplementasi campuran mineral organik). Variabel yang diamati adalah kualitas telur (warna kerabang, kekuatan kerabang, ketebalan kerabang, dan haugh unit) dan performa yang diamati (konsumsi pakan, produksi telur, bobot telur, konversi pakan, dan produksi massa telur). Data dianalisis menggunakan uji paired sample T-test dan uji wilcoxon dengan taraf 5%. Hasil penelitian menunjukkan bahwa suplemen campuran mineral organik berpengaruh nyata (P<0,05) terhadap produksi telur ayam, konversi pakan, produksi massa telur, warna cangkang, ketebalan cangkang, dan kekuatan cangkang, tetapi tidak terdapat perbedaan nyata (P>0,05) terhadap bobot telur, konsumsi pakan, dan haugh unit. Dapat disimpulkan bahwa penggunaan suplementasi campuran mineral organik dapat memberikan hasil yang baik pada performa dan kualitas telur ayam sehingga dapat diaplikasikan., This study was conducted to evaluate organic mineral mixed suplementation In the feed of Isa brown laying hens on the performance and quality of eggs aged 68-75 Weeks. This study used 2033 laying hens strain Isa brown aged 68 weeks to 75 weeks. In quality testing, 24 samples were used. This study used 2 treatments and 12 replications. The method used was Completely Randomized Design (CRD) were: T0 (control feed), and T1 (control feed + organic mineral mixture supplementation). The observed variables were egg quality (shell color, shell strength, shell thickness, and haugh unit) and observed performance (feed consumption, egg production, egg weight, feed conversion, and egg mass production). Data were analyzed using paired sample T-test and wilcoxon test with a level of 5%.The results showed that organic mineral mix supplement had a significant effect (P<0,05) on hen day production, feed conversion, egg mass production, shell color, shell thickness, and shell strength, but there was no significant difference (P>0,05) on feed consumption, egg weight, haugh unit. The results of this study can be concluded that the use of organic mineral mixture supplementation can provide good results on the performance and quality of chicken eggs so that it can be applied.
Keyword: egg quality, laying hen (Isa brown), organic mineral, performance

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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