Judul: Performan dan Histopatologi Usus Halus Broiler yang Diberi Pakan Silase dan Ditantang Salmonella typhimurium
Abstrak: Aplikasi mengenai teknologi pengolahan pakan berupa silase dapat menjamin ketahanan pakan dan juga dapat menggantikan antibiotik melalui kandungan bakteri asam laktat (BAL) dan asam organik yang dimiliki oleh produk silase. Tujuan penelitian ini adalah untuk mempelajari pengaruh pakan dalam bentuk silase terhadap performa dan perkembangan bakteri Salmonella di dalam usus halus broiler. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap dengan menggunakan 168 ekor broiler yang dibagi dalam 21 petak kemudian diberi salah satu dari 7 macam perlakuan ransum, yaitu : S1 (Ransum silase), B1 (Ransum basal), L1 (Ransum basal + L. Plantarum), S2 (S1 + infeksi Salmonella typhi.), B2 (B1 + infeksi Salmonella typhi.), L2 (L1 + infeksi Salmonella typhi.), A (B1 + antibiotik + infeksi Salmonella typhi.). Data yang diperoleh dianalisa dengan sidik ragam (Analysis of Variance / ANOVA) dan jika berbeda nyata diuji dengan menggunakan uji Kontras Orthogonal. Data tingkat kerusakan usus halus diolah dengan menggunakan Kruskal-Wallis.
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Judul: Performan ayam broiler yang diberi ransum silase dan diuji tantang dengan Salmonella sp.
Abstrak: The esperiment was conducted to study the effect of silage ration on broilers performance which were infected by Salmonella typhimuriwn The experiment was conducted by 120 Day Old Chick (DOC) Cobb 500 strain. The animals were divided into 12 groups and assigned to one of four treatments namely: S1 (Silage), S2 (silage complete ration, with broilers were infected with Salmonella) and R1 (control), R2 (control ration, with broilers were infected with Salmonella).
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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