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Annual variation in the biochemical composition of newly hatched larvae of Maja brachydactyla in captivity
Estévez García, Alicia; Simeó, Carles G.; Rotllant Estelrich, Guiomar;  Andrés Roig, Mireia
IRTA. Recerca i Tecnologia Agroalimentàries
Quality of newly hatched larvae (NHL) of Maja brachydactyla in captivity has been characterized throughout the year to evaluate their availability for mass production. Spawning took place every month and NHL were collected and analyzed to estimate individual dry weight (DW) and proximate biochemical composition (protein, carbohydrate and lipids). Lipid class, fatty acid composition, amino acid profile, mineral and vitamins A, E and C contents were analyzed seasonally. NHL obtained throughout the year are a potential source for aquaculture purposes, since the increment in the relative protein and lipid (especially phospholipids and n-3 PUFA) content might compensate the decrease in DW of larvae hatched from broodstock kept during one year in captivity. However, the decrease in vitamins A and E as well as in certain essential amino acids (Lys, Val, and His) and trace elements (Cu and Fe) of NHL at the end of the year might be indicative of a nutritional deficiency in broodstock diets.
63 - Agricultura. Silvicultura. Zootècnia. Caça. Pesca
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