Judul: Percentage of Non-Carcass and Immunity Organs between Male and Female IPB-D1 Chicken Raise in Free-Range System
Abstrak: Ada dua produk yang dihasilkan pada saat pemotongan, yaitu karkas sebagai hasil utama dan non-karkas sebagai hasil samping. Organ limfoid merupakan organ yang berperan dalam sistem kekebalan tubuh unggas. Penelitian ini bertujuan untuk menganalisis persentase bobot organ non-karkas dan organ imunitas, serta menganalisis hasil pengukuran usus pada ayam IPB-D1 jantan dan betina yang dipelihara secara free-range. Penelitian ini menggunakan ayam IPB-D1 jantan dan betina masing-masing 15 ekor. Data dianalisis dengan menggunakan uji T-independent. Hasil penelitian ini menunjukkan bahwa persentase limpa dan tembolok sangat berbeda nyata; persentase duodenum berbeda nyata; dan tidak berbeda nyata pada persentase darah, bulu, kepala, leher, cakar, jantung, hati, timus, bursa fabricius, jejenum, ileum, sekum, dan kolon. Jenis kelamin pada ayam IPB-D1 tidak berpengaruh pada persentase non-karkas dan organ imunitas ayam. Sistem free-range memiliki dampak yang positif yaitu sesuai dengan animal welfare, dan hal negatif yaitu lebih rentan terhadap penyakit., There are two products produced during slaughter, namely carcass as the main product and non-carcass as a side product. Lymphoid organs are organs that play a role in the immune system of poultry. This study aims to analyze the weight percentage of non-carcass organs and immune organs, as well as to analyze the results of gut measurements in male and female IPB-D1 chickens reared in a free-range system. This study used 15 male and female IPB-D1 chickens each. Data were analyzed using the independent T-test. The results of this study indicated that the percentages of spleen and cache were significantly different; duodenal percentage significantly different; and not significantly different in the percentage of blood, feathers, head, neck, claws, heart, liver, thymus, bursa of Fabricius, jejunum, ileum, cecum, and colon. The sex of the IPB-D1 chickens had no effect on the percentage of non-carcasses and immune organs of the chickens. The free-range system has a positive impact, which is in accordance with animal welfare, and the negative impact is more susceptible to disease.
Keyword: free-range system, IPB-D1 chicken, non carcass, organ immunity

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: 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