Matching mineral requirements in trout

In fish, trace elements play an important role in cellular metabolism, formation of skeletal structures, maintenance of colloidal systems, regulation of acid-base equilibriums and other physiological functions. here we consider trace element bioavailability, particularly the role of organic selenium. In commercial salmonid diets considerable variation exists in the mineral content of feeds (Figure 1) with the red section indicating the National Research Council (NRC) dietary requirement estima