Open AccessDietary Substitution Effect of Fishmeal with Tunic Meal of Sea Squirt, Halocynthia roretzi , Drasche, on Growth and Soft Body Composition of Juvenile Abalone, Haliotis discus , Reeve 1846
Author(s) -
Choi Dong Gyui,
Kim June,
Yun Ahyeong,
Cho Sung Hwoan,
Jeong Hae Seung,
Lee Ki Wook,
Kim Hee Sung,
Kim Pil Youn,
Ha Min Su
Publication year - 2018
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/jwas.12537
Subject(s) - abalone , haliotis discus , biology , juvenile , zoology , fish meal , meal , composition (language) , haliotis , fishery , aquaculture , food science , ecology , fish <actinopterygii> , linguistics , philosophy
The dietary substitution effect of fishmeal (FM) with tunic meal of sea squirt (SS) on growth and body composition of juvenile abalone, Haliotis discus , was evaluated. A total of 1470 juvenile abalone were distributed into 21 70‐L plastic rectangular containers. Six experimental diets in triplicate were prepared, and 20% FM was included in the FM0 diet. The treatments consisted of 20, 40, 60, 80, and 100% of FM substituted with tunic meal of SS, referred to as the FM20, FM40, FM60, FM80, and FM100 diets, respectively. Undaria was also prepared to compare the effect of the formulated diets on performance of abalone. The experimental diets were fed to abalone once a day at a satiation level for 16 wk. Weight gain of abalone fed the FM0 diet was higher than that of abalone fed the FM100 diet and Undaria , but not different from that of abalone fed the FM80 diet. Crude protein, crude lipid, and ash contents of the soft body of abalone fed all formulated diets were higher than those of abalone fed the Undaria diet. In conclusion, FM up to 80% could be replaced with tunic meal of SS without retardation in growth of abalone. The best growth was obtained in abalone fed the FM20 diet.