Judul: Performa domba jantan lokal dengan perlakuan pakan yang berbeda selama dua bulan penggemukan
Abstrak: The aims of this study were to observe the performance of local male sheep, fed with experimental diets which were differentiated according the ratio of complete ration and grass (Brachiaria hurnidicola). The 12 local male sheep under one year old with average body weight of 15.87 1.00 kg (CV = 7.15%) were used in this study and allotted to the four experimental ration there were P1 (Complete feed 20% : Brachiaria humidicola 80%); P2 (Complete feed 80% : Brachiaria humidicola 20%); P3 (Complete feed 80% : Brachiaria humidicola 20% was given in the first month of the experiment then followed by Complete feed 20% : Brachiaria hurnidicola 80% for following month). The parameters measured were body weight gain, feed consumption, feed conversion ratio and Income Over Feed Cost. Randomized Complete Design were used in this experiment and the data were analyzed with analysis of variance (ANOVA). The result showed that the experimental treatment significantly (Pi0.05) affected daily feed consumption but the were no differences between treatments on body weight gain as well as feed conversion ratio. The highest profit was found in P2
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Judul: Performa Bakalan Induk Domba Lokal Yang Diberi Ransum Dengan Level Energi Yang Berbeda.
Abstrak: Young female sheep require adequate energy to improve their performance and reproduction. However, in reality most farmers are not aware of the condition. This experiment was aimed at investigating the effect of different energy levels on the performance of young female sheep. Twelve post-weaning female sheep with average body weight of 9.67 ± 1.72 kg were used in this experiment and fed three rations with different energy levels for 89 days. The rations as treatments consisted of P1= ration with 65% TDN; P2= ration with 70% TDN; and P3= ration with 75% TDN. The experiment used completely randomized design, and data analysis were done with analysis of variance. Further analysis was conducted using orthogonal contrast. Results of the experiment show that different energy levels did not significantly affect consumption of TDN, crude protein, body weight gain, and feed efficiency, but it significantly (P < 0.05) influenced the Ca consumption. It is concluded that ration with 65% TDN is sufficient to support the performances of young female sheep.
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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