Judul: Analysis of Carcass Weight and Commercial Cuts Percentage of IPB-D1 Chickens Reared on a Free-Range System.
Abstrak: Ayam IPB-D1 merupakan rumpun baru lokal komposit yang memiliki keunggulan lebih dari tetuanya. Pemeliharaan ayam ini dilakukan dengan sistem free-range untuk mengurangi tingkat stres. Penelitian ini bertujuan menganalisis persentase bobot karkas dan potongan komersial ayam IPB-D1 umur 12 minggu dengan pemeliharaan sistem free-range di UP3J Fakultas Peternakan IPB. Bahan yang digunakan terdiri dari masing-masing 15 ekor ayam IPB-D1 setiap jenisnya. Data pada penelitian ini dianalisis secara deskriptif untuk membandingkan persentase bobot karkas ayam jantan dan ayam betina. Ayam IPB-D1 jantan dan betina memiliki bobot potong sebesar 901,33 g dan 639,13 g. Persentase bobot karkas ayam IPB-D1 jantan dan betina berturut-turut sebesar 59,82% dan 57,42%. Persentanse bobot karkas ini tidak menunjukkan perbedaan yang nyata antara jantan dan betina, namun terdapat perbedaan yang nyata pada persentase bobot potongan komersial bagian paha atas, paha bawah, dan bagian ceker. Ayam IPB-D1 jantan memiliki persentase bobot potongan komersial lebih tinggi daripada ayam IPB-D1 betina free-range., IPB-D1 chicken is a new local composite breed that has superiority compared to its predecessor. The chickens were reared with a free-range system to lower the stress level. The aim of this study is to analyze the carcass weight and commercial cuts percentage of 12-week-old IPB-D1 chickens which was reared on a free-range system UP3J Faculty of Animal Science, IPB University. The materials that were used were 15 IPB-D1 chickens for each sex. Data was analyzed descriptively to compare the carcass weight percentage of female and male chickens. Male and female IPB-D1 chickens had slaughter weight of 901,33 g and 638,12 g respectively. The carcass weight percentages of male and female IPB-D1 chickens carcasses were 59,82% and 57,42% respectively. The carcass weight percentage of 12-week-old IPB-D1 chickens reared on a free-range system didn’t show significant difference between males and females. But, there were significant differences on the commercial cuts namely, thigh, drumstick, and feet. Male IPB-D1 chickens had a higher commercial cut weight percentage than the females in free-range.
Keyword: Carcass weight, Commercial cut percentage, Free-range, IPB-D1 chicken

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: 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