Judul: Efektivitas Cacahan Batang Pisang Kepok (Musa paradisiaca Linn.) untuk Mencegah Penyakit Motile Aeromonad Septicemia pada Ikan Lele (Clarias sp.)
Abstrak: Penyakit MAS (Motile Aeromonad Septicemia) disebabkan oleh bakteri Aeromonas hydrophila. Batang pisang kepok (Musa paradisiaca Linn.) merupakan salah satu limbah yang tidak termanfaatkan akan tetapi berguna untuk kesehatan ikan. Penelitian ini bertujuan untuk menentukan dosis cacahan batang pisang kepok (Musa paradisiaca Linn.) sebagai upaya pencegahan penyakit infeksi Aeromonas hydrophila pada ikan lele (Clarias sp.) melalui metode perendaman. Ikan lele yang digunakan dalam penelitian ini berukuran 7,61±0,12 cm dengan bobot rata-rata 4,54±0,21 gram direndam dalam air yang diberi batang pisang kepok 5g/L air, 10g/L air, dan 15g/L air selama 14 hari dan setiap hari ke-7 batang pisang diganti. Uji tantang dilakukan pada hari ke-15 dengan menyuntikkan secara intramuskular 0,1 ml A. Hydrophila (107 CFU/mL) ke ikan lele. Pengamatan kelangsungan hidup relatif dilakukan selama 14 hari. Perlakuan dosis 10g/L air memberikan kelangsungan hidup relatif sebesar 66,67% .
Keyword: Aeromonas hydrophila, Ikan Lele, Musa paradisiaca Linn

Judul: Perendaman Ikan Lele Stadia Pendederan dengan Ekstrak Seduh Batang Pisang Ambon untuk Pencegahan Motile Aeromonad Septicaemia
Abstrak: Penyakit MAS (Motile Aeromonad Septicaemia) disebabkan oleh bakteri Aeromonas hydrophila. Ekstrak seduh batang pisang ambon mengandung senyawa alkaloid, fenolik, tanin, saponin, triterpenoid, glikosida dan flavonoid yang berpotensi sebagai antibakteri dan imunostimulan. Penelitian ini bertujuan untuk menentukan dosis optimum ekstrak seduh batang pisang ambon (Musa paradisiaca) sebagai upaya pencegahan infeksi A. hydrophila pada ikan lele (Clarias sp.). Ikan lele yang digunakan dalam penelitian ini memiliki panjang rata-rata 11,25±0,97 cm dan bobot rata-rata 9,64±1,24 g. Ikan direndam dalam ekstrak batang pisang ambon berkonsentrasi 1%, 2%, dan 3% selama 30 menit setiap hari selama 7 hari. Pada hari ke-10 dilakukan uji tantang dengan menyuntikkan secara intramuskular 0,1 mL bakteri Aeromonas hydrophila (107 CFU/mL) pada ikan lele. Pengamatan tingkat kelangsungan hidup dilakukan selama 14 hari pasca uji tantang. Perlakuan 3% memberikan tingkat kelangsungan hidup tertinggi sebesar 66,7% dan berbeda nyata (P<0,05) dengan perlakuan kontrol positif sebesar 23,3% yang didukung dengan hasil respon imun nonspesifik pada aktivitas fagositik sebesar 38,88%, kadar hematokrit 31,95% dan total leukosit 9,56(x104 sel/mm3).
Keyword: Aeromonas hydrophila, Clarias sp., Musa paradisiaca

Judul: Perdagangan Karet Spesifikasi Teknis antara Thailand dan China
Abstrak: Thailand and China play important roles in the trade of natural rubber because both countries are respectively the biggest exporter and importer of natural rubber in the world. However, there are many problems such as supply shortage of natural rubber to meet the demand for natural rubber and unstable prices. Therefore, it is necessary to examine how the behaviors of both countries affect the supply, demand and price of natural rubber in international trade in particular technical specified rubber (TSR) where this type of rubber have the greatest amount traded between the two countries. This study has two main objectives that include the following: (1) to analyze the factors that influence the export supply, import demand and price for technical specified rubber in Thailand and China, and (2) to analyze the impact of internal factors and external factors alteration to the export supply, import demand and price for technical specified rubber in Thailand and China. This study used econometric analysis and implemented two stage least squares (2SLS) method and simultaneous equation model and used time series secondary data from 1990 to 2010. The results showed that: (1) Thailand’s supply for TSR exports to China was influenced by amount of TSR Thailand export to China in previous year and amount of TSR Thailand production, while Thailand’s supply for TSR exports to non-China was influenced by amount of TSR Thailand production and amount of TSR Thailand exports to China, (2) China’s demand for TSR imports of Thailand influenced by China’s participation in WTO, amount of automotive production in China and China’s real price import of TSR, while China’s demand for TSR imports of non-Thailand influenced by amount of China’s TSR imports from non-Thailand in previous year, amount of automotive production in China and import tariff in China, and (3) world TSR real prices was influenced by world TSR real price in previous year, amount of exports supply of the world in previous year and amount of imports demand of the world, while real price TSR exports of Thailand was influenced by world TSR real price, amount total of TSR Thailand exports and USA fuel real price, while real price TSR import of China was influenced by world TSR real price ratio and real price TSR import of China in previous year. Historical simulation and forecasting simulation results show that increased production quantities of TSR policy in Thailand and abolition of import tax of TSR policy in China performed within TSR rubber trade between Thailand and China because it enabled to increase foreign exchange for Thailand's technical specified rubber exports.
Keyword: shortage, unstable prices, 2SLS, technical specified rubber, WTO