Judul: Kandungan Nutrisi dan Asam Lemak Daging Kerbau Rawa dan Sapi Peranakan Ongole yang Digemukkan dengan Suplementasi Campuran Garam Karboksilat Kering
Abstrak: Buffalo is a potential meat producing animal. There is an increasing demand of buffalo meat in Indonesian. The study was aimed to examine the fatty acids composition and chemical characteristic of meat from cattle and buffalo fatten on feedlot ration supplemented by protected lemuru fish oil in the form of dried carboxylate salt mixture (DCM). The research used six swamp buffalo and eight Ongole grade cattle. They were assigned to 2x2 factorial model with two animal species (cattle and buffalo) and two level ration (suplemented and not supplemented ration with dried carboxylate salt).The results of this study showed that swamp buffalo and Peranakan Ongole cattle fatten on feedlot ration using protected lemuru fish oil in the form of DCM, produced meat with similar chemical characteristic. Meanwhile, they were significant interaction between ruminant species and ration on fatty acid composition. In buffaloes the addition of the protected lemuru fish oil could significantly decreased (p<0,05) the saturated fatty acid but significantly (p<0,05) increased the unsaturated fatty acid in meat. However, this was not the case for cattle.
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Judul: Komponen Karkas dan Sifat Fisik Daging Sapi PO dan Kerbau Rawa yang Digemukkan Menggunakan Ransum yang Disuplementasi Campuran Garam Karboksilat Kering
Abstrak: Peranakan Ongole cattle and buffalo are meat producing ruminants commonly found in Indonesia. The study was aimed to examine the carcass yield and meat quality from local cattle and buffalo fattened on feedlot ration supplemented by protected lemuru fish oil in the form of dried carboxylate salt mixture (DCM). They were fattened for approximately 2,5 month. The experiment used six swamp buffalo and eight Peranakan Ongole cattle. The data was analyzed by factorial design with two factor treatment. The first factor was species (cattle and buffalo) and the second factor was ration (supplemented and non supplemented ration with dried carboxylate salt). The result showed that they were no interaction between species and ration on carcass productivity and meat quality characteristics. Carcass productivity and meat quality characteristics were not influenced by ration treatment’s factor. However, bone, tenderness, meat color and fat color were significantly influenced (P<0,05) by species. Buffalo carcass contained less bone compare to Peranakan Ongole carcass. The meat from buffalo was significantly more tender, darker in color, and the fat was lighter in color compare to beef.
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Judul: Solusi Geometri Schwarzschild untuk Dimensi 4+1 dengan Invarian Rotasi Isotropik.
Abstrak: Metrik Schwarzschild merupakan solusi eksak pertama dari persamaan medan Einstein dengan mangasumsikan metrik statik dan simetris. Metrik Schwarzschild yang ditemukan oleh Karl Schwarzschild masih dalam dimensi 3+1, namun seiring dengan teori-teori terbaru yang menunjukkan bahwa alam semesta tidak hanya di dimensi 3+1. Maka melalui penambahan dimensi, tujuan penelitian ini memperoleh solusi pada geometri Schwarzschild untuk dimensi 4+1 dengan memodifikasi koordinat bola yang invarian rotasi isotropik dan melalui penurunan rumus seperti koordinat bola, simbol Christoffel, dan tensor Ricci. Selain mendapatkan solusi ini, metrik Schwarzschild dimensi 4+1 dapat digunakan sebagai metrik dasar untuk memperoleh solusi blackhole dan wormhole pada dimensi 4+1. Hasil akhirnya, dengan memanfaatkan modifikasi koordinat bola, metrik Schwarzschild dapat dibentuk sehingga diperoleh solusi geometri Schwarzschild untuk dimensi 4+1.
Keyword: metrik Schwarzschild, persamaan medan Einstein, modifikasi koordinat bola, penambahan dimensi, invarian rotasi isotropik