Publications by authors named "Hyeongwoo Je"
Article Synopsis
- This study explored the effects of GABA supplementation in the diets of juvenile olive flounders, focusing on growth, serum biochemistry, innate immunity, and disease resistance under varying stocking densities (normal vs high density).
- Four diets were tested: a control and three experimental diets with increasing levels of GABA (150, 200, and 250 mg/kg), with fish weights measured after 8 weeks of feeding.
- While GABA supplementation did not significantly affect weight gain or feed efficiency, it did increase blood GABA levels in a dose-dependent manner and showed improved immune response, suggesting potential benefits of GABA in fish health under stress.
We performed an 8-week feeding trial to evaluate dietary soluble extract hydrolysates from fishery by-products, such as shrimp soluble extract (SSE) with or without inosine monophosphate (IMP), tilapia soluble extract (TSE) and squid soluble extract (SQSE), in juvenile Nile tilapia. A diet without feed additives was used as the control diet (CON); and five other experimental diets were formulated with 2% soluble extracts consisting of 100% SSE, 98% SSE + 2% IMP (SSEP), 96% SSE + 4% IMP (SSEP), 100% SQSE and 100% TSE. The diets were fed to 4.
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- The study explored the use of tuna byproducts as a substitute for fish-meal in feeding Nile tilapia over 84 weeks, measuring cadmium and mercury levels in various fish tissues and stages.
- The findings showed that the tuna byproducts maintain cadmium and mercury levels within safe limits for tilapia, suggesting they could be a cost-effective protein source in aqua feed.
- However, a government recall occurred for flounder due to high mercury levels from consuming the same tuna byproduct feed, indicating a need for further research on the safety and efficacy of tuna byproducts across different fish species.