Influence of farming technology on bioaccumulation of calcium, magnesium and sodium in muscle tissue of rainbow trout (Oncorhynchus mykiss Walbaum) / Wpływ technologii chowu na biokumulację wapnia, magnezu i sodu w tkance mięśniowej pstrąga tęczowego (Oncorhynchus mykiss Walbaum)

Poland is one of the countries with limited water resources where water saving is recommended e.g. by improving aquaculture methods to use less water. The aim of the study was to determine the influence of water quality and aquaculture technology on bioaccumulation of calcium, magnesium and sodium in muscle tissue of rainbow trout. The study was performed in spring and autumn 2011 in two trout fish farms using different farming technologies: one with flow-through system and the other with water recirculation system. The farming technology had significant influence on magnesium and sodium in waste waters but did not affect the content of the minerals in muscle tissue of rainbow trout