Effects of the Dietary Fermented Tuna By‐product Meal on Growth, Blood Parameters, Nonspecific Immune Response, and Disease Resistance in Juvenile Olive Flounder, Paralichthys olivaceus

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% (FTBM0), 12.5% (FTBM12.5), 25.0% (FTBM25), 37.5% (FTBM37.5), or 50% (FTBM50). After 8 wk, weight g...

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Published inJournal of the World Aquaculture Society Vol. 50; no. 1; pp. 65 - 77
Main Authors Oncul, Fatma O., Aya, Frolan A., Hamidoghli, Ali, Won, Seonghun, Lee, Geon, Han, Kyoung R., Bai, Sungchul C.
Format Journal Article
LanguageEnglish
Published Hoboken, USA Wiley Subscription Services, Inc 01.02.2019
John Wiley & Sons, Inc
Subjects
Body weight gain
Defence mechanisms
Diet
Disease resistance
Feed conversion efficiency
Feed efficiency
Fermentation
Fermented food
fermented tuna by‐product
Fish
Fish meal
Fishmeal
Growth rate
Immune response
Immune system
Immunity
Marine fishes
Paralichthys olivaceus
Physiological effects
Proteins
Regression analysis
Replacement level
Sulfur
Survival
Weight gain
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Summary: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% (FTBM0), 12.5% (FTBM12.5), 25.0% (FTBM25), 37.5% (FTBM37.5), or 50% (FTBM50). After 8 wk, weight gain, specific growth rate, and feed efficiency of fish fed FTBM0 and FTBM12.5 diets were significantly higher than fish fed the other diets (P < 0.05). Also, mean cumulative survival rates (%) of fish fed the FTBM0 and FTBM12.5 diets were significantly higher than those fed FTBM50 diet at Day 9 postchallenge with Edwardsiella tarda (P < 0.05). Protein efficiency ratio of fish fed FTBM0 and FTBM12.5 diets was significantly higher (P < 0.05) than fish fed diets FTBM37.5 and FTBM50. 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.
ISSN:0893-8849
1749-7345
DOI:10.1111/jwas.12535