Judul: Pengaruh Tepung Garut, Ubi Jalar, dan Onggok Sebagai Bahan Perekat Alami Pelet Terhadap Kualitas Fisik Pakan dan Performa Ayam Broiler
Abstrak: Binder is a substance that has the function to bind the feed component in the form of pellets so that its structure remains compact. The purpose of this research was to know the effect of addition of garut flour, sweet potato flour, and onggok as natural binder for pellet on physical quality of feed and performace of broiler chickens. Completely Randomized Design was used in this experiment, using 4 treatments and 3 replications on physical quality feed, and 4 treatments and 4 replications on performance of broiler. The treatments were R1 = control without binder, R2 = addition of onggok 2%, R3 = addition of sweet potato flour 2%, R4 = addition of garut flour 2%. The data were analyzed using Analysis of Varience (ANOVA) and significant results were further tested using Duncan’s Multiple Range Test. The results showed that addition of onggok 2% in feed influenced (P<0.05) angle of repose (26.30°) and pellet durability index (98.35%), but the treatments in terms did not influence the performance of broiler chickens. The conclusion of this experiment was that onggok 2% as binder yielded the best pellet quality of broiler chickens. The treatments did not influence the performance of broiler chickens. Addition onggok 2% as binder yielded the highest value of IOFCC (Rp. 2337.82/bird)
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Judul: Evaluasi Penggunaan Tepung Garut, Tepung Ubi Jalar dan Onggok sebagai Perekat Pellet Terhadap Persentase Bobot Karkas, Lemak Abdomen dan Organ Dalam Ayam Broiler
Abstrak: Penelitian dilakukan untuk mengevaluasi penggunaan tepung garut, ubi jalar dan onggok sebagai perekat pellet terhadap persentase bobot karkas, lemak abdomen dan organ dalam ayam broiler. Penelitian ini menggunakan 32 ekor ayam broiler dari 240 ekor Day Old Chick yang dipelihara dalam kandang litter selama lima minggu. Analisis data menggunakan Rancangan Acak Lengkap dengan 4 perlakuan dan 4 ulangan. Perlakuan yang diberikan yaitu: A1 = pakan basal, A2 : A1 + 2% tepung garut, A3 : A1 + 2% tepung ubi jalar dan A4 : A1 + 2% onggok. Hasil penelitian menunjukkan bahwa penggunaan tepung garut, tepung ubi jalar dan onggok tidak mempengaruhi berat karkas, organ dalam dan lemak abdomen ayam broiler. Rata-rata persentase berat karkas, lemak abdomen, jantung, hati dan rempela pada penelitian ini adalah 64.03%-64.41%, 0.87%-1.14%. 0.58%-0.61%, 2.52%-2.79%, 2.09%-2.20%. Berdasarkan hasil penelitian dapat disimpulkan bahwa perlakuan tidak memberikan pengaruh pada persentase berat karkas, lemak abdomen dan organ dalam ayam broiler.
Keyword: broiler, binder, carcass, abdominal fat, viscera

Judul: Tinjauan Matematis pada Model Makroskopik dan Mikroskopik Arus Lalu-lintas
Abstrak: Traffic flow phenomenon can be described through mathematical model such as continuous dynamic model with an ordinary differential equation so that it can be solved with integral factors. In this paper three simple models of traffic flow are discussed, i.e, two macroscopic and one microscopic models. Macroscopic model formulates dynamics of the traffic flow that occurs on a large number of vehicles on a road. While the microscopic model explains drivers’ behavior in their interaction with other vehicles ahead, i.e, car-following model. This paper shows the existence of ordinary differential equation found in the traffic flow model and indicates some different representations in the context of the same model. It also reviews a simple model of traffic flow along a single link, which leads to some unexpected results, i.e, it can express the solution model in term of link outflows as well as trip time. In the microscopic model, simulation is done to illustrate the behavior of the drivers with a sensitivity coefficient as a benchmark parameter.
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