Judul: Pengaruh Pemberian Minyak Sawit dan Vitamin D dalam Ransum terhadap Kualitas Telur Ayam ISA-Brown Umur 60-67 Minggu
Abstrak: Masalah utama yang terjadi di akhir periode produksi telur adalah menurunnya kualitas kerabang seiring dengan bertambahnya umur ayam dan penurunan kemampuan menyerap kalsium. Penelitian ini bertujuan mengkaji pengaruh ransum yang menggunakan minyak sawit dan suplementasi vitamin D terhadap kualitas telur dari ayam tua. Penelititian ini menggunakan 96 ekor ayam ISA-Brown umur 60-67 minggu dengan Rancangan Acak Lengkap (RAL) pola faktorial 2x2 dan 4 ulangan. Faktor I adalah minyak sawit (MS) dan faktor II adalah suplementasi vitamin D(SVD). Ransum yang digunakan adalah ransum 3% MS+0 IU kg-1 SVD (R1), 3% MS+3500 IU kg-1 SVD (R2), 6% MS+0 IU kg-1 SVD (R3), dan 6% MS+3500 IU kg-1 SVD (R4). Suplementasi vitamin D (p<0.05) meningkatkan bobot dan tebal kerabang, serta skor warna yolk. Interaksi antara kedua faktor berpengaruh sangat nyata (p<0.01) pada bobot yolk dan nyata (p<0.05) pada persentase bobot yolk. Suplementasi Vitamin D mampu meningkatkan kualitas kerabang dan komponen telur lainnya. Jumlah lipid yang sesuai membantu absorbsi vitamin D dan interaksinya berpengaruh dalam metabolisme produksi telur.
Keyword: kualitas telur, minyak sawit, vitamin D

Judul: Pengaruh Suplementasi Vitamin E dan Selenium dalam Ransum terhadap Kualitas Telur dan Profil Darah Ayam Petelur Umur 45- 51 Minggu
Abstrak: Vitamin E and selenium are primary antioxidants and essential microminerals, that has synergism interaction to prevent lipid peroxidation damage in the body cell. This study was aim to determine the effect of supplementation vitamin E, selenium, and its combination on egg quality, selenium content of egg, and blood profile. A Completely Randomized Design (CRD) with 4 treatments and 4 replication was used in this experiment. The variables observed were egg quality, selenium content of egg, and blood profile. This study used 96 of 45 weeks old of Isa Brown layer. The treatments were P1 = control diet, P2 = P1 + 0.8 mg kg-1 selenium, P3 = P1 + 300 mg kg-1 vitamin E, P4 = P1 + 300 mg kg-1 vitamin E + 0.8 mg kg-1 selenium. The results showed that selenium 0.8 mg kg-1 was affected decreased shell thickness. Supplementation of Selenium, vitamin E and its combination increased egg selenium content.
Keyword: vitamin E, selenium, egg quality, blood profile

Judul: Penyelesaian Stacker Crane Problem dengan Algoritme Largearcs dan Smallarcs
Abstrak: In graph theory, the Rural Postman Problem (RPP) aims to determine the shortest route with minimum cost, in which only certain edges or arcs are necessarily traversed. One type of RPP is Stacker Crane Problem (SCP) which deals with a mixed graph but only arcs are necessarily traversed. SCP can be solved by using two heuristic algorithms, i.e. Largearcs and Smallarcs algorithms, which include other algorithms in their steps, such as: Dijkstra algorithm to determine shortest route, Hungaria method to determine minimum bipartite matching, Prim algorithm to determine minimum spanning tree, and van Aardenne-Ehrenfest & de-Bruijn algorithm and Fleury algorithm to determine Euler circuits. The shortest Euler circuit resulted from two heuristic algorithms can be used to find a solution of SCP. The application of SCP is illustrated in establishing the minimum distance route of catering delivery.
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