Seabass juveniles fed diets in which solvent-extracted SBM replaced 37.5% of fish
meal protein had identical survival and did not show significantly lower growth and feed
performance than fish on the control fish meal diet. This is in agreement with results
reported for rainbow trout and channel catfish. Growth differences were not significant
when 9% fish meal in rainbow trout fingerling diet as 25% replacement of fish mealŽ .
was replaced by 13% soybean meal Dabrowski et al., 1989 . The growth rate, however
was reduced significantly when 50% of the fish meal was replaced by soybean meal
Dabrowski et al., 1989; Alexis, 1990 . Pongmaneerat and Watanabe 1993 succeeded
in utilizing 30% SBM as a replacement of fish meal in an extruded high energy diet for
small rainbow trout of 5 g initial weight. Liebowitz 1981 found that when energy and
phosphorus requirements were met and when fish were fed to satiation, soybean meal
could replace most of the fish meal in practical channel catfish diets. Robinson and Li
Ž .1994 also indicated that soybean meal could be used to completely replace fish meal in
feeds for channel catfish reared in earthen ponds and fed daily to satiation.