Judul: Performa Kerbau Rawa dan Sapi Peranakan Ongole yang Digemukkan Secara Feedlot Menggunakan Ransum yang Disuplementasi Minyak Ikan Lemuru Terproteksi
Abstrak: The study was aimed to examine the performance of local cattle and buffalo fattened in feedlot which using ration suplemented by protected Lemuru fish oil in the form of dried carboxylate salt mixture (DCM). Eight onggole grade cattle and six local swamp buffalo were used in this study. They were assigned to 2x2 factorial model with two level animal class (cattle and buffalo) and two level ration (suplemened and non suplemened ration with dried carboxylate salt). The results of this study showed that the feed consumption, nutrient intake, and daily gain were not affected by the interaction between animal class and ration. The feed consumption, nutrient intake, and daily gain of the buffaloes had significantly higher (P<0,05) than Peranakan Ongole cattle. However, the feed convertion and income over feed cost were not influenced by animal class and ration or their interaction effects. It was concluded that at similar maturity the local buffalo performed better than local cattle (PO) when fattened in feedlot.
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Judul: Perdagingan dan Distribusi Daging Kerbau Rawa dan Sapi Peranakan Ongole yang Digemukkan Menggunakan Ransum dengan Suplementasi Campuran Garam Karboksilat Kering
Abstrak: Swamp buffalo is commonly regarded as an animal with relatively low productivity. The objective of the study was to examine the meat yield and it’s distribution within carcass from Swamp buffalo and Ongole Grade cattle fed concentrate containing protected lemuru fish oil in the form of dry carboxylate salt mixture (DCM). Fourteen animal were used in the study comparising eight Ongole Grade cattle and six Swamp buffalo. Each group of animal was allotted to control ration and control ration plus DCM. They were set up in a factorial design with species and ration as the factors. The result showed that administration of protected lemuru fish oil in the ration did not obviously influence meat yield and each distribution carcass. However Swamp buffalo had significantly higher slaughter weight but lower carcass weight (P<0,05). The Swamp buffalo carcass yield were significantly lower weight of striploin, tenderloin, silverside and topside if compared to Ongole Grade cattle.
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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