Use Essential Oil And Power Of Antihelium Tsihanimposa To Eliminate The White Spot Syndrome Virus (WSSV) In Organic Shrimp Culture In Madagascar

Abstract

The organic culture needs special treatment like treatment of the culture water to rid the different types of bacteria. Nosy Lonjo seawater contains bacteria like Coliforms 770 Npp/100ml, Escherchia coli 700 Npp/100ml, Intestinal Enterococci 2433 Npp/100ml and some viruses with Temperature 26 °C, pH 9, Conductivity 550µS/cm, Turbidity 0.9 NTU. Culture water (Seawater from Nosy Lonjo) also contains dissolved oxygen 6mg/l, Salinity 50mg/l, TCA °f, NO3- 1.8mg/l, Hardness 5780 mg/l, Total iron 0mg /l, Ammonium 0mg/l, Sodium 7006 mg/l, Potassium 350 mg/l, Calcium 488 mb/l, Magnesium 1400mg/l, Aluminum 0mg/l, Copper 0.7 mg/l, Lead 0 mg/l and Chloride 348 mg/l. After treatment with zanthoxylum Tsihanimposa oil and powder, the bacteria have almost disappeared as coliform bacteria with a rate of 10 Npp/100ml much lower compared to the EU 250 standard, Escherchia coli 0 Npp/100ml compared to EU 500, Intestinal enterococci 100 Npp/100ml compared to EU 200. Concerning viruses like Vibrio alginolyticus 1Npp/100ml, Vibrio anguilarum 0 Npp/100ml, Vibrio harveyi 0 Npp/100ml, Vibrio parahaemolyticus 1 Npp/100ml, Vibrio vulnificus 0 Npp/100ml and Vbrio salmonica 0 Npp/100ml, the presence in organic culture is almost null. The oil and powder of zanthoxylum Tsihanimposa also affects Pseudomonas aeruginosa 0 Npp/100ml, Flavoctrrium 2 Npp/100ml and Moraxella 1 Npp/100ml. The treatment of WSSV with zanthoxylum Tsihanimposa is a special case in our study, it lasts 90 days. The test is done every 10 days, after 20 days of culture the shrimp mortality is zero until 90 days of culture and the rate WSSV or White Spot Syndrome Virus is 0Npp/100ml.