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Abstract
Five isonitrogenous, isocaloric diets containing 0, 8.95, 17.90, 26.85, or 35.8% double dry-extruded full-fat soybeans (FFSB) as a replacement for 0, 7, 14, 21, and 28% commercial solvent-extracted soybean meal (SBM) were fed to juvenile Penaeus vannamei to satiation six times per day for 70 days. The water stability of pellets tested at 4 and 8 hours were not significantly different (P < 0.05) different, although the diet with the highest level of FFSB had the lowest water stability consistently. Weight gains, survival, dry matter feed intake, feed conversion, and protein efficiency ratio were essentially the same for all diets. Whole body percentages of moisture, fat, crude protein, and ash were also similar for shrimp in all treatments. The results of this study indicate that, at the level tested, the nutritional value of double dry-extruded FFSB for shrimp is comparable to that of SBM made isocaloric with soybean oil.