Judul: Karakteristik Fermentasi Rumen dan Performa Domba Teradaptasi yang Diberi Pakan Silase Daun Singkong (Manihot esculenta sp.) dengan Taraf Berbeda
Abstrak: This experiment aimed to study the effect of provision of cassava leaves silage (CLS) as substitution for concentrate on rumen fermentation characteristics and performance of Javanesse Thin Tail Sheep. The experimental design used was block randomized design (4x4) using 16 male sheep of nine months old with body weight of 15.36 ± 2.59 kg and they were placed in the individual metabolic cage. The treatments were T0 (100% of napier grass), T1 (60% napier grass + 40% concentrate), T2 (60% napier grass + 20% concentrate + 20% CLS), and T3 (60% napier grass + 40% CLS). The results showed that provision of cassava leaves silage in the rations decreased (P<0.05) nutrient digestibility but increased (P<0.05) energy and protein consumption and rumen fermentability. Provision of CLS at level 20% (T2) had average daily gain, EPP, and IOFC similar to those of 40% concentrate treatment (T1). Provision of CLS at level 40% (T3) had average daily gain, EPP, and IOFC significantly lower (P<0.05) than those of 20% CLS and 40% concentrate treatment. It is concluded that CLS can be given at level of 20% of total ration which is equal to 50% concentrate. Feeding sheep only with napier grass do not fulfill their nutrient requirement for proper growth.
Keyword: Sheep, Rumen Fermentation Characteristics, Performance, Cassava Leaves Silage

Judul: Efek Penambahan Cassabio dalam Ransum terhadap Performa Anak Domba Lokal
Abstrak: Cassava pulp isone of the tapioca industry by-product that can be used as animal feed. However, the quality of cassava pulp is relatively low due to its low protein and high crude fiber content. Cassava pulp with addition of zeolite, urea, ammonium sulphate, that fermented by Aspergillus niger produced the product that called cassabio. The experiment of using cassabio on broiler have been done. However, there is no experiment of using cassabio on performance of ruminants. The objective of this research is to evaluate the effect of levels cassabio in concentrate on performance of local lamb. The experiments design was randomized block design with four treatments and three replications, and local lambs were used as replications. The treatments were addition levels of cassabio into concentrate at levels of 0% (P0), 20% (P1), 40% (P2), and 60% (P3). Variables that measured were feed consumption, average body weight gain, and feed efficiency. Data were analysed by analysis of variance (ANOVA)and differences among treatments were determined by Duncan test. The result showed that the cassabio levels P0, P1, P2, dan P3 for BWG was76.19; 81.43; 84.29; and 96.90 g head-1 day-1respectively; for intake was 444.34; 463.13; 483.03 and 493.52 g head-1 day-1respectively; feed efficiency was 0.17; 0.18; 0.17; and 0.20 respectively. The conclusion of the research was using cassabio up to 60% (P3) in concentrate produced the good results without negative effect on local lamb performance.
Keyword: 

Judul: Orbit elektron dan probabilitas level energi sistem chaotic atom hidrogen
Abstrak: a. Mendapatkan orbit elektron sistem chaotic atom hidrogen (dalam koordinat semiparabolik). b. Mendapatkan probabilitas dua level energi yang berdekatan dari sistem chaotic atom hidrogen.
Keyword: Atom, Orbit Elektron