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: Pengaruh jenis kelamin dan pengelompokan bobot potong terhadap komposisi karkas domba lokal Priangan
Abstrak: Suatu penelitian tentang pengaruh jenis kelamin dan pengelompokan bobot potong terhadap komposisi karkas (dan juga komposisi tubuh) domba lokal Priangan dilakukan di Departemen Ilmu Produksi Ternak Fakultas Peternakan IPB. Penelitian dilakukan dari 6 April 1980 sampai dengan 29 Janu ari 1981. Analisis data dilakukan dengan klasifikasi dwi-arah dengan anak sampel. Sebagai perlakuan adalah jenis kelamin dan pengelompokan bobot potong (15.00, 16.50 .. 26.57). Bobot potong yang satu dengan berikutnya berjenjang 10 persen (Bj = 15.00 kg (1+ 0.10 )j -1; j=1,2, .... 7). Tekhnik pemotongan seri dilakukan terhadap domba teracak dengan mengikuti tatacara Natasasmita (1978). Analisis re grasi setelah sidik ragam dilakukan untuk pendekatan pada persamaan alometrik Huxley seperti dilakukan Natasasmita (1978). Interpretasi terhadap kriteria pertumbuhan perkem bangan, waktu perkembangan dan potensi pertumbuhan dilakukan melalui pengujian terhadap hipotesis Hø : b = ø dan Hø : b = 1. Sebanyak 42 ekor domba lokal priangan terlibat dalam penelitian, yaitu 21 ekor domba jantan (11.86 1.31 kg) dan 21 ekor domba betina (11.10 1.37 kg) de ngan umur 68 bulan. Selama penelitian domba diberi pakan formula Sugana et al (1979) terdiri rumput lapangan ke ring matahari (10.63 protein kasar) dan konsentrat (14.31 protein kasar) yang mengandung 30 persen tinja ayam kering. Pakan diberikan secara ad libitum. Hasil penelitian menunjukkan (1) pada rentangan bobot potong 15.00 26.57 kg, bobot dan persentase bobot karkas domba lokal Priangan betina lebih besar dari pada domba jantan. Sebaliknya, pada bobot potong yang sama, bobot komponen non-karkas domba betina lebih rendah dari pada domba jantan. (2) Pertumbuhan karkas tergolong masak lambat dengan potensi pertumbuhan yang tinggi, sementara pertumbuhan komponen non-karkas tergolong masak dini sampai sedang. (3) Pertumbuhan tulang tergolong masak dini, fasia masak sedang dan daging maupun lemak tubuh termasuk masak lambat. Dua komponen tubuh tersebut terakhir tadi memiliki potensi pertumbuhan yang tinggi. (4) Bobot daging, lemak dan tulang karkas domba lokal Priangan jantan relatif sama dengan komponen serupa pada domba betina. (5) Bo bot optimal domba lokal Priangan betina dicapai pada bobot yang lebih rendah dari pada bobot optimal domba jantan. (6) Dari berbagai data dapat disimpulkan bahwa domba lokal Priangan memiliki potensi pedaging yang tinggi. ...
Keyword: Sheep, Sex sheep, Carcasses

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