Judul: Perubahan Berat Badan Domba Ekor Tipis yang Diinfeksi Haemonchus contortus
Abstrak: The aim of this research was to investigate the influence of Haemonchus contortus infection on the weight gain of thin tail sheep. Twenty thin tail sheep, which have previously been freed from helminth infection were devided into five groups. One group served as uninfected controls, whereas the other four groups were infected experimentaly with 500, 1000, 2000, and 4000 H. contortus. The animal were weighed weekly for eigth weeks. At the end of the study all sheep were slaugtered for worm counting of H. contortus in abomasum. Degrees of infection were catagorized based on the number of worm into three groups namely mild (1-250), moderate (251-500), and heavy infection (>500). Results of this study showed there were decreased weight gain of 1170 g, 1703 g, 1633 g, 2680 g for control, mild, moderat and heavy infection. The percentage decline of weight gain on mild group was 10 %, moderat group was 11 % and 16 % heavy infection group was compared with at begining of experiment
Keyword: Bogor Agricultural University (IPB), the degree of infection., changes in weight, the worm, Haemonchus contortus

Judul: Derajat haemonchosis berdasarkan jumlah cacing dan telur tiap gram tinja (TTGT) pada domba ekor tipis
Abstrak: The aim of this experiment was to study the degree of helminth infection caused by Haemonchus contortus based on the number of worm and egg per gram of faeces (EPG) on thin tail sheep. Faecal samples were collected from 20 sheeps infected by Haemonchus contortus with the doses of 500, 1000, 2000, 4000 infected larva and non infected group as control. Adult worms were collected from the experimental sheeps at the end of experiment. In eighth week after infection, the results showed the highest establishment occurred on the infected groups of 500, 1000,2000 and 4000 larvae with the percentage of 50.1%, 14.6%, 6.1% and 3.6%, repectively.. Linear regression analysis showed strong relationship between the number of EPG and the number of worms of Haemonchus contortus. Degree infection were categorized based on the number of worms showed a mild infection with 1-250 worms produced as many as 50- 4400 EPG, medium infection with 251-500 worms produced as many as 4400- 8800 EPG and heavy infection with >500 worms produced >8000 EPG.
Keyword: Bogor Agricultural University (IPB), EGP, Haemonchus contortus, Estabilshment, degree infection

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