Dietary replacement of fish meal by soy products (soybean meal and isolated soy protein) in silvery-black porgy juveniles (Sparidentex hasta)

A two month feeding trial was conducted in silvery-black porgy (Sparidentex hasta) juveniles (initial mean body weight, 16.7 g) to determine the amount of soy products (SP) that could replace fishmeal (FM) in formulated diets without reducing growth performance. Six isoproteic (ca. 50%) and isoenergetic (ca. 22.4 MJ kg− 1) diets were formulated in which 15% (SP15), 30% (SP30), 45% (SP45), 60% (SP60) and 75% (SP75) of FM was replaced by SP,...