Phosphorus digestibility and retention in sea bream

Diets for fish are changing in this sense that less fish meal is used, being replaced by vegetal protein sources. Contrary to fish meal vegetal protein contains only low levels of phosphorus, therefore, fish diets nowadays have to be supplemented with inorganic feed phosphates. Inorganic feed phosphates contain both a high level of total and digestible P. The digestibility of different phosphates is however not the same, as it appears that digestibility greatly depends on product solubility. Th