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: Evaluation of Feed Nutrient Adequacy in Free Range Maintenance System on IPB-D1 Chicken Composition
Abstrak: Sistem free-range merupakan sistem umbaran agar ternak merasa nyaman dan tidak stres. Penelitian ini bertujuan mengevaluasi kecukupan nutrisi pakan pada sistem pemeliharaan free-range terhadap komposisi karkas ayam IPB-D1 di Sinar Harapan Farm umur 11 minggu yang telah dipelihara selama 6 minggu. Sampel yang digunakan yaitu 20 ekor ayam IPB-D1 (9 ekor jantan, 11 ekor betina) diambil secara porpusive sampling dari 110 ekor. Data penelitian dianalisis secara deskriptif menyajikan data rata-rata dan standar deviasi. Variabel yang diukur dalam penelitian ini bobot potong, persentase karkas, persentase potongan komersial dan persentase potongan non-karkas. Hasil penelitian menunjukan bobot potong jantan lebih besar dibandingkan betina, nilai rata-rata sebesar 900,33 g dan 869,73 g. Ratarata karkas jantan 56,44% dan betina 53,57%. Persentase non karkas jantan dan betina dengan pemeliharaan free range 33,64% dan 35,72%. Simpulan penelitian yaitu pemeliharaan sistem free range pada karkas dan potongan komersial ayam IPB-D1 mengandung mineral Fe tinggi dibandingkan daging ayam broiler., The free-range system is an umbrella system so that livestock feel comfortable and not stressed. This study aimed to evaluate the adequacy of feed nutrition in the free-range rearing system on the carcass composition of 11-weekold IPB-D1 chickens at Sinar Harapan Farm that have been reared for 6 weeks. The samples used in this study were 20 IPB-D1 chickens (9 males, 11 females) taken by porpusive sampling from 110 chickens. The research data were analyzed descriptively presenting the average data and standard deviation. The variables measured in this study were slaughter weight, carcass percentage, percentage of commercial cuts and percentage of non-carcass cuts. The results showed that the slaughter weight of males was greater than females, with an average value of 900.33 g and 869.73 g, respectively. The average carcass of males was 56.44% and females 53.57%. The percentage of non-carcass males and females with free range maintenance is 33.64% and 35.72%. The conclusion of the study was that the maintenance of a free range system on carcasses and commercial cuts of IPB-D1 chickens contain high Fe minerals compared to broiler meat.
Keyword: carcass, IPB-D1 Chicken, Free range

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