Judul: Body Size of The Sixth Generation Merawangarab Chicken Interse Mating at The Age of 2 Weeks to 12 Weeks
Abstrak: Ayam merawangarab sebagai ayam silangan dari dua rumpun ayam lokal merawang dan arab merupakan upaya pengembangan kualitas ayam kampung di bidang genetika. Penelitian ini bertujuan mengkaji pengaruh komposisi genetik yang berbeda yaitu merawang 25%, 50%, 62,5%, dan 75% terhadap ukuran tubuh ayam merawangarab generasi enam. Penelitian berupa pengukuran terhadap peubah berupa panjang shank, lingkar shank, panjang femur, panjang tibia, lingkar dada, panjang dada, dalam dada, lebar dada, panjang punggung, panjang sayap, dan bobot badan dari ayam berumur 2 minggu sampai 12 minggu. Hasil penelitian menunjukkan ukuran tubuh ayam merawangarab dengan komposisi genetik yang berbeda mengalami pertambahan ukuran seiring pertambahan umur. Komposisi genetik yang berbeda pada ayam merawangarab generasi enam tidak berpengaruh terhadap ukuran tubuh ayam. Ukuran tubuh pada ayam dengan komposisi genetik merawang 25%, merawang 50%, merawang 62,5%, dan merawang 75% sama dan mendekati seragam., Merawangarab chicken is a crossed breed chicken from two local breeds, merawang, and arab chicken families that had been an effort to develop the quality of native chickens in genetics. This study examines the effect of different genetic compositions, namely merawang 25%, 50%, 62.5%, and 75% on the body size of sixth-generation merawangarab chickens. The study was in the form of body parts measurements of merawangarab chickens including shank length, shank circumference, femur length, tibia length, chest circumference, chest-length, chest depth, chest width, back length, wing length, and body weight during the age of 2 weeks to 12 weeks. The results showed that the body size of merawangarab chickens with different genetic compositions increased in size with age. The different genetic compositions of the sixth generation of merawangarab chickens had no effect on the body size of the chickens. The diversity of body size in chickens with the genetic composition of merawang 25%, merawang 50%, merawang 62.5%, and merawang 75% were same and close to uniform.
Keyword: arab chicken, body size, merawang chicken, merawangarab chicken

Judul: Morphometrics of Fourth Generation Merawangarab
Chickens Age 2 to 12 Weeks with Different Feed Percentages
Abstrak: AGUS SRI WIDODO. Morfometrik Ayam Merawangarab Generasi Keempat Umur 2 Sampai 12 Minggu dengan Persentase Pakan Berbeda. Dibimbing oleh SRI DARWATI dan IYEP KOMALA. Ayam lokal merupakan sumber daya genetik yang sangat berharga yang perlu dilestarikan dan dikembangkan. Penelitian ini mengkaji morfometrik ayam merawang arab generasi keempat dengan komposisi pakan konsentrat 80%, dedak 20%, dan konsentrat 100%. Peubah yang diamati pada penelitian ini adalah panjang shank, panjang femur, panjang tibia, panjang dada, panjang punggung, panjang sayap, lingkar shank, lingkar dada, lebar dada, dan dalam dada ayam merawangarab dengan komposisi pakan konsentrat 80% dan 100% tidak berbeda nyata pada umur 2-12 minggu. Rata-rata panjang dada ayam dengan komposisi konsentrat 80% dan 100% tidak berbeda nyata pada umur 2-8 minggu, namun berbeda nyata pada umur 10-12 minggu. Rata-rata panjang dada ayam dengan komposisi konsentrat 80% dan 100% umur 10 minggu berturut-turut adalah 85,15±6,01 mm dan 80,70±6,42 mm, sedangkan umur 12 minggu masing-masing 92,97±5,44 mm dan 88,44±6,08 mm. Ayam merawangarab dengan komposisi pakan 80% konsentrat, 20% dedak, dan 100% konsentrat mempunyai ukuran tubuh yang sama., AGUS SRI WIDODO. Morphometrics of Fourth Generation Merawangarab Chickens Age 2 to 12 Weeks with Different Feed Percentages. Supervised by SRI DARWATI and IYEP KOMALA. Local chickens are a very valuable genetic resource that needs to be preserved and developed. This study examines the morphometrics of the fourth generation of merawangarab chickens with a feed composition of 80% concentrate, 20% bran, and 100% concentrate. The variables observed in this study were shank length, femur length, tibia length, chest length, back length, wing length, shank circumference, chest circumference, chest width, and chest depth of merawangarab chickens with a feed composition of 80% and 100% concentrate were not significantly different at the age of 2-12 weeks. The average chest length of chickens with a concentrate composition of 80% and 100% was not significantly different at the age of 2-8 weeks, but was significantly different at the age of 10-12 weeks. The average breast length of chickens with a composition of 80% and 100% concentrate at 10 weeks of age was 85.15±6.01 mm and 80.70±6.42 mm, respectively, while at 12 weeks of age it was 92.97±5.44 mm and 88.44±6.08 mm, respectively. Merawangarab chickens with a feed composition of 80% concentrate, 20% bran, and 100% concentrate had the same body size.
Keyword: morfometrik, persilangan, ayam arab, ayam merawang, ayam merawangarab

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