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Growth performance and the soft body composition of juvenile abalone, Haliotis discus, Reeve 1846, fed the extruded pellets substituting fish meal and macroalgae with tunic meal of sea squirt, Halocynthia roretzi

Authors
Yun, AhyeongJeong, Hae SeungLee, Ki WookAnsary, Most Waheda RahmanCho, Sung HwoanKim, Hee SungKim, Taeho
Issue Date
Jun-2020
Publisher
WILEY
Keywords
abalone (Haliotis discus); extruded pellet; fish meal; macroalgae; tunic meal of sea squirt (Halocynthia roretzi); Undaria pinnatifida
Citation
AQUACULTURE NUTRITION, v.26, no.3, pp 885 - 893
Pages
9
Indexed
SCIE
SCOPUS
Journal Title
AQUACULTURE NUTRITION
Volume
26
Number
3
Start Page
885
End Page
893
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/6590
DOI
10.1111/anu.13047
ISSN
1353-5773
1365-2095
Abstract
Growth performance and the soft body composition of juvenile abalone fed the extruded pellets (EPs) substituting fish meal (FM) and macroalgae (MA) with tunic meal of sea squirt (SS) was investigated. A total of 1,260 abalone were distributed into 18 containers. Six experimental diets were prepared in triplicate. Five diets were pelletized by an extruder pelleter. The 140 g/kg FM and 250 g/kg mixture of MA were included into the control (Con) diet. Five hundred and 1,000 g/kg of each FM and MA were substituted with an equal amount of tunic meal of SS, referred to as the FM50, FM0, MA50 and MA0 diets, respectively. Finally, dry Undaria pinnatifida was prepared. Weight gain and specific growth rate of abalone fed all EPs were greater than those fed U. pinnatifida. Weight gain of abalone fed MA50 and FM50 diets was greater than Con and FM0 diets, but not different from MA0 diet. Higher crude protein and lipid contents were observed in soft body of abalone fed all EPs compared to U. pinnatifida. In conclusion, FM and MA up to 500 and 1,000 g/kg, respectively, could be replaced with tunic meal of SS in EPs without retardation in growth of abalone.
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