Judul: Pemberian tepung daun singkong dalam ransum dan pengaruhnya terhadap performans ayam broiler
Abstrak: Penelitian ini terdiri atas dua percobaan, yaitu : percobaan untuk menentukan energi metabolis tepung daun singkong secara biologis dan percobaan pernberian makanan (Feeding trial) pada ayam broiler. Percobaan untuk rnenentukan energi metabolis tepung daun singkong dilakukan di Laboratorium Ilrnu Nutrisi Ternak Unggas, Fakultas Peternakan, Institut Pertanian Bogor selana satu rninggu. Percobaan ini bertujuan untuk kandungan energi rnetabolis tepung daun mengetahui singkong. Materi yang digunakan adalah dua belas ekor ayarn broiler strain Hubbard tanpa dibedakan jenis kelaminnya yang berurnur enam rninggu dengan berat badan kurang lebih 2.0 kilogram tiap ekor. Bahan rnakanan yang akan ditentukan kandungan energi rnetabolisnya rnendapat tiga ulangan rnasing-masing ulangan menggunakan satu ekor ayam. untuk koreksi data dilakukan perlakuan kontrol (tanpa pernberian tepung daun singkong) sebanyak tiga ekor ayarn. Metode yang digunakan dalarn percobaan ini Metode Sibbald (1976). ...
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Judul: Pemberian Tepung Singkong yang Ditambahkan Isoamilase sebagai Pengganti Jagung dalam Pakan terhadap Performa Ayam Broiler.
Abstrak: Singkong berpotensi menggantikan jagung sebagai sumber energi dalam pakan unggas. Akan tetapi, tingkat keberhasilannya terbatas oleh perbedaan rasio pati singkong dan jagung. Penelitian ini bertujuan menentukan pengaruh pemberian tepung singkong yang ditambahkan isoamilase sebagai pengganti jagung dalam pakan terhadap performa ayam broiler. Penelitian ini menggunakan 300 ekor DOC broiler strain ross yang telah dilakukan sexing. Perlakuan pakan meliputi, P0: Pakan basal (kontrol); P1: Pakan basal dengan substitusi jagung 50%; P2: Pakan basal dengan substitusi jagung 50% + 0.14% isoamilase. Peubah yang diamati, yaitu konsumsi, bobot badan, pertambahan bobot badan, konversi pakan, income over feed and chick cost dan mortalitas. Data akan dianalisis menggunakan ANOVA dengan aplikasi SPSS 25.0. Hasil yang signifikan (P<0.05) diuji lanjut dengan uji Duncan. Rancangan acak lengkap pola faktorial 3x2 dengan dua faktor. Faktor yang pertama adalah perlakuan pakan dan faktor kedua adalah jenis kelamin dengan lima ulangan. Hasil yang diperoleh, perlakuan pakan signifikan (P<0.05) terhadap bobot badan dan pertambahan bobot badan, faktor jenis kelamin signifikan (P<0.05) mempengaruhi konsumsi dan konversi pakan. Perlakuan pakan dan interaksinya tidak mempengaruhi performa ayam broiler (P>0.05). Simpulan pemberian tepung singkong yang ditambahkan isoamilase 0.14% sebagai pengganti jagung tidak efektif memperbaiki peningkatan bobot badan ayam broiler yang dipelihara selama lima minggu.
Keyword: broiler, isoamilase, performa, tepung singkong

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