Judul: Morphometrics of Fifth Prospective Generation IPB D2 Chickens Aged 4 to 12 Weeks
Abstrak: Ayam IPB-D2 merupakan ayam lokal hasil seleksi ayam IPB-D1 yang ditujukan untuk memiliki keunggulan tahan penyakit, pertumbuhan cepat, dan mampu beradaptasi pada lingkungan tropis. Penelitian ini bertujuan mengkaji dan mengevaluasi ukuran tubuh ayam IPB-D2 generasi kelima umur 4 sampai 12 minggu. Peubah yang diukur mencakup panjang shank, lingkar shank, panjang femur, panjang tibia, panjang dada, lebar dada, dalam dada, lingkar dada, panjang punggung, panjang sayap. Data peubah diukur setiap 2 minggu dan dianalisis secara deskriptif dan uji-t. Hasil penelitian menunjukkan 3 dari 10 peubah meliputi lingkar shank, panjang dada, dan dalam dada memiliki ukuran yang lebih rendah dibandingkan ayam IPB-D2 G4. Koefisien keragaman ayam IPB-D2 G5 pada umur 12 minggu berkisar 4,56%-9,79%. Nilai koefisien tersebut menunjukkan populasi yang sudah mendekati seragam dari segi karakteristik ukuran sehingga ayam IPB-D2 G5 bisa diajukan sebagai calon galur., IPB-D2 chickens are local chickens resulting from IPB-D1 chicken selection, which are intended to be disease-resistant, fast-growing, and able to adapt to tropical environments. This study aims to study and evaluate the body size of fifth-generation IPB-D2 chickens aged 4 to 12 weeks. The variables measured include shank length, shank circumference, femur length, tibia length, chest-length, chest width, chest depth, chest circumference, back length, and wing length. Variable data was measured every 2 weeks and analyzed descriptively and analyzed by t-test. The results showed that 3 out of 10 variables including shank circumference, breast length, and chest depth were lower than IPB-D2 G4 chickens. The diversity coefficient of IPB-D2 G5 chickens at 12 weeks of age ranges from 4.56% to 9.79%. This coefficient value shows that the population is nearly uniform in terms of size characteristics, which means IPB-D2 G5 chickens can be proposed as a candidate strain.
Keyword: IPB-D2 chickens, selection, morphometrics, crossing

Judul: Body Morphometric of Candidate Line of IPB-D2 Chicken Fourth Generation Ages 2 to 12 Weeks
Abstrak: Ayam lokal Indonesia memiliki genetik yang tidak seragam, salah satu cara untuk meningkatkan produktivitasnya adalah dengan persilangan. Ayam lokal hasil persilangan dengan rumpun ayam pedaging yang dikembangkan oleh Institut Pertanian Bogor adalah ayam IPB-D1. Ayam IPB D-1 diseleksi berdasarkan immunocompletence membentuk calon galur ayam IPB-D2 (female line). Penelitian ini bertujuan mengkaji ukuran tubuh ayam calon galur ayam IPB-D2 generasi keempat umur 2 sampai 12 minggu. Jumlah ayam yang digunakan di Bogor sebanyak 75 ekor dan di Boyolali sebanyak 32 ekor pada umur 12 minggu. Peubah yang diukur yaitu panjang shank, lingkar shank, panjang tibia, panjang femur, panjang dada, lebar dada, dalam dada, lingkar dada, panjang punggung, panjang sayap, dan panjang leher. Data dianalisis secara deskriptif dan uji-t. Koefisien keragaman ayam IPB-D2 G4 berkisar antara 5,09% sampai 18,68%. Hasil menunjukkan ukuran tubuh jantan dan betina ayam IPB-D2 G4 cenderung tidak memiliki perbedaan yang nyata namun berbeda nyata dengan ayam IPB-D2 G4 di Boyolali baik pada jantan maupun betina. Ukuran tubuh ayam IPB-D2 G4 jantan dan betina sama. Kata kunci: ayam IPB-D2, morfometrik, persilangan, seleksi, Indonesian local chickens have non-uniform genetics, one way to increase their productivity is by crossing. The local chicken resulting from crossbreeding with the broiler developed by the Institut Pertanian Bogor is the IPB-D1 chicken. IPB D-1 chickens were selected based on their immunocompleteness to form IPB- D2 chicken line candidates (female line). The aim of this study was to examine the body size of the fourth generation of IPB-D2 at ages 2 to 12 weeks. The numbers of chickens used in Bogor were 75 birds and 32 birds in Boyolali at the age of 12 weeks. The variables measured were shank length, shank circumference, tibia length, femur length, chest length, chest width, chest, chest circumference, back length, wing length, and neck length. Data were analyzed by descriptive analysis and T test. The coefficient of diversity of IPB-D2 G4 chickens ranged from 5.09% to 18.68%. The results showed that the body sizes of the male and female IPB-D2 G4 chickens tended to have no significant difference, but were significantly different from the IPB-D2 G4 chickens at Boyolali both male or female. Morfometric of male dan female IPB-D2 G4 chicken were same. Keywords: crossing, IPB-D2 chicken, morphometrics, selection
Keyword: crossing, IPB-D2 chicken, morphometrics, selection

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