Judul: Penampilan Produksi dan Kualitas Daging Sapi Brahman Cross yang Dipelihara secara Feedlot dengan Perlakuan Anti-Stres
Abstrak: Industri feedlot semakin berkembang dengan cepat selama sepuluh tahun terakhir ini. Usaha feedlot ini memerlukan penyediaan sapi bakalan yang cukup untuk memenuhi konsumsi daging di dalam negeri. Sapi bakalan yang diimpor sebagian besar berasal dari Australia. Sapi-sapi tersebut akan mengalami stres selama di perjalanan. Pemberian kromium pikolinat dalam ransum ternak sapi pedaging diharapkan mampu mengurangi stres pada ternak, sehingga dapat diperoleh karkas dan daging dengan kuantitas dan kualitas yang lebih baik. Rancangan percobaan ini menggunakan Rancangan Acak Lengkap pola searah dan sebagai perlakuannya adalah level pemberian kromium pikolinat (0, 1, 2, 3 dan 4 ppm) pada ransum sapi, masing-masing empat kali ulangan. Hasil sidik ragam menunjukkan bahwa pemberian kromium pikolinat dalam ransum sapi sebagai bahan anti-stres menghasilkan perbedaan yang nyata terhadap pertambahan bobot badan harian bulan kedua, bobot potong, bobot karkas, bobot lean dan persentase bobot karkas. Meskipun demikian, kualitas daging secara umum tidak dipengaruhi oleh pemberian bahan anti-stres.
Keyword: anti-stres, feedlot, daging, penampilan produksi, kualitas

Judul: Performa Reproduksi dan Produksi Sapi Brahman Cross pada Peternakan Rakyat Sistem Penggembalaan
Abstrak: Program budidaya sapi brahman cross dengan sistem penggembalaan telah diterapkan pada peternakan rakyat di provinsi Kalimantan Selatan. Badan Usaha Milik Petani PT Cahaya Abadi Petani (BUMP PT CAP) merupakan salah satu usaha peternakan rakyat berbadan hukum yang dipercaya oleh pemerintah Australia untuk melakukan pengembangbiakan sapi Brahman cross dengan sistem penggembalaan (open grazing). Penelitian ini menggunakan populasi sapi brahman cross sebanyak 103 ekor induk dan 11 ekor pejantan dan bertujuan mengetahui performa reproduksi dan produksi sapi Brahman cross yang dipelihara peternak dengan sistem penggembalaan. Penelitian ini menggunakan data sekunder dengan parameter reproduksi dan produksi meliputi angka kelahiran, selang beranak, mortalitas, sex ratio, skor kondisi tubuh, dan bobot badan. Pengumpulan data dilakukan dengan metode survei dan dianalisis menggunakan analisis deskriptif. Hasil pengamatan menunjukkan tingkat kematian pedet dan sapi dewasa relatif rendah, masing-masing sebesar 3,24% dan 1.62%. Rata-rata tingkat kelahiran anak mencapai 66,05% dari populasi betina produktif dengan selang beranak 14.60 bulan. Bobot badan dan skor kondisi tubuh sapi brahman cross untuk semua kategori umur dan jenis kelamin cukup tinggi. Sapi brahman cross dapat dikembangkan di peternakan rakyat secara open grazing dengan produktivtas baik.
Keyword: brahman cross, grazing, performance, production, reproduction

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