Development of a docosahexaenoic acid (DHA)-rich yellowtail Seriola quinqueradiata using tuna by-product oil

Shinagawa, Junpei; Morino, Haruka; Masumoto, Toshiro; Fukada, Haruhisa

doi:10.1007/s12562-017-1097-x

Cited by 2 publications

(2 citation statements)

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“…DHA was higher in the liver of all dietary groups than in each diet, which indicated selective deposition of DHA in the liver. The DHA level in the liver of fish in the present study (approximately 30%) was high in comparison to our previous studies for yellowtail: 18.8% in control (Shinagawa et al 2017) and 8.5% in control (Fukada et al 2017). The high levels of DHA observed in the liver could be attributed to the smaller size of the fish in this study compared to those used in previous studies.…”

Section: Blood Chemical Analysescontrasting

confidence: 66%

“…In the red sea bream Pagrus major, increasing dietary DHA and/or EPA levels higher than the required levels improved growth and feed efficiency (Takeuchi et al 1990). Levels of DHA and/or n-3 LC-PUFA higher than the required level might improve growth performance in yellowtail as observed in a previous study (Shinagawa et al 2017). However, the highest growth performance was observed in the AM2 group that did not contain the highest DHA and n-3 LC-PUFA levels.…”

Section: Blood Chemical Analysessupporting

confidence: 52%

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Effects of complete replacement of fish oil with plant oil mixtures and algal meal on growth performance and fatty acid composition in juvenile yellowtail Seriola quinqueradiata

Fukada

Kitagima²,

Shinagawa

et al. 2019

Fish Sci

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Docosahexaenoic acid (DHA) is an essential fatty acid for marine carnivorous fish. Algal meal (AM), available as a new dietary DHA source, could completely replace dietary fish oil (FO). In this study, dietary FO was replaced with plant oil mixtures and AM in juvenile yellowtail Seriola quinqueradiata to investigate its effects on growth performance and fatty acid composition. The FO control diet was prepared with only pollack liver oil as the lipid source. For the non-FO diets, pollack liver oil was completely replaced with mixtures of canola oil and palm oil, with AM supplementation at 0% (AM0), 1% (AM1), 2% (AM2), 3% (AM3), and 4% (AM4). After completion of the 8-week feeding trial, the AM2 group showed significantly higher values for final body weight and feed efficiency than the AM0 group. No significant differences were observed in the other parameters of growth performance. Whole-body fatty acid composition reflected the dietary fatty acid composition in all dietary groups. These findings demonstrate that AM is useful as a DHA source in yellowtail aquaculture, thus contributing to a reduction in the use of FO in fish diets.

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Section: Blood Chemical Analysescontrasting

confidence: 66%

Section: Blood Chemical Analysessupporting

confidence: 52%