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치어기 참다랑어(Thunnus thynnus) 사료 내 주단백질원료로써 효소처리어분의 효과
지승철(Seung-Cheol JI),신재형(Jaehyeong SHIN),김대중(Dae-Jung KIM),양상근(Sang-Geun YANG),정민환(Minhwan JEONG),김정현(Jung-Hyun KIM),이경준(Kyeong-Jun LEE) 한국수산해양교육학회 2019 水産海洋敎育硏究 Vol.31 No.3
This study was conducted to estimate effects of a dietary enzyme treated fish meal (EFM) as a major protein source on growth, feed utilization and digestive enzyme activities of bluefin tuna Thunnus thynnus. In the first feeding trial (trial 1), total one hundred juvenile Atlantic bluefin tuna (body weight: 0.68g) were randomly stocked into two concrete tanks (69 tones) and fed two experimental diets for 15 days. The two diets were EFM-based diet and frozen sand lance (SL) as a raw fish feed. Weight gain was not significantly different between tuna fed EFM and SL. In the second feeding trial (trial 2), total thirty juvenile bluefin tuna (initial body weight 10.7g) were randomly stocked into the same experimental tanks and fed two diets for 14 days. The diets were EFM based diet and sardine fish meal based diet (FM). Weight gain was higher in fish fed EFM than that of fish fed FM. Feed intake was higher in fish fed FM than that of fish fed EFM. This study indicates that the dietary EFM could be an excellent protein source that can be used for Atlantic bluefin tuna feeds.