Judul: The Effect of Physical Processing of Dry Grated Sago (Sapuring) on the Metabolic Energy Value of Broiler Chickens
Abstrak: Penelitian ini dilakukan untuk mengetahui pengaruh hasil pengolahan sagu parut kering (sapuring) terhadap kualitas biologis dalam ransum ayam broiler. Pengolahan sagu parut kering meliputi pemanenan, pemarutan, pengeringan dan pengayakan. Perlakuan yang diberikan yaitu penambahan sagu parut halus dalam ransum sebanyak 17% (25% sebagai pengganti jagung) dan 33% (50% sebagai pengganti jagung). Penelitian ini menggunakan ayam broiler jantan umur 5 minggu sebanyak 12 ekor, 9 ekor diberikan ransum perlakuan dan 3 ekor sebagai perlakuan endogenous. Penelitian dibagi menjadi 3 perlakuan dan 3 ulangan menggunakan rancangan acak lengkap, data dianalisis dengan analisis varian (ANOVA) dan dianalisis uji lanjut menggunakan Duncan. Peubah yang diukur meliputi kandungan nutrien sagu parut, RN, KcBK dan EM. Hasil menunjukkan bahwa pengolahan sapuring dengan proses pengayakan hanya menurunkan kadar serat kasar sebesar 11%. Penambahan sagu parut halus tidak memberikan pengaruh negatif terhadap kualitas biologis ransum. Nilai KcBK dan EM ransum ayam broiler dengan penambahan sagu parut halus yaitu 51,37%–55,32% dan 2302,3–2395,23 kkal/kg., The purpose of this study was to determine the effect of the processing of dry grated sago (sapuring) on the biological quality of broiler chicken rations. The processing of dry grated sago consists of harvesting, grating, drying and sieving. Treatment given by the addition of finely grated sago in the ration as much as 17% (25% replace of corn) and 33% (50% replace of corn). This experiment used 12 broiler chickens (5 weeks of age), 9 broiler chickens were given treatment rations and 3 broiler chickens as endogenous treatment. The study was divided into 3 treatments and 3 replications using completely randomized design. Data analyzed using analysis of variance (ANOVA) and the data were further analyzed using Duncan’s multiple range test. Parameters measured were nutrient content of grated sago, NR, DMD and ME. The result showed that the processing of dry grated sago with a sieving process only reduced the crude fiber content by 11%. The addition of finely grated sago doesn’t have a negative effect on biological quality of the ration. The value of DMD and ME of broiler chicken rations with addition finely grated sago are 51,37%–55,32% and 2302,3–2395,23 kkal/kg, respectively.
Keyword: broiler chicken, digestibility, dry grated sago, metabolizable energy

Judul: Performance of Broiler Chicken which Feeded Ration Containing Energy Source for Corn Substitute
Abstrak: Penelitian ini bertujuan untuk mengevaluasi bahan pakan lokal sorgum, gaplek, dan sagu utuh sebagai pengganti jagung dalam ransum terhadap performa ayam broiler. Peubah yang diamati adalah bobot badan akhir, pertambahan bobot badan, konsumsi pakan, konversi pakan, dan mortalitas selama pemeliharaan pada umur 7-35 hari. Rancangan percobaan yang dilakukan adalah Rancangan Acak Lengkap (RAL) dengan 4 perlakuan yaitu ransum komersial (P0), ransum berbasis sorgum (P1), ransum berbasis gaplek (P2) dan ransum berbasis sagu parut kering (P3). Setiap perlakuan terdiri atas 3 ulangan dengan kepadatan 16-17 ekor m-2 pada tiap ulangan dengan jumlah ayam sebanyak 200 ekor. Hasil penelitian menunjukkan bahwa rata-rata bobot badan akhir, pertambahan bobot badan, dan konversi pakan berbeda sangat nyata (P<0,01) lebih rendah dibandingkan perlakuan kontrol, sedangkan konsumsi pakan tidak berbeda nyata. Performa ayam broiler pada perlakuan P1, P2, dan P3 tidak berbeda nyata. Pemberian ransum berbasis sorgum, gaplek, dan sagu parut kering sebagai substitusi jagung ransum pada ayam broiler menghasilkan performa yang lebih rendah dibandingkan pakan komersial., This study aimed to evaluate local feed ingredients such as sorghum, cassava, and whole sago as an energy source to replace on the performance of broiler chickens. The variables observed included body weight, body weight gain, feed consumption, feed conversion ratio and mortality from 7 to 35 days of age. The experimental design carried out was a completely randomized design (CRD) with 4 treatments, namely commercial ration (P0), complete ration based on sorghum (P1), complete ration based on cassava (P2), complete ration based on dry grated sago (P3). Each treatment consisted of 3 replications with a density of 16-17 m-2 in each repetition with total of 200 chickens. The results showed that the average final body weight, body weight gain, and feed conversion ratio were very significantly different (P<0.01) lower than the control treatment, while feed consumption was not significantly different. The performance of broiler chickens in treatment P1, P2, and P3 was not significantly different. The diet contain sorghum, cassava, and dry grated sago as a substitute corn in broiler chicken rations resulted in lower body weight gain compared with the commercial feed.
Keyword: broiler chickens, cassava, performance, sorghum, whole sago

Judul: Penggunaan Teorema Homeomorphy 2-Manifold dan Teorema Euler Poincare pada Torus 𝑇�� dan Simplicial Complex 𝐾��
Abstrak: Two dimensional topological spaces are said to be homeomorphic if they have the same topological invariant, where one of topological invariant used is an Euler characteristic. Homeomorphy 2-Manifold’s Theorem and Euler Poincare’s Theorem are used to distinguish two topological spaces. Homeomorphy 2-Manifold’s Theorem uses Euler characteristic to identify two dimensional topological spaces. Euler Poincare’s Theorem is an alternative way to find Euler characteristic with Betti number, which is topological invariant as well. The objective of this paper is to investigate the homeomorphism of torus 𝑇����� and simplicial complex 𝐾�����. Topological space torus and simplicial complex 𝐾����� have the same Euler characteristic, which is two. Based on Homeomorphy 2-Manifold’s Theorem topological space torus 𝑇����� and simplicial complex 𝐾����� is homeomorphic.
Keyword: simplicial, torus, Euler, homeomorphism, topology