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: Comparison of Carcass and Non-Carcass Weight  Percentage between IPB-D2 Chickens and IPB-D3 Chickens at Different Slaughter  Age
Abstrak: Ayam IPB-D1 sebagai rumpun baru ayam lokal merupakan upaya meningkatkan mutu genetik ayam lokal Indonesia. Ayam IPB-D2 dan IPB-D3 keturunan ayam IPB-D1 diseleksi untuk dijadikan calon indukan ayam IPB-D1 unggul. Penelitian ini bertujuan menambah informasi, mengkaji, dan membandingkan persentase bobot karkas dan non-karkas pada galur ayam IPB-D2 dan IPB-D3 pada umur potong berbeda. Ayam yang digunakan sebanyak 30 ekor untuk masing masing galur. Peubah yang diamati yaitu bobot dada, paha atas, paha bawah, sayap, punggung, kepala, leher, ceker, hati, usus, rempela, dan jantung. Data yang diperoleh dianalisis dengan uji deskriptif dan uji t. Hasil penelitian menunjukkan persentase bobot karkas ayam jantan IPB-D2 G4 lebih kecil dibandingkan dengan ayam jantan IPB-D3 G2. Persentase bobot non-karkas ayam jantan IPB-D2 G4 lebih besar dari ayam jantan IPB-D3 G2. Ayam IPB-D3 memiliki peluang yang unggul sebagai calon galur pejantan dan ayam penghasil daging. Ayam IPB-D2 memiliki peluang yang unggul sebagai calon galur betina., The IPB-D1 chicken as a new species of local chickens is an effort to improve the genetic quality of Indonesia's local chickens. Chicken IPB-D2 and IPB-D3 incubators of chicken IPB-D1 were selected for special breed chicken IPB-D1. The study aims to add information, review, and compare the percentage of weight of carcass and non-carcass in chicken galleys IPB-D2 and IPB-D3 at different cut ages. Chickens used up to 30 chickens each. The observed change was the weight of the chest, upper thigh, lower thigh, wing, back, head, neck, neck, claw, liver, intestines, and heart. Data obtained was analyzed with a descriptive and t-test results showing a percentage of cock weight in IPB-D2 G4 cock was smaller than the IPB-D3 G2 cock. Non-carcass a cock IPB-D2 G4 was greater than a cock IPB-D3 G2. The chicken IPB-D3 has a distinct chance of becoming a male and flesh-producing hen. The IPB-D2 chicken has an excellent opportunity as a female trowel.
Keyword: carcass weight, IPB-D2 line chicken, IPB-D3 line chicken, non-carcass  weight

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