Judul: Analisis Hidrologi Menggunakan Model SWAT di Sub DAS Samin DAS Solo
Abstrak: Samin sub watershed (26 950.4 ha) is a part of Solo watershed that is listed as highest priority to manage. The relationship between rainfall, land cover and soil type is very complex, so hydrology based model is needed to look at characteristics watershed. Soil and Water Assessment Tool (SWAT) is a model that could be used to understand hydrology condition of watershed. The aim of this research is to analyze the hydrology condition and water balance in Samin Sub Watershed using SWAT model in sub watershed Samin. The input that are used in this SWAT model consist of 1:25 000 scale land cover map, 1:50 000 scale soil map, 1:25 000 scale river network map and daily climate data from year 2008-2013. Land cover consist of dry secondary forest (638.5 ha), forest plantations (1550.9 ha), bush (309.9 ha), plantations (902.8 ha), bare land (3.0 ha), 3 dryland agriculture (8628.0 ha), dryland agriculture with bushes (9451.9 ha), and paddy field (3550.4 ha). Soil consist of association of grey alluvial and greyed brown alluvial (4339.0), association of dark grey grumosol and brown mediteran (4743.3 ha), reddish brown latosol (14 714.9 ha), and brown mediteran (3153.2 ha). The validation of the SWAT model results in a NSE value of 0.6 and R² 0.7. This means SWAT model could be used to predict hydrology condition. Water balance of SWAT model shows that with rainfall of 3543 mm/year. Samin Sub Watershed could produce ground water flow of 311.0 mm/year (8.8%), percollation 452.0 mm/year (12.8%), lateral flow 4.3 mm/year (0.1%), surface runoff 2078.4 mm/year (58.7%), and evapotranspiration 697.3 mm/year (19.7%). River in sub watershed Samin will experience drought if there is no rain during the day and time of occurrence 50.75 more rain into the peak flow during the 19.825 days.
Keyword: Bogor Agricultural University (IPB), water balance, SWAT model, Samin Sub Watershed, hydrology analysis

Judul: Analisis Hidrologi Menggunakan Model SWAT di Sub DAS Ciwidey Kabupaten Bandung
Abstrak: Sub DAS Ciwidey merupakan salah satu hulu DAS Citarum dengan luas 2 842.56 ha didominasi penutupan lahan hutan (1 534.79 ha) dan jenis tanah Asosisasi andosol coklat dan regosol coklat (2 613.71 ha). Model Soil and Water Assessment Tool (SWAT) digunakan untuk menduga kondisi hidrologi. Model SWAT menggunakan masukan berupa tutupan lahan, peta tanah skala 1:25 000, data hujan harian dan modifikasi data hujan per jam. Simulasi dilakukan selama 5 bulan mulai tanggal 10 Februari 2013 sampai 23 Juni 2013. Hasil kalibrasi menunjukkan nilai R2 sebesar 0.67 yang masuk dalam kategori memuaskan. Hasil analisa neraca air menunjukkan rasio evapotranspirasi aktual terhadap curah hujan sebesar 0.17, perkolasi 0.51, aliran bawah tanah 0.03, aliran lateral 0.20, dan aliran permukaan 0.06. Tiga kejadian debit puncak terjadi menunjukkan nilai water yield terbesar yaitu sebesar 4.74 mm dengan curah hujan sebesar 64 mm. Base flow sebelum debit puncak yaitu 0.06 mm dan besar direct run off yaitu 4.68 mm dengan rasio antara direct run off dan base flow sebesar 78. Tutupan hutan sangat berperan dalam pengendalian limpasan dan tingginya aliran dasar di Sub DAS Ciwidey.
Keyword: debit puncak, neraca air, Sub DAS Ciwidey, SWAT

Judul: The effect on niacin supplementation on production and egg cholesterol of hysex brown laying hens
Abstrak: Telur merupakan salah satu bahan makanan asal ternak unggas yang kaya akan gizi, seperti karbohidrat, protein, lemak, vitamin dan mineral, disamping harganya murah, sehingga disebut wonderful food. Oleh karena itu, tidak mengherankan konsumsi telur di Indonesia cukup tinggi dibandingkan dengan bahan makanan sumber protein hewani lain. Disisi lain, adanya persepsi, bahwa sebutir telur mengandung kolesterol relatif cukup tinggi, yaitu 200 - 250 mg atau 1280 mg per 100 g kuning telur (yolk).
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