Premium
Effects of dietary macroalgae meal and lipid source on growth performance and body wall fatty acid composition of sea cucumber Apostichopus japonicus
Author(s) -
Wen Bin,
Sun YongJun,
Gao QinFeng,
Dong ShuangLin,
Chen ZaiZhong,
Gao JianZhong
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.13508
Subject(s) - apostichopus japonicus , sea cucumber , biology , polyunsaturated fatty acid , food science , fish oil , fatty acid , composition (language) , fish meal , eicosapentaenoic acid , meal , zoology , botany , biochemistry , fish <actinopterygii> , fishery , ecology , linguistics , philosophy
Abstract A 70‐day experiment was conducted to examine the effects of different macroalgal meals and lipid sources on growth, body wall composition and fatty acid ( FA ) profile of sea cucumber Apostichopus japonicus . Two macroalgal meals including Sargassum muticum ( SM ) and Gracilaria lemaneiformis ( GL ) and two lipid sources including fish oil ( FO ) and vegetable oil ( VO ) were formulated into four diets, i.e., S. muticum and fish oil ( SF ), S. muticum and vegetable oil ( SV ), G. lemaneiformis and fish oil ( GF ) and G. lemaneiformis and vegetable oil ( GV ). The results showed that the specific growth rates ( SGR ) of A. japonicus fed diets containing SM were significantly higher than those fed diets containing GL . No significant differences in SGR between the FO ‐based and VO ‐based groups were observed. Similar results were observed in the body wall lipid content. Most body wall FA s changed to resemble the dietary FA proportions because of the dietary effect. Concentrations of 20:4 n ‐6 of the SF and GF groups were significantly lower than the SV and GV groups, while levels of 20:5 n ‐3 and 22:6 n ‐3 were significantly higher than the SV and GV groups. The n ‐3/ n ‐6 polyunsaturated fatty acids ( PUFA ) ratios of the SF and GF groups were significantly higher than the SV and GV groups. Moreover, the SF group had significantly higher 20:5 n ‐3 and 22:6 n ‐3 contents and n ‐3/ n ‐6 PUFA s ratio than the GF group. These findings reveal that the SF diet can show beneficial effects on both growth performance and body wall n ‐3 PUFA s content of A. japonicus .