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: Sintesis 1-Kloro-2-metoksi-6-propilnaftalena-1,3-dioksolana (1:1) sebagai Prekursor Asam (S)-(+)-(6-Metoksi-2-naftil)propanoat
Abstrak: Senyawa 1-kloro-2-metoksi-6-propilnaftalena-1,3-dioksolana (1:1) sebagai prekursor asam (S)-(+)-(6-metoksi-2-naftil)propanoat disintesis dari bahan awal 2-metoksinaftalena. Tahapan sintesis diawali dengan klorinasi menggunakan 2 jenis pereaksi klorinasi, yakni isosianurat terklorinasi dan NaOCl. Klorinasi dengan isosianurat terklorinasi berhasil menyintesis 1-kloro-2-metoksinaftalena sebagai produk monoklorinasi melalui pencirian dengan kromatograf gas-spektrometer massa (GC-MS). Nisbah konversi produk paling efisien diperoleh pada laju penambahan 2.5 mmol/jam. Sebaliknya, klorinasi dengan NaOCl menghasilkan produk triklorinasi. 1-Kloro-2-metoksinaftalena selanjutnya diasilasi dengan propanoil klorida, tetapi analisis dengan GC menunjukkan bahwa produk asilasi tidak terbentuk. Sistem bebas-air diperlukan untuk keberhasilan proses asilasi tersebut.
Keyword: isosianurat terklorinasi, NaOCl, nisbah konversi