EFFECT OF ASCORBIC ACID ENRICHMENT BY IMMERSION OF RAINBOW TROUT Oncorhynchus mykiss EGGS AND EMBRYOS

Ascorbic acid is an essential micronutrient in the diet of teleost fish, including salmonids, which do not have gulonolactone oxidase activity (Moreau and Dabrowski, 2001). The ascorbic acid requirement for different teleost fish has been well documented (Dabrowski, 2001). This requirement may also vary in fish ontogeny, for instance larval metamorphosis or gonad maturation (Ciereszko and Dabrowski, 1995). Determination of factors that affect egg and larval quality remains difficult as good criteria are lacking (Kjorsvik e