Judul: Karakteristik kualitatif dan kuantitatif hasil persilangan ayam pelung dan arab
Abstrak: The research was conducted to get information about qualitative and quantitative characteristics on crossbreeeding local chicken between Pelung and Arab chicken (PxA). It was done based on lowness of performance local chicken in Indonesia which are correlation with lowness of protein consumption rate. Crossbred PxA chicken were expected to show better productivities performance of the crossbred chicken were grow rate, increasing body weight, and body measurements. T-test and Principal Component Analysis was used to explain crossbred PxA chicken performances.. Crossbred chicken showed a good performance potency. Males body weight were 587.33±58.93 g (10.03% of coeficient variation) and the females were 501.42±70.53 g (14.07% of coeficient variation) at the seventh weeks in ages. The body weight was showed significant difference (P<0.05) on the third week in ages between males and females crossbred PxA chicken, and very significant difference (P<0.01) at the forth till seventh week. Significant increasing body weight both of males and females crossbred PxA chicken were at the fust to second week interval. Body measurements were showed significant difference (P<0.05) for length of third finger, shank, back, and body weight at the eleventh week of ages, and very significant difference (P<0.01) for length of wings, height of comb, and height of head. The heighest variety of body measurement both of males (25.0%) and females (27.78%) at the eleventh week in ages was in length of maxilla, and the lowest variety both of them in length of third finger.
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Judul: Analysis of Carcass Weight Percentage and Commercial Cuts of Chickens Crossed with IPB-D2 Chicken and IPB-D3 Chicken and their Reciprocals
Abstrak: Peningkatan mutu genetik ayam lokal telah dilakukan dengan mengembangkan ayam IPB-D1 sebagai rumpun baru ayam lokal unggul yaitu IPB-D2 dan IPB-D3. Ayam IPB-D2 sebagai calon galur yang memiliki titer antibodi tinggi dan ayam IPB-D3 memiliki pertumbuhan yang cepat. Pertumbuhan bobot badan yang cepat akan memengaruhi persentase karkas dan potongan komersial. Penelitian bertujuan untuk mengkaji respon produksi karkas antar persilangan. Data yang diperoleh dalam penelitian ini dianalisis deskriptif dengan menyajikan nilai rata-rata (x¯), simpangan baku (sb) dan koefisien keragaman (KK) serta uji-T dengan setiap persilangan sebanyak 10 ulangan. Variabel karkas yang diamati adalah bobot potong, karkas, dada, paha atas, paha bawah, sayap, punggung, dan variabel non karkas yaitu kepala, kaki, usus, hati, jantung, serta ampedal. Ayam hasil persilangan ayam IPB-D2 dengan ayam IPB-D3 dan resiprokalnya tidak memberikan perbedaan nyata pada bobot potong, persentase karkas, dan persentase non karkas. Perbedaan nyata hanya pada komponen dada yang disebabkan terdeposisinya daging pada bagian dada. Simpulan bahwa ayam hasil persilangan ayam IPB-D2 dengan ayam IPB-D3 memiliki persentase potongan dada yang lebih tinggi dibanding resiprokalnya. The genetic quality of local chickens has improved by developing IPB-D1 chickens as a new line of superior local chickens. The IPB-D2 chicken is the offspring of IPB-D1 chicken selected based on high antibody titer of body resistance. Meanwhile, the IPB-D3 chicken is the offspring of IPB-D1 chicken chosen based on the production of fast meat growth. This research contains information on measuring the percentage of carcass, non-carcass, and commercial cuts of chickens from the cross of IPB-D2 chickens with IPB-D3 chickens and their reciprocals at 12 weeks of age. The research objective was to see the response of carcass production between crossbreeds. The data were analyzed descriptively by presenting the mean value (x¯), standard deviation (sd) coefficient of variation (cv), and t-test with each cross including ten replicates. The carcass variables observed weight carcass, breast, thigh, drumstick, wing, dorsal, and non-carcass variables were head, leg, intestine, liver, heart, and gizzard. The crossing of IPB-D2 chicken with IPB-D3 chicken and its reciprocal did not significantly differ in weight, carcass percentage, and non-carcass percentage. There was only a significant difference in the breast component due to the deposition of the meat on the breast.
Keyword: ayam IPB-D2, ayam IPB-D3, persentase karkas, potongan komersial

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