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Effects of dietary phospholipid level and fraction on the feed intake of non‐fish meal diet in yellowtail, Seriola quinqueradiata Temminck & Schlegel, 1845
Author(s) -
La Thao Xuan,
Ishikawa Manabu,
Tola Siriporn,
Fukada Haruhisa,
Masumoto Toshiro
Publication year - 2018
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.13488
Subject(s) - seriola quinqueradiata , biology , fish meal , meal , fish <actinopterygii> , food science , zoology , phospholipid , sardine , fishery , biochemistry , membrane
Three feeding studies were conducted to investigate whether dietary soybean lecithin ( SBL ) enhanced feed intake of non‐fish meal, SPC ‐based diet, in yellowtail, and also to clarify which fraction of phospholipid ( PL ) was effective to enhance feed intake. In experiments 1 and 2, fish were fed SBL level at 0%–5%, and it was revealed that the daily feeding rate ( DFR ) of fish was significantly higher for SBL 2% than for SBL 0%, while a further increase of SBL in the diet did not additionally increase the DFR . Moreover, the DFR of fish fed a diet without feeding stimulants ( FS ) was the lowest among the dietary treatments, indicating that the SBL does not have an effect of enhancing feed intake in yellowtail. In experiment 3, fish were fed a diet with several products containing PL at 2%. Phosphatidylcholine and phosphatidylinositol concentrations in these products positively correlated to the DFR of fish. This result revealed that these two fractions in the SBL are effective for enhancing feed intake of yellowtail when FS is present in the diet.