Judul: Substitution of Soybean Meal with Maggot Meal as a Source of Protein in Diets for Hamster Reproductive Phase
Abstrak: Pakan hamster yang saat ini beredar masih impor dan menggunakan bahan pakan seperti bungkil kedelai yang harganya masih relatif mahal. Maggot merupakan pakan fungsional sumber protein yang memiliki kandungan nutrisi tinggi sehingga dapat dijadikan sebagai pakan alternatif. Penelitian ini bertujuan mengevaluasi penggunaan tepung maggot dalam ransum hamster pada fase reproduksi. Penelitian menggunakan hamster betina 20 ekor dan 4 ekor jantan dengan usia 4 bulan yang memiliki bobot badan rata-rata hamster betina 30,22 ± 4,45 g. Perlakuan terdiri atas PKo (pakan komersial), M1 (kebutuhan protein 100% dari bungkil kedelai), M2 (kebutuhan protein 50% dari bungkil kedelai + 50% dari tepung maggot), dan M3 (kebutuhan protein 100% dari tepung maggot). Peubah yang diamati dalam penelitian adalah konsumsi ransum, efisiensi penggunaan ransum, frekuensi kawin, persentase kebuntingan, lama kebuntingan, litter size, mortalitas anak, total cost, total pendapatan, dan Income Over Feed Cost. Penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan 4 perlakuan dan 5 ulangan. Pemberian tepung maggot dalam ransum berbentuk pellet dapat meningkatkan konsumsi pada hamster secara nyata (P<0,05) tetapi pemberian pada konsentrasi tinggi cenderung menyebabkan penurunan pada bobot badan. Pemberian tepung maggot juga tidak berpengaruh nyata (P<0,05) pada efisiensi penggunaan ransum dan performa reproduksi hamster. Hasil yang berbeda diperoleh dari aspek ekonomis penggunaan ransum. Penggunaan tepung maggot sebanyak 50% dari kebutuhan protein dalam ransum hamster terbukti dapat meningkatkan nilai Income Over Feed Cost. Kesimpulan dari penelitian ini adalah tepung maggot dapat digunakan sebagai pengganti bungkil kedelai dengan taraf pemberian 50% dari kebutuhan protein.
Keyword: hamster, maggots, pellet, reproduction

Judul: Pengaruh Substitusi Bungkil Kedelai dengan Tepung Maggot (Hermetia illucens) terhadap Konsumsi Zat Makanan dan Fermentabilitas Domba Garut Jantan
Abstrak: rendah. Protein diperlukan sebagai bahan penyusun beberapa hormon dan enzim untuk meningkatkan kualitas sperma. Penelitian ini bertujuan mengevaluasi penggunaan tepung maggot sebagai substitusi bungkil kedelai hingga 100% atau 20% penggunaannya dalam rasum terhadap konsumsi zat makanan dan fermentabilitas domba Garut pejantan. Rancangan acak lengkap dengan 3 perlakuan 4 ulangan (R1 : ransum mengandung bungkil kedelai 20%; R2 : ransum mengandung 10% bungkil kedelai dan 10% tepung maggot; R3: ransum mengandung 20% tepung maggot). Peubah yang diukur adalah konsumsi (rumput, konsentrat, bahan kering, zat makanan, dan TDN), total VFA, kadar amonia, pertambahan bobot badan harian, efisiensi penggunaan pakan, dan efisiensi penggunaan protein. Hasil penelitian menunjukkan bahwa penggunaan tepung maggot berpengaruh nyata terhadap konsumsi lemak tetapi tidak berpengaruh terhadap konsumsi rumput dan konsentrat, konsumsi zat makanan, TDN, total VFA, kadar amonia, PBBH, efisiensi penggunaan pakan dan efisiensi penggunaan protein. Dapat disimpulkan tepung maggot dapat menggantikan 100% tepung bungkil kedelai atau digunakan 20% dalam ransum domba Garut jantan.
Keyword: fermentability, maggot meal, soybean

Judul: Characteristic of Overshooting Top (OT) Based on  Himawari  8  Satellite  as  a  Convective  Cloud  Feature  that  Generates  Extreme Weather in the Java Island Region
Abstrak: Overshooting Top (OT) is a feature at the top of a convective cloud that is associated with extreme weather. Research on OT in tropical Indonesia is still very limited. The existence of geostationary satellites with wide area coverage and fast frequency observations is useful for observing the fast dynamics of the OT life cycle. Therefore, this study intends to analyze the relationship between OT and extreme weather, updraft and thermodynamic conditions of OT when extreme weather occurs, the best objective method for detecting OT in the day time and night time, and the spatiotemporal distribution of OT in the tropical region of Java Island during the 2018-2021 period. Based on visual analysis using visible channel and Himawari 8 sandwich products, 87% of extreme weather events in Java were accompanied by the appearance of OT. It indicates that the presence of the OT pattern is a convection cloud pattern or feature that is closely related to extreme weather events for the Java Island region. The existence of a time lag between the appearance of OT and extreme weather events on Java Island indicates that the OT of convection cloud can be used as a precursor or nowcasting for the appearance of extreme weather. Most of the convective cloud OT features during extreme weather events on Java Island have altitude that were only able to exceed the altitude of the equilibrium level and few were able to exceed the tropopause level of 9 km – 16 km. The difference in atmospheric conditions during extreme weather events on Java Island, which is in the tropics and subtropics, is a strong and unstable convective energy condition characterized by a larger CAPE, as well as unstable KI, LI, SI and TTI values. It is offset by kinematic factors in the form of a weak vertical wind shear (bulk wind shear 0-6 km) and a higher freezing point height. The difference between extreme weather events in the Java Island region and other tropical regions compared to subtropical regions is the strong updraft speed of convection clouds. The IRW Texture COMB algorithm based on the IRW-Texture Gradient modification and the COMB algorithm shows a significant increase in quality for detecting OT and non-OT pixels in Java. Rainy days with rainfall > 50 mm/day are very common in areas with an altitude of > 500 m. On the other hand, the level of convection activity which is indicated by the presence of OT and lightning is significantly reduced in this area. OT of convective clouds appear more frequently during the DJF season and less frequently during the JJA season. OT often appears during the day time and rarely at night time. Most OTs appear in the central part, away from the south and north coasts of Java Island during the day, while OTs that appear near the south and north coasts of Java Island can appear in the morning or afternoon.
Keyword: convective clouds, extreme weather, Overshooting Tops, Himawari 8 Satellite