Change of hepatopancreas conditions in intensive shrimp aquaculture (Litopenaeus vannamei) at Mayangan Village, Legon Kulon District West Java

Abstract

The study of hepatopancreas purpose to monitor changes in the health condition of shrimp, which is hepatopancreas is a vital organ of metabolism and digestive system. This study was conducted in intensive shrimp ponds in Mayangan Village, Legon Kulon for 82 days. Sampling was carried out every 10 days. Hepatopancreas preparation was conducted by taking 30-50 mg with adding 0.1-0.2 ml of immersion liquid and observing used a microscope at 40x magnification. The parameters of hepatopancreas observed such as microphili, lipids, wrinkles, and necrosis. After monitoring the microphili in the Day of Culture (DOC) 1-40, the average score range shows that the culture shrimp is 90-100% healthy. in DOC 43 until the last sampling has decreased by 40-0% which is assumed to be the effect of a White Feces Disease (WFD). The lipid and wrinkle in DOC 1-40 sampling showed that the average range shrimp culture was 90-100% healthy. While in DOC-43 sampling until the last of lipid and wrinkle sampling decreased by 60-0%. Hepatopancreas necrosis in DOC 1-31 sampling does not exceed from 20%, while DOC-40 sampling until the last of necrosis sampling continues to increase to 100% assumed by WFD and WSSV (White Spot Syndrome Virus).