Judul: Produksi anak kelinci New Zealand White dengan perkawinan pada umur muda
Abstrak: Cara pemeliharaan berkelompok, menyebabkan terjadinya perkawinan pada umur muda. Peternak menginginkan kelincinya cepat berproduksi pada umur muda. Tujuan penelitian ini adalah untuk mempelajari persentase bobot hidup dewasa kelamin terhadap bobot hidup dewasa. Selain itu juga dipelajari pengaruh perkawinan pada umur muda terhadap litter size, bobot lahir dan mortalitas anak. Penelitian ini dilakukan di Laboratorium Ternak Ruminansia Kecil, Fakultas Peternakan, Institut Pertanian Bogor. Ternak yang digunakan adalah kelinci betina New Zealand White lepas sapih, sebanyak 15 ekor dengan rataan bobot hidup awal 566,67±174,47 g. Perlakuan yang diberikan adalah perbedaan jumlah pemberian penguat yaitu R1 = 40 g, R2 = 60 g, R3 = 80 g. Rumput lapang dan air minum diberikan ad libitum. Pengamatan dilakukan untuk memperoleh (1) pertambahan bobot hidup, (2) bobot hidup dewasa kelamin, (3) litter size, (4) rataan bobot lahir anak, (5) konsumsi pakan dan (6) konversi pakan. Penelitian dilaksanakan dalam rancangan acak lengkap. Penelitian ini mendapatkan hasil bahwa perbedaan pemberian jumlah konsentrat tidak berpengaruh nyata terhadap parameter yang diukur. Perkawinan pada umur muda memberikan dampak rataan bobot lahir yang rendah, sifat keindukan yang buruk dan tingkat mortalitas yang tinggi. Bobot hidup dewasa kelamin berkisar antara 69,20-94,79% dari bobot hidup dewasa. Litter size yang diperoleh 5,85±1,63 dan mortalitas sebesar 51,83±31,87%.
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Judul: Mortalitas Anak Prasapih dan Penampilan Reproduksi Induk Kelinci New Zealand White dengan Pemberian Ransum Komplit Mengandung Daun Kelor.
Abstrak: Penelitian ini bertujuan untuk mengevaluasi tingkat mortalitas anak saat lahir dan performa reproduksi induk kelinci New Zealand White yang diberi ransum komplit mengandung daun kelor dengan taraf pemberian berbeda. Penelitian ini menggunakan 12 ekor kelinci betina New Zealand White dengan rataan berat sebesar 3380.83±357.90 gram. Rancangan percobaan yang dilakukan adalah Rancangan Acak Lengkap (RAL) dengan empat perlakuan dan tiga ulangan. Perlakuan meliputi P0 (pelet tanpa daun kelor), P1 (pelet mengandung 10% daun kelor), P2 (pelet mengandung 20% daun kelor), dan P3 (pelet mengandung 30% daun kelor). Hasil penelitian yang diperoleh menunjukkan perlakuan tidak memberikan pengaruh signifikan terhadap konsumsi bahan kering, pertambahan bobot badan, efisiensi penggunaan ransum, dan penampilan reproduksi, serta perlakuan dapat menurunkan mortalitas anak saat lahir. Kesimpulan dari penelitian ini adalah pemberian daun kelor dalam ransum komplit hingga taraf 30% dapat mengurangi tingkat mortalitas anak saat lahir tanpa mempengaruhi performa reproduksi induk.
Keyword: daun kelor, induk kelinci New Zealand White, mortalitas, pelet, performa reproduksi

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