Distillers dried grain can be used as a feed ingredient for the growth of freshwater snail ( S emisulcospira coreana ) and abalone ( H aliotis discus hannai )

Two feeding experiments were conducted to evaluate dietary distillers dried grain ( DDG ) as a feed ingredient that partially replaces soybean meal and wheat flour for the growth of juvenile freshwater snail ( S emisulcospira coreana ) and abalone ( H aliotis discus hannai ). Three experimental diets were formulated to contain 0 g kg −1 DDG ( DDG 0), 200 g kg −1 DDG from rice (diet DDG ‐R) and 200 g kg −1 DDG from rice and wheat flour (diet DDG ‐ RW ). In the first experiment, three replicate groups of the freshwater snails averaging 133.0 ± 2.48 mg were fed one of the experimental diets for 12 weeks. Weight gain of the juvenile freshwater snails was not affected by dietary DDG ( P  > 0.05). In the second experiment, three replicate groups of the juvenile abalones averaging 296.3 ± 1.73 mg were fed one of the three experimental diets for 22 weeks. Weight gain of the abalones was not affected by dietary DDG ( P  > 0.05). Proximate and amino acid compositions of the whole body in the freshwater snails and soft body in the abalones were not affected by dietary DDG ( P  > 0.05). The results of the two experiments indicated that DDG can be used as a suitable feed ingredient for partial replacement of soybean meal and wheat flour at a level of 200 g kg −1 in diets without any adverse effects on the growth performance of freshwater snail and juvenile abalone.