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Effect of various sources of dietary additive on growth, body composition and serum chemistry of juvenile olive flounder ( P aralichthys olivaceus )
Author(s) -
Lee Jinwhan,
Jung WonGwan,
Cho Sung H,
Kim Dong S
Publication year - 2015
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.12388
Subject(s) - olive flounder , paralichthys , feed conversion ratio , protein efficiency ratio , biology , food science , composition (language) , weight gain , feed additive , carica , bamboo , zoology , botany , fish <actinopterygii> , body weight , broiler , fishery , endocrinology , linguistics , philosophy
Asia traditional herbal feed additives have often been shown to have beneficial effects on disease resistance, growth, feed conversion and protein conversion. There have been few studies on the use of these feed additives in olive flounder diets. The present study was designed to determine if there are benefits associated with the inclusion of any of these traditional herbal feed additives in olive flounder diets. One thousand two hundred sixty juvenile fish averaging 6.5 g were randomly distributed into 36, 180‐L flow‐through tanks. No additive was included into the control (Con) diet. The aqueous type of additives: 2.5% bamboo ( BB ), 0.25% P runus mume ( PM ), 2.5% A rtemisia capillaris ( AC ), 2.5% cinnamon ( CC ), 2.5% C irtus junos ( CJ ), 0.25% C udrania tricuspidata ( CT ) and 2.5% F icus carica ( FC ), and the powder type of additives: 1% H outtuynia cordata ( HC ), 1% safflower ( SF ) and 1% sea tangle ( ST ) were included into the experimental diets. Finally, 0.1% emulsifying oil ( EO ) was included into the experimental diet. Feed efficiency ratio ( FER ) of fish fed the BB , CT and SF diets was higher than that of fish fed the FC and HC diets. Protein efficiency ratio ( PER ) of fish fed the BB and SF diets was higher than that of fish fed the AC , FC and HC diets. None of serum criteria of fish was affected by any of dietary additives. Dietary additives did not affect weight gain and serum chemistry of olive flounder, but 2.5% bamboo extract and 1% safflower powder was effective to improve FER and PER .