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Dietary medicinal herbs and enzyme treated fish meal improve stress resistances and growth performance at early juvenile stage of red sea bream P agrus major
Author(s) -
Takaoka Osamu,
Ji SeungCheol,
Ishimaru Katsuya,
Lee SiWoo,
Jeong GwanSik,
Biswas Amal,
Takii Kenji
Publication year - 2016
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.12506
Subject(s) - pagrus major , biology , vibrio anguillarum , juvenile , fish meal , meal , zoology , herb , food science , fish <actinopterygii> , fishery , traditional medicine , medicinal herbs , ecology , vibrio , medicine , bacteria , genetics
Red sea bream P agrus major ( RSB ) weighing 0.09 g were fed on test diets, composed of 65% fish meal supplemented with 0.49% C rataegi fructus (Cf) and a mixture of M assa medicata , Cf, A rtemisia capillaries and C nidium officinale ( HM ) or a control diet without herbs, in trial 1. After air exposure and anaesthesia treatment, higher stress tolerances were obtained in herbal groups than control group. Moreover, after challenge test with V ibrio anguillarum , mortalities of the herbal groups were lower than the control group. There was no significant difference in growth performance among the treatments. Feed efficiency ( FE ) of the test groups was 124–141%. In trial 2, RSB weighing 0.11 g were fed on diets composed of 35% fish meal and 30% enzyme treated fish meal ( EFM ) with the same herbal treatments as trial 1. The herbal groups revealed higher final body weight and specific growth rate (SGR) and lower daily feed intake than those of the control group. The FE of test groups was 172–203%. These results indicate that the dietary herbs supplementation acts not only as recovery enhancer for some rearing stresses but also as growth enhancer, which is accelerated with dietary EFM in the early juvenile stage of red sea bream.