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KMID : 0613820090190010087
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Journal of Life Science
2009 Volume.19 No. 1 p.87 ~ p.93
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Effects of the Culture Broth of Lactic Acid Bacteria Cultured in Herb Extracts on Growth Promotion and Nonspecific Immune Responses of Aquacultured Fish
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Jhon Bong-Kun
Kim Man-Chul
Kim Young-Hoo
Heo Moon-Soo
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Abstract
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We have investigated the effects of the culture broth of lactic acid bacteria (LAB) cultured in herb extract on growth, hematological parameter, nonspecific immune responses and disease resistance of olive flounder (Paralichthys olivacells) and parrot fish (Oplegnathus fasciatus) for 12 weeks. Weight gain of olive flounder fed diet with mixture was not significant among the control group. But In parrot fish, was significantly higher 20g than control group. The feed efficiency of olive flounder were 25% higher in the experimental groups than in the control. There were no significant differences in feed efficiency among each group on parrot fish. Treatment of olive flounder contents of GOT and GPT in serum decreased after 8 weeks. But there were no significant differences in GLU and TP among each group. Also, there was no significant of NBT reduction. The activities of lysozyme were higher in experimental group of olive flounder than in the control after 8 weeks. On the other hand, activities of lysozyme were triple higher in the experimental group of parrot fish than in the control after 12 weeks. In the oliver flounder case, the survival rate (%) after an artificial challenge with CFU/ml of Vibrio anguillarum and Streptococcus iniae per fish, was 18% higher in the experimental groups than the control. The higher survival rate of parrot fish were 17% and 16% in the experimental groups than the control respectively.
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KEYWORD
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Lactic acid bacteria, herb extracts, non-specific immune, Paralichthys olivaceus, Oplegnathus fasciatus
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