Judul: Egg Production and Quality of IPB D3 Chicken and It's Repeatability Estimation
Abstrak: Ayam IPB D3 merupakan hasil seleksi dari ayam IPB D1 yang mempunyai pertumbuhan bobot badan cepat. Produksi telur yang tinggi dan kualitas telur yang baik bagi ayam lokal sangat penting untuk menghasilkan DOC yang banyak dan berkualitas, maka diperlukan pula nilai ripitabilitas yang tinggi untuk menjaga ketersediaan DOC secara kontinyu. Ternak yang diamati sebanyak 30 ekor betina IPB-D3 dan 90 butir telur. Data produksi dan kualitas telur dianalisis secara deskriptif, pengaruh umur induk terhadap produksi telur, bobot telur dan bobot tetas dijelaskan dengan menyajikan grafik, nilai ripitabilitas dianalisis tersarang dan nilai korelasi dianalisis menggunakan korelasi pearson. Ayam IPB D3 memiliki produksi telur mencapai 37,6% dengan nilai ripitabilitas produksi telur yang tinggi yaitu 0,42, kualitas telur ayam IPB D3 tergolong bagus mengacu kepada nilai Haugh unit yang dikategorikan AA, dengan nilai ripitabilitas kualitas telur yaitu Haugh unit, bobot telur, skor kuning telur, indeks telur, fertilitas dan daya tetas berada pada rentang sedang hingga tinggi dengan nilai 0,40, 0,67, 0,40 dan 0,95, 0,66, dan 0,51. Ayam IPB D3 memiliki nilai korelasi tinggi hingga sangat tinggi dan memiliki potensi produksi dan kualitas telur yang baik.
Keyword: correlation, egg production and quality, IPB D3 chicken, repeatability

Judul: Productivity and Egg Quality in crosses of IPB-D2 Chicken with IPB D-3 Chicken and Their Reciprocals
Abstrak: IPB D1 chickens resulted from the selection of crossbreeds from three local chicken breeds of pelung, sentul, kampung, and meat-type breeds. IPB D1 chickens were selected into IPB-D2 and IPB-D3 chickens. IPB-D2 chickens were selected based on the selection of good body resistance against diseases. IPB-D3 chickens were selected based on the selection of fast body weight growth. The research on productivity and egg quality of crossed IPB-D2 chickens with IPB-D3 chickens and their reciprocals. The research used t-test analysis to compare parameters between the two crosses. The material used was 36 tails consisting of 15 females and 3 males in the two crosses. Egg production of both crosses was categorized as good. Quality of the eggs was rated II (good). Reproduction was categorized as good. Crossing differences were affect on egg length, shell thickness, weight percentage of white and yolk (P, Ayam IPB D1 merupakan hasil seleksi persilangan dari tiga jenis ayam lokal yaitu ayam pelung, sentul, kampung, dan tipe daging. Ayam IPB D1 diseleksi menjadi ayam IPB-D2 dan IPB-D3. Ayam IPB-D2 dipilih berdasarkan seleksi ketahanan tubuh yang baik terhadap penyakit. Ayam IPB-D3 dipilih berdasarkan seleksi pertumbuhan bobot badan yang cepat. Penelitian mengenai produktivitas dan kualitas telur pada silangan ayam IPB-D2 dengan ayam IPB-D3 serta resiprokalnya. Penelitian menggunakan analisis uji-t untuk membandingkan parameter antara kedua silangan. Bahan yang digunakan yaitu 36 ayam indukan yang terdiri dari 15 betina dan 3 jantan pada kedua persilangan. Produksi telur kedua persilangan termasuk dalam kategori baik. Kualitas telur termasuk dalam nilai mutu II (baik). Reproduksi ayam termasuk dalam kategori baik. Perbedaan persilangan berpengaruh pada panjang telur, tebal kerabang, persentase bobot putih dan kuning telur (P
Keyword: kualitas telur, resiprokal, Performance, Egg Production, egg quality, reciprokal, reproduksi, ayam IPB-D3, ayam IPB-D2, ayam IPB-D1, Produktivitas

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