Judul: Komposisi karkas dan kimia daging kelinci persilangan pada berbagai tingkat bobot hidup
Abstrak: Informasi mengenai komposisi kimia daging kelinci masih sangat kurang sehingga dilakukan penelitian yang bertujuan untuk mempelajari komposisi kimia dagingnya pada berbagai tingkat bobot hidup agar pemanfaatannya dapat dioptimalkan. Penelitian menggunakan delapan ekor kelinci persilangan yang berasal dari peternakan rakyat yang menghasilkan kelinci potongan yang tidak diketahui asal-usul tetuanya. Penelitian dilakukan di Laboratorium Ilmu Ternak Ruminansia Kecil dan Ilmu Teknologi Pakan, Fakultas Peternakan, Institut Pertanian Bogor. Rancangan percobaan yang digunakan adalah rancangan acak lengkap pola searah dengan dua kali ulangan. Perlakuan yang diberikan adalah perbedaan bobot hidup yaitu pada bobot hidup 500, 1.000, 1.500 dan 2.000 g. Komposisi kimia dagingnya (otot dan lemak tanpa lemak ginjal) yang dianalisis meliputi kadar air, lemak, protein dan mineral. Pengaruh perlakuan terhadap komposisi kimia yang diamati dianalisis menggunakan sidik ragam. Data yang diperoleh ditampilkan dengan kurva respon dan dilanjutkan dengan analisa deskriptif. Data pertumbuhan relatif dianalisis dengan persamaan Alometri Y-ax (Snedecor dan Cochran, 1967). Hasil penelitian menunjukkan bobot potong kelinci sangat menentukan komposisi karkasnya. Meningkatnya bobot potong diikuti dengan meningkatnya persentase bobot karkas dengan tingkat keeratan 98,5%. Peningkatan bobot karkas dikuti dengan meningkatnya persentase bobot daging dengan tingkat keeratan 99,3% dan berkurangnya persentase bobot tulangnya dengan tingkat keeratan 73,98%. Komposisi kimia daging kelinci berubah mengikuti perubahan bobot hidupnya. Kadar air daging berkurang dengan meningkatnya bobot hidup sementara kadar lemak meningkat seiring meningkatnya bobot hidupnya. Kadar protein dan kadar mineral relatif konstan pada berbagai tingkat bobot hidup. Bobot hidup 500-2.000 g, menghasilkan daging dengan komposisi kimia 71,67%-78,82% air, 18,69% -22,36% protein, 0.60%-1,05% lemak dan 1,03%-1,10% mineral.
Keyword: rabbit meat, living weight, cutting weight, chemical composition

Judul: Pengaruh Kadar Lemak Ransum Terhadap Produksi Potongan Karkas Komersial dan Organ Tubuh Pada Kelinci Persilangan Jantan
Abstrak: Pengaruh kadar lemak ransum terhadap produksi potongan karkas komersial dan organ tubuhnya dipelajari di Laboratorium Ilmu Produksi Ternak Daging dan Kerja, Fakultas Peternakan, Institut Pertanian Bogor dari tanggal 1 April sampai dengan tanggal 22 Juni 1984. Empat puluh ekor kelinci persilangan jantan muda de- ngan bobot awal antara 900 sampai 1100 g (1058 + 109.2 g) dibagi menjadi lima kelompok untuk lima perlakuan dengan masing-masing delapam ekor untuk ulangan. Perlakuan terdiri atas 5 kadar lemak yaitu 3 persen (A), 5 persen (B), 7 persen (C), 9 persen (D) dan 11 persen (E). Kadar protein dan serat kasar semua ransum adalah sama. Penelitian dilakukan dalam Rancangan Acak Lengkap selama 7 minggu dengan masa pendahuluan satu minggu. Ransum dan air minum diberikan ad libitum. Pada akhir penelitian semua hewan dipotong, dan karkasnya dipotong untuk memperoleh potongan komersial (Herman et al., 1983), kemudian masing-masing diuraikan menjadi urat daging, lemak dan tulang, kemudian ditimbang, demikian juga semua organ tubuh ditimbang setelah masing-masing dipisahkan. Pengaruh perlakuan dipelajari dengan analisis peragam model : Y = Ti aXb. ...
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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