Judul: Productivity of Young Cross Does at Over Two Kilograms of Liveweight.
Abstrak: An experiment was carried out to estimate the characteristics of production of young cross does that mated over 2 kg of liveweight, with the diifereat quantity of consentrate. The experiment had been done in Laboratory of Small Ruminant Faculty of Animal Husbandary, Bogor Agricultural University on March - August 2000. Eight young cross does with an average liveweight of 1.574,375 ± 113 g, were grouped into 2 different quantity of consentrate. The fist treatment (Rl) was given concentrate of 100 g/d/doe and 50 g/d/doe for the second treatment (R2). The mating was conducted when liveweight of rabbit gained over 2 kg and recorded as the mate weight. The obseived parameters including daily weight gain, mate weight, long of pregnancy, litter size, litter weight at buth and moitality at thee weeks. It was also studied the feed treatments toward daily dry feed intake, feed convertion, litter growth and physical condition of does. All data were explained by descriptive analysis. T-test statistical was used to learn correlation among mate weight, litter size, litter born weight and mortality at each treatments (Gaspersz, 1991).
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Judul: Identifikasi Produktivitas Induk Domba yang Digembalakan sebagai Dasar Kriteria Seleksi di Unit Pendidikan Penelitian dan Peternakan Jonggol Institut Pertanian Bogor (UP3J-IPB).
Abstrak: Local sheep is one of the animal genetic resources which is potential to be developed in supporting national meat supply. Local sheep has some superiorities such as twinning birth, early mature age and non seasonally breeding. Nevertheless, instead of these superiority, some problem still occurred as lacking of lamb survivability rate, low carcass percentage and high variances both genotype and phenotype parameters. The objectives of this study were to find the relationship between ewe age and its productivity, and ewe body measurements and its milk yield on grazing system. This study was conducted in the Jonggol Animal Science Teaching and Research Unit (JASTRU), Singasari Village, Bogor District, from June up to November 2007. As many 100 lactating ewes, on 1 to 4 years of age, were used in this study. Sheep were reared on grazing system from 9 a.m. to 4 p.m. and housed at night. The results showed that ewe age highly significant affected the body weight after lambing (p<0,01), milk yield (p<0,01), total birth weight (p<0,01) and total weaning weight (P<0,01) but did not significant for litter size. Breast circle, udder base circle, and udder height showed strong relationship in predicting 3 to 5 year ewe milk yield (p<0,01). The most productive ewes was 3 to 4 year ewes group.
Keyword: Sheep, udder size, milk yield, Weaning weight

Judul: Nanokristalin Pirit (FeS2) sebagai Material Semikonduktor Fotovoltaik.
Abstrak: Teknologi fotovoltaik adalah suatu proses yang dapat mengubah sinar matahari menjadi energi listrik dengan media semikonduktor. Penggunaan sel surya untuk fotovoltaik hanya dapat mengonversi radiasi matahari menjadi energi listrik kurang dari 20%. Efisiensi akan meningkat ketika material semikonduktor untuk fotovoltaik dibuat menjadi ukuran nano. Pirit merupakan salah satu material semikonduktor fotovoltaik yang memiliki energi pita celah (Eg) dalam kisaran 0.8–0.95 eV. Energi pita celah tersebut terbukti meningkat ketika disintesis dengan metode hidrotermal menggunakan beragam molar [S]:[Fe] pada suhu 200 °C dalam 24 jam. Nilai energi pita celah yang dihasilkan adalah 1.58–2.073 eV. Ukuran nanokristalin pirit yang dihasilkan berada pada kisaran 21.04–58.77 nm menurut data Particle Size Analyzer. Besarnya ukuran nanokristal pirit yang tumbuh kurang dari 50 nm merupakan poin penting untuk aplikasi fotovoltaik.
Keyword: Hidrotermal, fotovoltaik, nanokristal, pirit