Judul: Studi perbandingan mikroba rumen antara domba dan kambing lokal
Abstrak: Sheep and goats are a small ruminants. They have similar system of digestion. According to former research there are differences between sheep and goats especially in rumen microbial. The aim of this research is to compare the rumen microbial population and level of alantoin urine between breed (sheep and goat) and sex (male and female). This research used local sheep and goat which its given the same feed based on each body weight of livestock. The design of the experiment was a Randomized Complete Block design, which is factor A was species and factor B was sex with 5 replications. Data were analysed using ANOVA and significant differences will be further tested using Duncan test. The result showed that there is highly significant differences (P<0.01) in total bacteria and protozoa population between sheep and goat. Total bacteria population were highly significant (P<0.01) different between sex but there is no significant different in total protozoa population. The rumen pH showed that there is no significant different between species and sex. The level of alantoin urine are significant different (W0.05) between species, but there is not significant different between species and sex. No correlation between alantoin and population of rumen microbial in sheep and goat.
Keyword: 

Judul: Pengaruh rasio pemberian pakan yang berbeda terhadap produksi VFA dan NH3 rumen serta kapasitas lambung domba lokal jantan
Abstrak: The objective of this experiment was to different the VFA and NH3 production of rumen and stomach capacity of local male sheep. This experiment had held on March until may 2008. This experiment used complete randomized design and descriptive with three treatments and three replication. Significant differences among treatments further tested with Duncant test. This research used 9 local ram with two dietary treatments included: 80% grass and 20% complete feed for two months (PI), 20% grass 80% complete feed for two months (P2), 20% grass and 80% complete feed for one months and 80% grass and 20% complete feed for one months (P3). This treatment have done in two months of study. The main goal of in this research is to discover the effect of not different feed ratio to VFA and NH3 production rumen, and stomach capacity local male sheep. The treatment give not effect to volatile fatty acid and NH3 local male sheep, the results showed that relative volume of total stomach and weights of tissue to empty body weight were not significantly differents, weights of tissue retikulu-rumen, omasum and abomasum.
Keyword: 

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4