Open AccessEffects of the Dietary Fermented Tuna By‐product Meal on Growth, Blood Parameters, Nonspecific Immune Response, and Disease Resistance in Juvenile Olive Flounder, Paralichthys olivaceus
Author(s) -
Oncul Fatma O.,
Aya Frolan A.,
Hamidoghli Ali,
Won Seonghun,
Lee Geon,
Han Kyoung R.,
Bai Sungchul C.
Publication year - 2019
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/jwas.12535
Subject(s) - paralichthys , olive flounder , biology , juvenile , feed conversion ratio , weight gain , edwardsiella tarda , fish meal , protein efficiency ratio , zoology , meal , food science , fishery , body weight , fish <actinopterygii> , endocrinology , ecology
This study evaluated the effects of dietary fermented tuna by‐product meal (FTBM) in juvenile olive flounder, Paralichthys olivaceus . Five diets were formulated to replace fishmeal (FM) with FTBM at 0% (FTBM 0 ), 12.5% (FTBM 12.5 ), 25.0% (FTBM 25 ), 37.5% (FTBM 37.5 ), or 50% (FTBM 50 ). After 8 wk, weight gain, specific growth rate, and feed efficiency of fish fed FTBM 0 and FTBM 12.5 diets were significantly higher than fish fed the other diets ( P < 0.05). Also, mean cumulative survival rates (%) of fish fed the FTBM 0 and FTBM 12.5 diets were significantly higher than those fed FTBM 50 diet at Day 9 postchallenge with Edwardsiella tarda ( P < 0.05). Protein efficiency ratio of fish fed FTBM 0 and FTBM 12.5 diets was significantly higher ( P < 0.05) than fish fed diets FTBM 37.5 and FTBM 50 . Broken‐line regression analysis of weight gain showed an optimal FM replacement level of 10.65% with FTBM. Therefore, the optimal dietary inclusion of FTBM in juvenile olive flounder diets could be greater than 10.65% but less than 12.5% without any adverse physiological effects on fish health.