Judul: Studi Lama Penyimpanan terhadap Kualitas Nutrien Onggok Fermentasi (Cassabio)
Abstrak: Cassava pulp can be used for animal feed as an alternative feed source, but it must be processed first prior to use such as through fermentation technology. The fermented product is called cassabio. Cassabio that is produced in a big scale will not be directly fed to the livestock, but it has to be storage first for some time. This study was aimed to determine the effect of storage time on the quality of cassabio. Cassabio storage was done in plastic bags, conducted over 3 months under room temperature and humidity. The treatment used was storage time (0, 2, 4, 6, 8, 10, and 12 weeks) with 4 replications. The design of this study was based on a completely randomized design. Results showed that cassabio storage for 12 weeks significantly lowered DM and NFE. Crude fat content during the storage period significantly increased up to 6 weeks, and decreased afterwards. Storage period also gave a significant effect on crude protein to form a linear curve andincreased crude fiber content, while the storage priod did not affect ash content and pH of cassabio.
Keyword: storage, quality, cassabio

Judul: Evaluasi Penambahan Cassabio ke dalam Ransum terhadap Konsumsi dan Kecernaan Zat Makanan pada Anak Domba Lokal.
Abstrak: Problems that are faced in farming development in Indonesia are providing feed raw materials, these are due to its low quantity and quality, as well as expensive in its price. The availability of feed raw material is also limited by its competition with human needs which are in line with the increase in its population, and by its dependent on imported products. Utilisation of agricultural byproduct, and improving its quality with applied technology, can be used as alternatives to overcome the problems. Cassava waste (onggok) is a byproduct of cassava flour industry with an increase in its amount relating to the increase in cassava flour industry. However, its use is limited by its low crude protein content, but its energy content is high, then it can be used as energy source feed. Improving nutritive value of cassava byproduct can be done by solid substrate fermentation with Aspergillus niger which is mixed with urea and ammonium sulphate as inorganic nitrogen sources. The product is known as cassabio, but the optimal use of cassabio in a ration has not yet been determined. Therefore, the experiment is carried out to evaluate cassabio addition into rations of local lamb at growth phase on nutrient digestibility. The experiment was conducted using randomized block design with four treatments and three replications, local lambs were used as replications. The treatments applied were addition levels of cassabio into concentrate at 0% (P0), 20% (P1), 40% (P2), and 60% (P3). Variables measured were digestibilities of dry matter, organic matter, crude protein, crude fiber, ether extract, nitrogen free extract, total digestible nutrients (TDN) and digestible energy (DE). Data were analysed with analysis of variance (ANOVA) and differences among treatments were determined with Duncan test. The results showed that the use of cassabio up to 60% (P3) in rations for local lamb at growth phase produced the best results on variables measured (digestibility and consumption). The highest nutrient consumption and digestibilities were obtained at 568.65 gram/day and 76.25% for organic matter, 394.45 gram/day and 82.39% for nitrogen free extract, and 86.28 gram/day and 76.25% for crude protein. The conclusion of this research is the use cassabio up to 60% into concentrate given are safe and the best results in local lamb.
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Judul: Formulasi Hamiltonian untuk Menggambarkan Gerak Gelombang Soliter Dimensi Tiga di Permukaan Laut
Abstrak: Gelombang permukaan adalah gelombang yang terjadi perbedaan rapat massa antara air dan udara. Salah satu gelombang permukaan yang ditinjau adalah gelombang soliter. Formulasi gelombang soliter dilakukan dengan menggunakan formulasi Hamiltonian.
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