Lipid composition of Ruditapes philippinarum spat: Effect of ration and diet quality
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AuthorsFernández-Reiriz, M.ªJ. (María José); Labarta, U. (Uxío); Albentosa, M. (Marina); Pérez-Camacho, A. (Alejandro)
wheat germ diets
This study investigates the influence of the lipid composition of microalgal and commercial flour diets on the lipid classes and fatty acids of Ruditapes philippinarum spat. Aspects of the nutritional role of the diets and the feeding ration are discussed with regard to previously published spat growth data. Our results demonstrated that clams showed the best growth rates when fed with diets that supplied a larger quantity of lipids, further characterised by a high content of phospholipids and triacylglycerols. We observed a significant correlation between the amount of triacylglycerols (r = 0.929, p < 0.05) and phospholipids (r = 0.781, p < 0.05) supplied and spat growth. In addition, R. phillipinarum spat reached the highest percentages of triacylglycerols (about 12%) and the lowest percentages of phospholipids (about 60%) and sterols (about 4%) with these growth-promoting diets. Spat fed with the other diets and/or rations showed lower growth rates and significantly lower quantities ...