Judul: Kinerja produksi sapi Australian Commercial Cross yang dipelihara secara feedlot dengan kondisi bakalan dan lama penggemukan berbeda
Abstrak: Penelitian bertujuan untuk mengkaji kondisi bakalan dan lama Penggemukan yang paling efektif dan efisien, sehingga diperoleh kinerja produksi sapi yang secara ekonomis mnguntungkan pada pemeliharaan secara feedlot. Delapan belas ekor sapi bakalan Australian Commercial Cross kebiri dengan bobot 301-380 kg dan kisaran umur 2-3 tahun (12-13). Percobaan menggunakan Rancangan Acak Lengkap pola Faktorial 2x3, dengan tiga ulangan. Faktor pertama adalah kondisi bakalan (kondisi kompensasi dan non kompensasi). Faktor kedua adalah lama penggemukan (2, 3 dan 4 bulan). Selama penelitian pakan dan air minum diberikan secara adlibitum. Parameter yang diamati meliputi parameter pertumbuhan berupa pertambahan bobot badan, konsumsi bahan kering, konversi pakan dan bobot potong; parameter komposisi tubuh berupa persentase karkas dan komponen karkas, persentase potongan komersial karkas (wholesale cut), persentase non karkas dan komponen non karkas serta parameter nilai ekonomis ternak berupa feed cost gain dan income over feed cost.
Keyword: Australian Commercial Cross, Feed Cost Gain, Income over feed cost

Judul: Nilai karkas dan non karkas sapi Australian commercial cross yang dipelihara secara feedlot pada lama penggemukan berbeda
Abstrak: Penelitian ini bertujuan untuk mengetahui nilai karkas dan non karkas Sapi Australian Commercial Cross yang dipelihara secara feedlot pada lama penggemukan berbeda, sehingga diperoleh sapi yang secara ekonomis menguntungkan. Delapan belas ekor Sapi Australian Commercial Cross (ACC) jantan kebiri, hasil penggemukan selama 60, 90 dan 120 hari yang berasal dari perusahaan penggemukan PT. Kariyana Gita Utama Cicurug, Sukabumi. Penelitian ini dilaksanakan di RPH PT. Sampico Adhi Abattoir Tambun, Bekasi. Sapi dipilih dan dikelompokkan berdasarkan kondisi tubuh, kemudian dipotong dan dipelajari komposisi karkas dan non karkasnya. Peubah yang diamati adalah bobot dan persentase karkas, bobot dan persentase komponen karkas, bobot dan persentase komponen non karkas dan nilai ekonomi karkas dan non karkas. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok dengan perlakuan lama penggemukan 60, 90 dan 120 hari. Pengelompokan berdasarkan kondisi tubuh yaitu kondisi kurus tapi sehat dan kondisi sedang tapi sehat dan setiap kelompok terdiri dari 3 ulangan. Analisis data dilakukan dengan menggunakan Analisis Peragam (ANCOVA), dimana bobot awal dipakai sebagai faktor koreksi untuk menghilangkan pengaruh keragaman yang besar pada bobot awalnya. Hasil penelitian menunjukkan bahwa lama penggemukan mempengaruhi bobot karkas dan komponen karkas yaitu daging dan lemak, tetapi bobot tulang tidak berbeda nyata, dimana bobot karkas, daging dan lemak nilainya meningkat dengan bertambahnya lama penggemukan sedangkan bobot tulang relatif konstan. Persentase komponen karkas yaitu daging, lemak dan tulang berbeda nyata pada setiap lama penggemukan, tetapi tidak...
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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