DETERMINATION OF THE OPTIMUM DIETARY ORGANIC IRON LEVELS COMPARED TO FERROUS IRON IN PRACTICAL DIETS FOR THE GILTHEAD SEA BREAM (SPARUS A URA TA).

摘要

Iron (Fe) is one of the most important trace minerals in fish. Sea bream suffers mortalities from a gill parasite (microcotilae) which causes aneamia and substantial mortality. Preliminary industrial results show a significant reduction of mortality following the incorporation of organic iron in the diet due to improvement offish blood parameters (Nengas pers. com. 2007). The key factors influencing iron absorption are the proportion of organic and inorganic components of the diet. Generally the organic forms of iron can be absorbed better comparing to the inorganic forms (Watanabe et al., 1997).