Judul: Efektifita. Tepung Daun Kenikir (Tagetes erecta L.) sebagai Pakan Imbuhan dalam Menekan Perkembangan Nematoda Saluran Pencernaan pada Domba
Abstrak: Infeksi nematoda saluran pencernaan merupakan penyakit parasit yang sangat merugikan bagi ternak. terutama ruminansia kecil. Pemberian obat cacing sintetis merupakan cara yang sering digunakan untuk mengatasi kecacingan pada domba, namun harganya cukup mahal. Tujuan penelitian ini adalah untuk mengkaji penggunaan tepung daun kenikir (Tagetes erecta L.) sebagai obat cacing secara in vivo, mengkaji pengaruh infeksi cacing terhadap konsumsi, kecernaan pakan, perubaban bobot badan domba dan pengaruh kecukupan mineral Zn dalam ransum terhadap infeksi cacing.
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Judul: Pertumbuhan domba yang diinfeksi nematoda saluran pencenaan dan fermentabilitas pakan sebagai respon terhadap pemberian daun kenikir
Abstrak: Sebagian besar domba di Indonesia terinfeksi nematoda saluran pencernaan. Infeksi nematoda pada domba dapat menyebabkan gangguan produksi ternak dan kerugian bagi peternak. Tingkat gangguan dan kerugian tersebut sangat tergantung pada derajat infeksi, status nutrisi dan kekebalan ternak. Kenikir (Tagetes erecta L.) mengandung senyawa polyacetylene yang menunjukkan aktivitas nematisidal dan berpotensi digunakan sebagai obat cacing. Disamping senyawa tersebut, kenikir mengandung alkaloid pirolizidina yang dapat mempengaruhi metabolisme dalam rumen domba. Penelitian ini bertujuan mengetahui: (1) laju pertumbuhan domba yang diinfeksi nematoda saluran pencernaan, (2) pengaruh suplementasi mineral seng terhadap kecacingan, (3) konsumsi bahan kering dan fermentabilitas pakan domba yang diberi daun kenikir, dan (4) perkembangan telur cacing pada tinja domba yang mengandung residu ekstrak daun kenikir. Penelitian menggunakan 36 ekor domba berumur sekitar 1 tahun dengan bobot hidup 13,3 1,8 kg. Domba diberi pakan campuran berupa rumput gajah kering yang digiling dan konsentrat dengan rasio 50: 50 sebanyak 4% dari bobot hidup per hari. Air minum disediakan ad libitum. Dua kelompok domba mendapat ransum bersuplemen 30 ppm Zn. Pada awal percoabaan domba dibebascacingkan. Setelah domba diadaptasikan dengan kondisi lingkungan dan pakan, domba diinfeksi 5000 larva (L3) nematoda saluran pencernaan. Tepung atau ekstrak daun kenikir diberikan selama 5 hari berturut-turut setelah masa prepaten dengan dosis 0,3 g dan 2,25 ml per kg bobot hidup. Konsumsi bahan kering diukur setiap hari dan domba ditimbang seminggu sekali. Jumlah telur cacing dalam tinja domba diukur 3 minggu setelah infeksi, sepuluh hari sebelum dan sesudah pemberian kenikir.
Keyword: nematoda, kenikir, mineral, fermentabilitas, rumen

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