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Growth, Nutrient Deposition, Plasma Metabolites, and Innate Immunity Are Associated with Feeding Rate in Juvenile Starry Flounder (Platichthys stellatus)

Jeong-Hyeon Cho,Ali Hamidoghli,Sang-woo Hur,Bong-Joo Lee,Seunghan Lee,Kang-Woong Kim,Seunghyung Lee

Published 2024 in Animals

ABSTRACT

Simple Summary Starry flounder (Platichthys stellatus), a marine flatfish, is a key species in marine aquaculture due to its high market price and tolerance to a wide range of salinities; however, limited information on optimal feeding in this species has hindered efforts to improve its aquaculture productivity. This study used eight feeding rates, ranging from 0.4% to 3.2% body weight per day, over a 10-week period, to determine optimal feeding rate (OFR) in starry flounder. The results of the regression analysis showed that feeding rates between 1.6% and 2.4% body weight per day optimized growth, nutrient deposition, and immune function. The OFR for growth was determined to be 2.4%, while the OFR for enhancing innate immunity was estimated at 1.7%. These findings suggest that adjusting feeding rates is essential for improving productivity and immune response in starry flounder aquaculture.

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