Rearing Milkfish (Chanos chanos) in Cadmium and Lead Contaminated Pond and its Effect on Alteration of Gill, Liver and Kidney

This study was conducted to determine alteration of milkfish (Chanos chanos) organs (gills, liver and kidney) cultured in cadmium (Cd) and lead (Pb) contaminated ponds. The method used in this research was descriptive. Samples for research were obtained from Patuguran, Rejoso District, Pasuruan. The main parameters were the damage of the gills, liver and kidney of milkfish. Data were analyzed by analysis of variance (ANOVA), continued with least significant difference (LSD) and regression analysis. The result indicated that the heavy metals were present in water and sediment. Their concentrations were Pb 0.49 ppm and Cd 0.50 ppm, for water and sediment, respectively. The observation on organ histopathology revealed that gills experienced fusion, hyperplasia and necrosis. The liver showed cells degeneration, congestion and necrosis. Kidney experienced atrophy, cloudy swelling and glomerular hyalinization. The degree of organ damage was affected by length of rearing time. This research indicated that cadmium and lead polluted the fishpond in Rejoso District, Pasuruan and affected the organs of milkfish.