Effects of Replacing Fish Meal with Soybean Meal in Diets for Red Drum Sciaenops ocellatus and Potential for Palatability Enhancement

Abstract

Two 8‐wk feeding trials were conducted with juvenile red drum to determine the maximum levels of soybean meal that may replace fish meal in diets containing 38% crude protein, without reducing weight gain. In the first experiment, fish fed diets containing up to 90% of the protein from soybean meal gained as much weight as fish fed a diet with 100% of protein from fish meal, but fish fed the diet with 100% of its protein from soybean meal gained significantly (P < 0.05) less. Supplementation of glycine and fish solubles individually at 2% (as‐fed basis) in diets containing 90% of their protein from soybean meal tended to increase weight gain of fish compared to those fed a similar diet without supplementation. Similar results were obtained in the second experiment, as fish fed diets containing 90% of their protein from soybean meal gained as much weight as fish fed a diet with 100% of its protein from fish meal. Fish fed diets with 95% and 100% of their protein from soybean meal gained significantly less weight than those fed the diet with all of its protein from fish meal. Supplementation of glycine at 2% in the diet containing 95% of its protein from soybean meal significantly improved weight gain of fish relative to those fed a similar unsupplemented diet. Supplementation of fish solubles at 5% of diet on a dry‐matter basis provided a nonsignificant increase in weight gain compared to that of fish fed a similar unsupplemented diet. In both experiments there was greater observed consumption of the soybean‐meal‐based diets than diets with all of their protein from fish meal. A minimum of 10% of protein from fish meal appears necessary in practical diets containing most of their protein from soybean meal to prevent impaired growth and feed efficiency of red drum.

Replacement of fish meal by protein soybean concentrate in practical diets for Pacific white shrimp

“…The feed intake of diets with high levels of protein replacement was lower in this study ( Figure 1B), which is likely to have contributed to the reduction in shrimp growth. Diets formulated with high levels of soybean-derived ingredients may present palatability problems (McGoogan and Gatlin 1997;Nunes et al, 2006). The removal of specific carbohydrates that occurs in the processing of soybean protein concentrate may reduce palatability, which is frequently reported when vegetable protein sources are used for aquatic species (Forster et al, 2002).…”

Evaluation of dietary soybean meal as fish meal replacer for juvenile whiteleg shrimp, Litopenaeus vannamei reared in biofloc system

“…For this reason, many studies have aimed to replace or reduce FM inclusion in diets by less expensive alternative protein sources, such as algae (Kiron et al 2012), bacteria (Aas et al 2006), plants (Gatlin et al 2007), invertebrates (Barrows and Frost 2014) and by-products (Fowler 1991). Meanwhile, soybean meal (SBM) is known to be one of the most successful replacers of FM, because of its favorable protein content and amino acid profile (McGoogan and Gatlin 1997;Kikuchi 1999), less expensive price than FM and availability (Hardy 2006). However, one of the potential problems associated with the use of SBM is the deficient levels of indispensable amino acids (viz.…”

Growth responses on major replacement of animal protein with plant protein and graded levels of dietary supplement amino sugar, glucosamine in threatened Magur (Clarias batrachus, Linnaeus, 1758) fry

“…Soybean products as dietary protein source has been reported to affect the growth and feed utilization of many fish species including channel catfish [46,47], tilapia [24,48], rainbow trout [49,66,68,69], red drum [67,70], seabream [71], Asian catfish [27], cobia [72] and cuneate drum [73]. Amongst the animal proteins, fish meal, meat-meal, goat liver, fish and poultry offal's used as fish diet in case of catfishes particularly in C. batrachus, fish meal has always been considered to perform better in terms of survival, growth and general well-being [74,75,76,77].…”