Judul: Performa Sapi Peranakan Ongole yang Diberi Pakan Tepung Daun Murbei dengan Kombinasi Konsentrat yang Berbeda
Abstrak: The purpose of this experiment was to study the ability of mulberry leave meal addition on concentrates on the digestibility of nutrient and performance of Ongole Grade. This experiment used a randomized block design, with 4 treatments and 4 blocks. Treatments consisted of P1 (native grass and concentrate feed in the form of mulberry leaves meal and concentrate complete), P2 (native grass and concentrate feed in the form of mulberry leaves meal and corn concentrate), P3 (native grass and concentrate feed in the form of mulberry leaves meal and rice bran concentrate), P4 (native grass and concentrate feed in the form of mulberry leaves meal and concentrate tapioca waste). The experiment was conducted for 4 months with the adaptation periods for 2 weeks. Parameters measured were feed consumption, daily body weight gain, feed efficiency, Income Over Feed Cost (IOFC), revenue cost ratio, nutrient digesbility, nitrogen retention, VFA, NH3 and allantoin urine. The results showed that the mulberry leave meal addition on different concentrate did not significantly (P>0.05) affect daily body weight gain, feed consumption, feed efficiency and Income Over Feed Cost (IOFC), but significantly on digestibility of dry matter and organic matter (P<0.05). It is concluded that based on the nutrient digestibility, mulberry leave meal concentrate can be combined with a single concentrate such as corn, cassava waste meal or complete concentrate .
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Judul: Evaluasi Kualitas Protein Pakan Berbasis Jerami Padi Dengan Daun Murbei Sebagai Pengganti Konsentrat Pada Sapi Peranakan Ongole
Abstrak: Rice straw is the predominant dry season feed for cattle, despite its low nutritive value. It is deficient in readily fermentable energy, nitrogen, minerals and vitamins, and cannot provide for optimum microbial growth in the rumen or tissue development of the host. Mulberry belongs to the genus Morus of the family Moraceae. Mulberry (M. alba) foliage, characterized by its high digestibility and good protein content, has great possibilities for use in animal feeding, both for ruminants and for monogastrics. The aim of this experiment was to investigate and evaluate quality of protein content from the ration based on rice straw, which is combinated with mulberry to substitute the concentrate as feed for cattle. The experiment was conducted for 56 days with the adaptation periods for 2 weeks. This experiment used completely randomized design, with 3 treatments and 4 replications. The treatments were P1 as control (50% rice straw + 50% concentrate), P2 (50% rice straw + 25% concentrate + 25% Mulberry leaves), P3 (50% rice straw + 50% Mulberry leaves). This experiment used 217.16 ± 10.53 kg male ongole crossbreed. The variables measured were protein consumption, protein digestibility, nitrogen retention, NH3 concentration, allantoin urine and total VFA concentration. Data were analyzed using analysis of variance (ANOVA) and Duncan Multiple Range Test further tested the significant differences. The cattle given P2 treatment showed the best result for protein consumption (0.96 kg/d) compared to P3 (0.86 kg/d), allantoin urine (1.73 g/d) compared to P1 (2.23 g/d) and total VFA concentration (108.75 mM) compared to P1 (75.33 mM). It can be concluded that quality of mulberry leaves protein can be used to substitute 50% concentrate in the ration as feed protein resources for ruminants especially increasing protein consumption, allantoin urine and total VFA. Keywords: Protein, mulberry, rice straw, cattle
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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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