Judul: Substitusi Konsentrat Dengan Tepung Daun Murbei Dalam Pakan Berbasis Jerami Padi Pada Sapi Peranakan Ongole.
Abstrak: Jerami padi merupakan limbah pertanian yang memiliki potensi cukup besar sebagai pakan ternak ruminansia, namun jerami padi memiliki faktor pembatas yakni rendahnya kadar protein, kalsium dan fosfor, serta tingginya kandungan serat kasar. Karena itu, pemanfaatan jerami padi dalam ransum harus diimbangi dengan penambahan konsentrat untuk mencukupi kebutuhan nutrisi pakan. Ketersediaan bahan penyusun konsentrat saat ini terbatas akibat harga yang tinggi serta persaingannya dengan kebutuhan lain. Oleh sebab itu, perlu dicari bahan pakan alternatif yang dapat menggantikan konsentrat, dimana bahan pengganti tersebut harus berkualitas dan mempunyai produktivitas yang tinggi. Salah satu bahan yang memenuhi kriteria tersebut adalah daun murbei. Tujuan penelitian ini adalah mengkaji kemampuan tepung daun murbei mensubstitusi konsentrat bila dikombinasikan dengan jerami padi sebagai pakan alternatif yang murah, berkualitas, mudah disediakan serta dapat meningkatkan produktivitas sapi potong.
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Judul: Kecernaan Ransum Berbasis Jerami  Padi yang Diberi Tepung Daun Murbei  Sebagai Substitusi Konsentrat Pada  Sapi Peranakan Ongole
Abstrak: Mulberry leaf has a great potential as animal feed because of its high nutrient content. It has 20,4% crude protein, therefore it can be used as substitution for concentrate. The aims of this experience was to study effect of mulberry leaf as substitution of concentrate in PO cattle. This experiment used completely randomize design with 3 treatments and 4 replications. The treatments were P1 (50% rice straw + 50% concentrate/control), P2 (50% rice straw + 25% concentrate+ 25% mulberry leaf), P3 (50% rice straw + 50% mulberry leaf). This experiment was conducted for 2 months with 2 weeks adaptation periode. Variables observed were dry matter digestibility, crude protein digestibility, crude fiber digestibility, extract eter digestibility, and total production of rumen VFA. The data were analyzed by Analysis of Variance, and differences among treatments were tested with Duncan Multiple Range Test. The results showed that mulberry leaf can substitute concentrate at most 50%. The addition of mulberry leaf significantly (P<0.05) increased crude fiber digestibility but decreased crude protein and eter extract digestibility. The mixture between concentrate and mulberry leaf increased dry matter digestibility and the amount of total VFA.
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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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