Judul: Pemanfaatan Campuran Feed Additive Herbal Sebagai Pengganti Anttibiotik Pada Peforma Dan Persentase Karkas Ayam Broiler
Abstrak: Campuran herbal terdiri dari kunyit dan temulawak digunakan sebagai alternatif antibiotik. Penelitian ini bertujuan untuk menguji penggunaan campuran additive herbal sebagai pengganti antibiotik dalam meningkatkan peforma (konsumsi pakan, konsumsi air minum, bobot badan akhir, pertambahan bobot badan, konversi pakan dan mortalitas) dan persentase karkas ayam broiler. Tiga ratus enam puluh ekor DOC strain Ross Jumbo dibagi kedalam 4 perlakuan masing-masing perlakuan terdiri dari 9 ulangan. Perlakuan yang diberikan yaitu P0 = Ransum tanpa antibiotik + tanpa additive herbal pada air minum, P1 = Ransum mengandung antibiotik + additive herbal pada air minum, P2 = Ransum mengandung antibiotik + tanpa additive herbal pada air minum, P3 = Ransum tanpa antibiotik + additive herbal pada air minum. Data dari rancangan acak lengkap (RAL) dianalisis dengan sidik ragam (ANOVA) dan jika didapatkan hasil yang berbeda nyata (P<0.05) dilanjutkan dengan uji Duncan. Hasil penelitian menunjukkan bahwa penambahan additive herbal pada air minum tidak nyata mempengaruhi konsumsi pakan, konsumsi air minum, bobot badan akhir, pertambahan bobot badan, konversi pakan dan persentase karkas. Hal ini menunjukkan bahwa additive herbal yang ditambahkan pada air minum memiliki efek yang sama dengan antibiotik yang ditambahkan kedalam pakan dalam meningkatkan performa dan persentase karkas broiler.
Keyword: antibiotik, additive herbal, broiler, karkas, peforma

Judul: Pengaruh Pemberian Additive Herbal terhadap Performa Ayam Broiler
Abstrak: Additive herbal terdiri dari campuran temulawak dan kunyit yang mengandung zat aktif kurkumin dan xantorizol sebagai alternatif pengganti antibiotik. Penelitian ini bertujuan untuk menguji pengaruh pemberian additive herbal terhadap performa ayam broiler. Penelitian ini mengunakan rancangan acak lengkap, sebanyak dua ratus ekor ayam broiler Strain Ross terbagi menjadi 4 perlakuan dan 5 ulangan yaitu: P0 = Ransum antibiotik + air minum tanpa additive herbal, P1 = Ransum tanpa antibiotik + air minum tanpa mengandung additive herbal, P2 = Ransum tanpa antibiotik + air minum mengandung additive herbal formula A, P3 = Ransum tanpa antibiotik + air minum mengandung additive herbal formula B. Pakan dan air minum diberikan secara ad-libitum selama 35 hari. Peubah yang diamati adalah konsumsi air minum, konsumsi pakan, rasio konsumsi air minum dan konsumsi pakan, bobot badan, pertambahan bobot badan, konversi pakan, dan mortalitas. Data dianalisis menggunakan (ANOVA), jika terdapat data yang berpengaruh nyata (P<0.05), maka diuji lanjut dengan Duncan. Hasil penelitian menunjukkan bahwa penambahan additive herbal formula A dan formula B pada air minum tidak nyata mempengaruhi konsumsi pakan, konsumsi air minum, bobot badan akhir, pertambahan bobot badan, dan konversi pakan. Hal ini menunjukkan penambahan additive herbal formula A dan formula B memiliki efek yang sama terhadap performa ayam yang diberi antibiotik.
Keyword: antibiotik, broiler, herbal, performa

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