Effect of different carotenoid sources and their dietary levels on red porgy (Pagrus pagrus) growth and skin colour

Whereas wild specimens exhibit a red pink silver colour, under captivity red porgy (Pagrus pagrus) skin turns dark grey, being directly associated with lower acceptance by the consumers and lower market value. This study was conducted to evaluate the effect of diet supplementation with two carotenoid sources, at two different concentrations, on growth and skin coloration. Fish of 44 g mean initial weight were fed the following diets: control...