Judul: Pengaruh Tingkat Pemberian Protein Ransum Terhadap Laju Pertumbuhan Dan Komposisi Karkas Domba Priangan
Abstrak: A research about the effect of dietary protein level on the growth rate and carcass composition of Priangan Sheep was carried out at the Faculty of Animal Husbandry, Padjadjaran University, Jatinangor-Sumedang, from July 21 to November 15, 1991. Twenty four Priangan Sheep 6-7 month old and 11-12 kilogram of body weight were used in this experiment, in Completely Randomized factorial design with three dietary protein levels ( 13.35; 16.46 and 19.40) %, Four slaughter weight 13, 15, 17 and 19 kg and two replication of each variables in this experiment are body weight gain, feeding period, dry matter intake, protein intake and carcass composition. The Regression Analysis Allometric Huxley were used to follow the growth and development of body composition, The results of this study, that the protein level of ration at 13.35; 16.46, and 19.40 per cent were not significantly different body weight gain, dry matter consumption and efficient use of rations, but significantly different (P> 0.5) for protein intake ration. Protein levels of 13.35; 16.46 and 19.40 per cent, giving a coefficient of relative growth vary in development time, which is to empty body weight, carcass weight, meat weight, fat weight, tissue weight, oval weight the slaughter weight to provide value b> 1. The growth rate increased with increasing relative slaughter weight, high growth potential and growth, including late maturing period, the percentage of relative growth increases with the slaughter weight. As for the bone weights, gastrointestinal weight and body weight beyond providing value b <1 the slaughter weight. The growth rate decreases with increasing relative slaughter weight, low growth potential and a growth include early maturing, the percentage of relative growth decreases with increasing slaughter weight.
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Judul: Breed comparison of growth, body and carcass composition between priangan and fat fail sheep
Abstrak: Penelitian dilaksanakan di Fakultas Peternakan, Institut Pertanian Bogor dari bulan Mei 1992 sampai dengan Februari 1993. Penelitian ini menggunakan domba Priangan dan Ekor Gemuk jantan muda dengan bobot hidup antara 7.7 sampai 13.9 kg (rataan: 11.32 kg, kk: 15.16%). Tiga macam ransum disusun untuk penelitian ini, R1 dengan protein dapat dicerna (dd) 134 g dan energi dd 11.120 MJoule, R2 dengan protein dd 204 g dan energi dd 11.524 MJoule dan R3 dengan protein dd 280 g dan energi dd 10.748 MJoule per kg bahan kering. Ransum dan air minum di berikan ad libitum.
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Judul: Pembuatan Film Tipis Cu2ZnSnS4 sebagai Lapisan Penyerap Cahaya pada Sel Surya Menggunakan Metode Elektrodeposisi
Abstrak: Thin film of Cu2ZnSnS4 (CZTS) is an alternative semiconductor used as light absorber layer on solar cell. CZTS can replace silicon that commonly used as commercial semiconductor. The advantage of using CZTS as absorber layer is due to the abundance of its chemical composer on earth, and its high value of absorption coefficient. The absorber layer was made by using electrodeposition method on ITO glass substrates. The films were deposited at room temperature using potentiostatic mode with a potential of –1.05 V for 30, 45, and 60 minutes. After that, the films were annealed at two different temperatures, 180 ºC and 500 °C, for 45 minutes in N2/H2S atmosphere. Based on X-ray diffraction analysis, the polycrystalline thin film obtained fall into kesterite crystal phase. This type of crystal was obtained when the CZTS was annealed at 500 °C in H2S/N2 atmosphere. The value of optical band gap energy for the CZTS thin film was 2.2 eV with the film thickness about 1.228–6.366 μm. The sample of CZTS with electrodeposition time of 45 minutes and annealing temperature of 500 °C showed the best result and in conformity with absorber layers criteria for solar cells.
Keyword: semiconductor, ITO glass, CZTS thin film, electrodeposition