The effect of the dietary substitution of fishmeal with tuna by-product meal on growth, body composition, plasma chemistry and amino acid profiles of juvenile Korean rockfish (Sebastes schlegeli)

Abstract

The effect of the substitution of fishmeal with tuna by-product meal (TBM) in the diet of Korean rockfish on growth, body composition, plasma chemistry and amino acid profiles was determined. Nine experimental diets were prepared. The control (Con) diet consisted of 550 g kg À1 fishmeal. The 10, 20, 30, 40, 60, 80 and 100 % fishmeal diets were substituted with tuna by-product meal (TBM), referred to as the TBM10, TBM20, TBM30, TBM40, TBM60, TBM80 and TBM100 diets, respectively. Finally, the fishmeal and soybean meal was completely replaced with TBM in the diet TBM100-S. There was no significant difference in weight gain and SGR of the fish that were fed the TBM40 and Con diets. The feed conversion ratio (FCR) of the fish that were fed the Con, TBM10, TBM20 and TBM30 diets was lower than that of the fish that were fed all of the other diets. The protein efficiency ratio (PER) of fish that were fed the TBM10, TBM20 and TBM300 diets was higher than that of fish that were fed the TBM40, TBM60, TBM80, TBM100 and TBM100-S diets. It can be concluded that the substitution of fishmeal with up to 40 and 30 % TBM in the diet of juvenile Korean rockfish could be made without exerting a detrimental effect on their growth (SGR) and feed utilization (FCR and PER), respectively.

Growth and Body Composition Effects of Tuna Byproduct Meal Substituted for Fish Meal in the Diet of Juvenile Abalone, Haliotis discus

“…In contrast to the results of this study, however, only 30 and 40% of fish meal could be replaced with TBM without a retardation in the growth of juvenile olive flounder (Kim et al ) and rockfish (Jeon et al in press), respectively. This difference could be explained by the fact that abalone is herbivorous (Thongrod et al ) and more effectively utilizes the soybean meal in TBM than do carnivorous fishes.…”

“…for 48 h and then dried. Our previous studies have revealed that up to 30 and 40% of fish meal could be replaced with TBM without a retardation in the growth of juvenile olive flounder, Paralichthys olivaceus , and rockfish, Sebastes schlegeli , respectively (Jeon et al in press; Kim et al ). Similarly, tuna muscle byproduct powder could replace 50% of fish meal protein without a reduction in growth performance of the olive flounder (Uyan et al ).…”

Substitution effect of Undaria pinnatifida with citrus ( Citrus unshiu , Marcovitch) peel by‐product in feed on the growth, body composition and air exposure stressor of juvenile abalone ( Haliotis discus , Reeve 1846)

“…The most important advantages of using fruit by‐products as abalone diet are to reduce the dependence of abalone on MA, which is expensive and limited in seasonal availability with low nutrition, and to eradicate cost of waste compilation, transportation and management programme. Similarly, some studies have been reported comparable growth performance of aquatic animals including abalone fed the diets substituting MA with food and plant by‐products (tuna by‐product, tunic meal of sea squirt, rice bran and white radish by‐product) for fish meal and MA (Choi et al, ; Jeon, Kim, Myung, & Cho, ; Lee et al, ; Lee, Kim, Choi, et al, ; Lee et al, ). The desirable effect of citrus peel on growth of land animals, such as rats (Lim, Lee, & Kim, ), broiler (Ebrahimi, Qotbi, Seidavi, & Bagar, ; Siyal et al, ) and rabbit (Ojabo, Adenkola, & Odaudu, ), has also been reported.…”

The Future of Aquatic Protein: Implications for Protein Sources in Aquaculture Diets

“…For example, white fish meal produced from byproducts contains 60%-67% crude protein, 7%-11% crude lipids, and 21%-23% ash, 18,34 and tuna fish meal produced from byproducts contains 57%-60% crude protein, 8%-14% fat, and 12%-21% ash. [35][36][37][38] The lower protein content and higher ash content in byproduct fish meals are not unexpected, as the nutrient composition differs between whole fish, fillets, and other parts of the body (viscera, heads, skin, bones, and blood). The different proportions of various byproducts that are used to produce fish meal will therefore also contribute to the nutrient variability of the fish meal made from byproducts.…”